Trailblazer Fan Clutch Symptoms

We make tough jobs easy with the O'Reilly Auto Parts loaner tool program. Ninety percent is considered high fan speed. One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. 2003 trailblazervery loud noise when running and alot worse when using the air-conditionerthe fan clutch has been replaced twice and a software update completed by the dealer, everything checks ok on their computer. to correct the failure i had to incur the $724. How do you know if your fan clutch is bad on a 2002 chevy trailblazer 4wd - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. When a fan clutch goes bad there can be is a loud roar. 2L, Automatic Dual Zone Climate Control, all stock. The hall effect sensor returns a signal pulse through the speed signal circuit in response to the reluctor track, which is located inside the fan clutch. Now have you heard of anything in this area. The electronic fan clutch in the above vehicles experiences almost a 100% failure rate. Other Cooling Systems Problems Affecting Fan Clutch Operation ˜ Plugged radiator (inside or outside) can delay or eliminate fan clutch engagement. Some symptoms include ticking or other noises from the fan clutch area. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. com is a product authorized by or in any way connected with any vehicle manufacturers displayed on this page. The fan clutch is responsible for controlling the operation of the cooling fans. The fan can be wiggled when the engine is off and does not run smooth. Failing fan clutch noise. Order Timing Cover for your 2002 Chevrolet Trailblazer and pick it up in store—make your purchase, find a store near you, and get directions. Ninety percent is considered high fan speed. I own 2005 trailblazer, heat goes up at low speed or climbing hills in hotter weather, could a sensor in fan clutch be gad? Thermostat has been replaced and is not losing coolant. The hall effect sensor returns a signal pulse through the speed signal circuit in response to the reluctor track, which is located inside the fan clutch. Symptoms of a Bad or Failing Fan Clutch 1. Several symptoms may point to a. An easier way to understand might be to consider two desk fans. P1481 Faulty Fan Clutch Assembly means a problem in Fan Clutch Assembly harness, which may have resulted from a poor electrical connection circuit. There are three 13mm headed bolts holding it on, they go up through the crossmember and bolt to the bottom of the bracket that is holding the air pump on. The Fan Clutch allows the fan to operate at lower speeds and effectively detach at higher speeds when the vehicle is moving and air movement due to velocity aids to cool the engine. One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. The fan clutch is designed to improve the vehicle’s cooling system efficiency while reducing the load on the engine and loss of energy caused by the fan itself. 1,543 problems have been reported for the 2006 Chevrolet Trailblazer. 2L and found that the Fan Clutch would be bad or the Motor Mounts "Collapsing or Getting Hard". The fan clutch is a thermostatic control that operates the radiator fan independent of engine speed. 2004 Chevrolet TrailBlazer Engine Problems. 0L engine is not hard to do. All gears seems to work. Automotive Recalls and Technical Service Bulletins for 2003 Chevy Truck TrailBlazer 2WD L6-4. The only thing I could think of was the clutch throw-out bearing, although typically, a release bearing gets noisy when it’s depressed, not the other way. Other causes include using the incorrect thickness (type) of fluid and the clutch linkage or shift cables needing adjustment. If you encounter Electronic Fan clutch issues on Rainier, Trailblazer, S10, Isuzu Ascender, Oldmobile Bravada, Saab 9-7X, and S15 GMC Envoy, read this. The vehicle was not repaired. To explain why, I'll go into a very brief and non-technical description of how the thermal fan clutch works (after all, we don't plan on reverse engineering the damn thing):. OE clutch is an AC Delco 15-4684 thermostatic control, reverse rotation, with A. Coniam says other symptoms such as rattling or poor air flow from the vents can help indicate the difference between a major repair like an A/C compressor, or a minor one like a bad blower fan. Symptoms Of A BAD Thermal Fan Clutch. Trailblazer reduce hp with bad clutch fan How to Replace Electric Fan Clutch 02-07 GMC Envoy Step by Step Chevy Trailblazer 4. I've replaced the fan clutch twice and the water pump once. Although the T900 and T2100 Series cooling system has ample cooling capacity, engine overheating remains possible. The hall effect sensor returns a signal pulse through the speed signal circuit in response to the reluctor track, which is located inside the fan clutch. 02 envoy, 6 cyl, loud wooshing noise when engine is cold. The fan clutch is responsible for pushing radiator fluid through the water pump, which keeps the engine cool. Problems with a blower motor resistor are common in many cars. Symptoms: Slight ticking from engine compartment, replicates lifter noise at first. Com 13560+ Best Fan Thestylishnomad. I had thought these were symptoms of the fan clutch being bad. Our 2003 trailblazer apparently had a bad fan clutch, it desenigrated and too out the hood liner, punctured the washer fluid tank, the belt, water pump and the shroud. Welcome to AF, not GM's issue here, but a dealer that is gun shy to attempt a repair, we need the code and more symptoms, the fan clutch can be an issue here, very common, or a sensor issue that engages the clutch on high and reduces power to save the engine. Get the best deals on Cooling Fans & Kits for Chevrolet Trailblazer when you shop the largest online selection at eBay. Just read in another forum of someone working on a Honda car and basically did the same thing as me and was asking what to do. As I continued holding the fan the engine got hotter and I could feel the fan surge increasing as I assume the clutch engagement pulse percentage was increasing. As the clutch disc pulls in towards the pulley, the pulley provides the rotating power to operate the compressor. That's only after installing: new water pump, radiator, fan, fan clutch, fan cover including labour. I tried pulling the HVACB and HVAC1 fuses. Not wanting to get it too hot, I let go and the fan sped up significantly. Page 2 of 4: Quickly Checking for a Blown Head Gasket. We do not turn on the second fan, but place it facing the first. Chevrolet Trailblazer Fan Clutch Replacement costs between $461 and $623 on average. A fan clutch is the assembly that your engine cooling fan rides on and that tells the fan when to turn on and off. Common problems of the 2006 Chevrolet Trailblazer. If during operation, the PCM detects a loss of the cooling fan speed signal, DTC P0526 will set. 2006 GMC Envoy XL. In this video we'll be showing you how to replace the fan or the fan clutch on this 2002 GMC Yukon. If the fan noise decreases during this step, then there is an electrical malfunction. Free Same Day Store Pickup. The second time was about three weeks ago. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. Fan Clutch: Know Your Options. I checked the wires that plugs into the fan clutch and I am only getting one out of five that works. It is a thermostatically controlled device that when. The Engine Control Module (ECM) has detected an improper circuit condition on the cooling fan clutch control circuit P1482 CHEVROLET Possible Symptoms Engine Light ON (or Service Engine Soon Warning Light). I have not heard the fan clutch "howling/spinning" on a hot day when taking off from a stand still. We took it to Autozone who stated the code indicated the fan is rotating too fast. Product meets or exceeds OE quality. Water Pump and Fan Clutch share the same shaft. When AC is off for when the clutch is not engaged - no noise at all… I have been getting alot of different answers as to what it could be and it is very confusing… to me - it sounds like a clutch issue and I have seen videos on how to take apart and see if it is a bearing or bad clutch. Continuous excessive fan noise is due to a mechanical failure. Tools you'll need are pretty basic, eight, 10 and 13-millimeter sockets and ratchet, a flat-blade screwdriver, a large adjustable wrench and a hammer. The water pump has gone out again and I still have the roaring and ticking from the fan clutch. READING POSTS ON MESSAGE BOARDS I HAVE NOTICED THAT THIS PROBLEM SEEMS TO BE A TREND AND THAT IS THE REASON I HAVE MADE THIS. That's only after installing: new water pump, radiator, fan, fan clutch, fan cover including labour. You can absolutely replace the fan clutch on your 2003 Trailblazer yourself. When the solenoid in the fan clutch is energized, it opens the spring loaded valve and allows fluid to flow from the storage chamber to the fluid coupling of the cooling fan clutch, increasing the fan speed. When this happened, the customer said that the Electronic Throttle Control, ABS, Traction Control, and sometimes the 4WD lights would come on. Coniam says other symptoms such as rattling or poor air flow from the vents can help indicate the difference between a major repair like an A/C compressor, or a minor one like a bad blower fan. Is there a - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. Top 10 Causes of a Rough Idle 1. The source of the problem could also be the vehicle’s computer system. The second time was about three weeks ago. Disconnect the cooling fan clutch connector. #04-01-38-019A - (Jun 7, 2005) Intermittent Slow to Cool HVAC Performance Concerns in High Ambient Temperatures and/or High Humidity Conditions After Start Up, Especially at Low Engine. On our website you can find and buy first-rate replacement radiators, fuel tanks, evaporator cores, intercoolers, and more top-quality Spectra Premium products. If the fan does not come on, further diagnosis of the fans electrical system will be necessary. If you're mechanically inclined (It's a huge PITA), you can remove the fan and clutch and run the engine briefly to see if the noise has been eliminated. com FREE DELIVERY possible on eligible purchases. Watch this video to learn how to fix a leaking or broken water pump. This is for my 2004 Chevy Trailblazer LS. The contact owns a 2003 Chevrolet Trailblazer. Might want to take a peak there and see if they're rotten. Through research online, the ticking sound is directly related to the fan clutch failure many gm Trailblazer and envoy owners have experienced. Bought new fan clutch had it installed and the same issue, fan clutch remains engaged on. GMC Envoy fan clutch replacement cost is anywhere between $100. SOURCE: HAVE A 2005 CHEVY TRAILBLAZER WITH P2432 CODE ? Yhea it's under the truck on drivers side bolted to the transmisson crossmember. 2002 Chevrolet Trailblazer Engine and Engine Cooling Technical Service Bulletins (TSBs). First, address the tires and tire balance. Basic Causes of a Misfire Condition. Intermittent Bad Ignition Switch Causes Low Power and No Blower Motor. Once engine speed is above 2500 rpm the fan must disengage because the sound fades away. The clutch in this repair was a defective clutch and we were willing to cause damage to the clutch since our plans were to install a new clutch. How to Test a Fan Clutch. ˜ Partially opened thermostat does not allow full coolant flow to the radiator. This list is merely a guide to the possible solutions. The fan clutch is designed to improve the vehicle's cooling system efficiency while reducing the load on the engine and loss of energy caused by the fan itself. If testing proves that your heater core is defective, replace it with this Spectra Premium heater core designed to ensure OE fit, form, and function. Find 2006 Chevrolet TrailBlazer recalls information, reported by the NHTSA, and we will help you find a nearby service center where you can get your car fixed. Express Auto Inspections says: While modern vehicles use a fuel injector system to burn gas, many older cars use a carburetor to process fuel. Fan Clutch Problems []. If it is a fan clutch, and you have mechanical aptitude, change it. To repair the issue, you need to ensure the fan clutch is properly situated, lubricated and intact. Kendall Jenner jetted around Beverly Hills Sunday in a black Ferrari while wearing athletic leggings and a tank top. Call an independent repair shop in your area that specialize n Chevy and get a quote, get it properly checked out before jumping to conclusions that the problem. The Advance Auto Parts core charge presented to you online today with your item is representative of the most common core charge. The fan clutch is what controls the turning of the fan which is activated by a thermostat. The parts and labor required for this service are. Replied by coffee412 on topic Over Charged Air Conditioning Now, I can see this is going to turn into a big discussion on what freon. The EV clutch is PCM-controlled, so it’s ON only when needed and its speed is infinitely variable. Shop Weldfabulous for Miller Electric Replacement and Repair Parts. To explain why, I'll go into a very brief and non-technical description of how the thermal fan clutch works (after all, we don't plan on reverse engineering the damn thing):. 0L engine is not hard to do. You can absolutely replace the fan clutch on your 2003 Trailblazer yourself. upon investigating this issue i found literally thousands of complaints on the internet regarding the chevrolet trailblazer and its premature fan clutch failures. A fan clutch is a thermostatic engine cooling fan that can freewheel at low temperatures when cooling is not needed, allowing the engine to warm up faster, relieving unnecessary load on the engine. So start your diagnosis by determining if the compressor clutch works. Fan Clutch X473XZ for Trailblazer EXT SSR 2005 2004 2003 2002 2006 2007 2008 (Fits: Trailblazer) IMPORTANT --- Review Fitment Notes to Ensure Proper Fit $172. no problem with cooling system, the dealership determined the clutch fan was going out. The cooling fan clutch may fail causing excessive fan noise and/or the Check Engine Light to illuminate. 2002-09 Chevy Trailblazer Electric Fan Clutch. - The A/C clutch requested. The clutch disc is splined to the compressor shaft. the fan clutches are very common to be bad, get an AC Delco or a dealer fan clutch, Aftermarket ones do not work correctly. If your hear "ticking" and have to use WD40. I was told to make the air gap between the clutch and the pulley assembly between 20-30 thousands. Symptoms: Slight ticking from engine compartment, replicates lifter noise at first. Other Cooling Systems Problems Affecting Fan Clutch Operation ˜ Plugged radiator (inside or outside) can delay or eliminate fan clutch engagement. There is a thread titled "Fan Clutch 101" you can find with an advanced search that goes into all the gory details. A quick summary of all that was done is: pcm update, clutch fan, cam sensor, oil change, fuel filter, spark plugs and a new throttle body. GM has issued a service bulletin to address a P0526 Cooling fan speed sensor circuit trouble code on the following vehicles: 2002-04 Olds Bravadas. The parts and labor required for this service are. The fan clutch is a thermostatic control that operates the radiator fan independent of engine speed. All manufacturer names, symbols, and descriptions, used in our images and text are used solely for identification purposes only. The first sign of a fan clutch stuck in the permanently engaged position is a fan that never shuts off. The alternator is a key component in your car's electrical system, turning the energy from the crankshaft into useful electricity to power your vehicle's electrical systems and to help the battery recharge. No, a bad fan clutch, as per the original, causes overheat at speed, and works fine at rest. Cause This condition may be caused by the electro-viscous fan clutch control function of the Powertrain Control Module (PCM) attempting to keep the fan speed between 300–600 revolutions per minute (RPM). By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. If the fan clutch seizes, it remains engaged all the time, cooling off the engine too much. Remove the air cleaner assembly from the engine compartment. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc. If you are experiencing any of the following problems with your car's power steering, you should check your power steering fluid, it may simply be low! It's easy to add power steering fluid, too. You may be able to find the general area with the engine running and then shut it off, remove the key and try to wobble parts with your gloved hands. I had it and it sounds like a harrier taking off. We hope it helps. There was a TSB issued two years ago about that. Dealer diagnosed as water pump bearing and wanted $475 to replace the water pump. You can absolutely replace the fan clutch on your 2003 Trailblazer yourself. A fan clutch is featured on rear wheel drive cars only because it connects to the water pump and faces the radiator while pulling air through the radiator's cooling fins 2005 Chevy Trailblazer Fan Clutch. Testing the engine compression on your 4. Related Parts Many people replace more than just the fan blades or fan clutch. The engine cooling fan is a variable speed fan. 1) Due to extensive research on Trailblazer SS Electro Viscous fans I found and documented that the ECM did not send control pulses to the fan clutch 2 min after startup no matter what the AC tables, AC Pressure, and ECT were doing or calling for. It will need to be replaced. So start your diagnosis by determining if the compressor clutch works. Specialty tools are needed to remove the fan clutch from the water pump. From this perspective, it acts much like an automatic clutch. I think you are onto something regarding the fan clutch. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. If the fan clutch is not functioning correctly, the fan won't spin at the right speed and therefore can't provide the cooling needed. We connect one fan to a source of power and turn it on. As the clutch disc pulls in towards the pulley, the pulley provides the rotating power to operate the compressor. Several symptoms may point to a. As temperatures increase, the clutch engages so that the fan is driven by engine power and moves air to cool the engine. If the fan never runs at all, the engine may overheat. If the fan spins easliy your fan clutch needs to be replaced???? I tested that today and the fan spins very easy. If the clutch doesn't engage, the air conditioning compressor can't pump refrigerant. Rather it is a guide to what you can expect to run into if you do have to replace an engine. GM Factory Part #:'s 25790869,15293048,15192191 Electronic Fan Clutch problems on Chevrolet Trailblazer, GMC Envoy, Buick Ranier, Oldsmobile Bravada, And Saab Vehicles. Step by Step Chevy Trailblazer 4. Here are the main headings of this article: Symptoms Of A Misfire. I was told to make the air gap between the clutch and the pulley assembly between 20-30 thousands. A fan clutch is a thermostatic engine cooling fan that can freewheel at low temperatures when cooling is not needed, allowing the engine to warm up faster, relieving unnecessary load on the engine. A fan clutch is featured on rear wheel drive cars only because it connects to the water pump and faces the radiator while pulling air through the radiator's cooling fins 2005 Chevy Trailblazer Fan Clutch. tomorrow morning 8 A. suggested i replace it also since the radiator was out, best to replace the water pump. This 2004 Chevy Trailblazer came in with multiple concerns. The fan clutch is a thermostatic component that is a part of the Chevrolet Silverado 2500 HD engine cooling system. This 2004 Chevrolet Trailblazer came in with a fairly loud roaring/whining noise coming from under the hood while the engine was running. The cooling fan speed is affected by many different conditions and can be adjusted from 10-90 percent duty cycle. Dirty transmission fluid and electrical problems can cause the device to malfunction, affecting the transmission fluid pressure, which activates the shifting of gears. I heard that when your engine gets to operating temperature you shut the engine off and spin the fan. If your fan clutch fails to engage, the engine can overheat. You should be able to spin the fan freely if the engine is cold,once the engine heats up the clutch should lock in, causing to fan the spin at it max to cool the radiator down ,once it cools down it will disengage and begain free spinning. The cooling fan control module varies the voltage drop across the engine cooling fan motor in relation to the pulse width modulated signal. Tools you'll need are pretty basic, eight, 10 and 13-millimeter sockets and ratchet, a flat-blade screwdriver, a large adjustable wrench and a hammer. The Engine Control Module ( ECM ) controls the fan speed by sending a pulse width modulated signal to the cooling fan speed control module. Be prepared this will be an expensive repair. 02 envoy, 6 cyl, loud wooshing noise when engine is cold. I have a 2003 Trailblazer with the 4. SCITOO Fan Clutch Electric Cooling Fan Parts Compatible with 2002-2009 Buick Rainier Chevrolet Trailblazer GMC Envoy Isuzu Ascender Oldsmobile Bravada Saab 9-7x $78. GM has issued a service bulletin to address a P0526 Cooling fan speed sensor circuit trouble code on the following vehicles: 2002-04 Olds Bravadas. Through research online, the ticking sound is directly related to the fan clutch failure many gm Trailblazer and envoy owners have experienced. Need to verify line pressure, and provided no valves in the TCC (Torque Converter Clutch) hydraulic circuit are worn, replace the torque converter. Most of the time it is a stuck Torque Converter Clutch (TCC) solenoid, but this is not the only cause of this problem. Problems with a blower motor resistor are common in many cars. If it doesnt turn easily by hand, the clutch is probably bad. Is there a - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. Has your Trailblazer or Envoy gone crazy and decided to not let you move the shifter or put it in gear??? Its an easy $10 fix. When they begin to fail they will usually display a few symptoms that will alert the driver This article originally appeared on YourMechanic. 2002-06 GMC Envoy XL Electric Fan Clutch. If you are going to get rid of the vehicle in a year or two, get a cheap Hayden fan clutch. I found out about the fan clutch problem spiking and replaced it. 0V to 5V every few inches when turning the fan. fan clutch damage. It currently does not work, and at this point it isnt needed. Please post your question on our "Questions" section for more information: AutoCodes. Some symptoms include ticking or other noises from the fan clutch area. The fan clutch relies on several components to function. Once engine speed is above 2500 rpm the fan must disengage because the sound fades away. If the fan clutch seizes, it remains engaged all the time, cooling off the engine too much. SCITOO Fan Clutch Electric Cooling Fan Parts Compatible with 2002-2009 Buick Rainier Chevrolet Trailblazer GMC Envoy Isuzu Ascender Oldsmobile Bravada Saab 9-7x $78. My chevy never overheated prior to the new fan clutch being installed, EXCEPT when the plow was on, and even yet it only did so at highway (over 45mph) speed. The cooling fan speed is affected by many different conditions and can be adjusted from 10-90 percent duty cycle. The PCM supplies power and ground to the clutch hall effect sensor of the cooling fan clutch. 2002-05 Chevy TrailBlazers & TrailBlazer EXTs, GMC Envoys & Envoy XLs. You could get the fan errors programmed out by PCMofNC (formerly PCM4Less) and just get a 2008/2009 regular viscous clutch. If I remember correctly the clutch was somewhere between $150 and $200. The boys at the shop had a reunion around the truck. 02-03 model GMT-360 trucks (trailblazer and envoy) and the faulty fan clutch. The second time was about three weeks ago. Ninety percent is considered high fan speed. At a stop, though, because the fan clutch doesn't engage and air isn't forced through the radiator, the engine can't dissipate excess heat. Water Pump and Fan Clutch share the same shaft. Order Timing Cover for your 2002 Chevrolet Trailblazer and pick it up in store—make your purchase, find a store near you, and get directions. or if not elec fan, the fan clutch. If during operation, the PCM detects a loss of the cooling fan speed signal, DTC P0526 will set. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. The fan may not be squarely mounted on the shaft. Fan Clutch Removal A fan clutch is featured on rear wheel drive cars only because it connects to the water pump and faces the radiator while pulling air through the radiator's cooling fins 2005 Chevy Trailblazer Water Pump And Fan Clutch. The clutch in this repair was a defective clutch and we were willing to cause damage to the clutch since our plans were to install a new clutch. (2) output control (3) speed sensor input (hall effect. 2003 TrailBlazer Fan Clutch Problems. upon investigating this issue i found literally thousands of complaints on the internet regarding the chevrolet trailblazer and its premature fan clutch failures. Oil Mixed with Coolant. i have a 2003 trailblazer, had problem with loud noise from clutch fan. Get Yours Today! We have the best products at the right price. Factory and many generic scan tools can activate specific components; the compressor clutch is one of them. "Many times the problem lies in the air distribution system under the dash, not the refrigeration system under the hood," he says. My MAIN reasons for believing it was the fan clutch and not the water pump is there are no coolant leaks, overheating problems, and I 100% have the dreaded jet engine whooshing sound at high RPMs. It is a VERY common failure in these vehicles and you are likely to replace it several times in the lifespan that you own it, or so I'm told. 2002-04 Olds Bravada Electric Fan Clutch. You can absolutely replace the fan clutch on your 2003 Trailblazer yourself. If it is a fan clutch, and you have mechanical aptitude, change it. 2002-05 Chevy TrailBlazers & TrailBlazer EXTs, GMC Envoys & Envoy XLs. that thay have been having ruff idle issues with the 4. Fan Speed High. Point of reference- I run the aluminum-headed 383 blower motor in my Malibu with a 4-core radiator out of an 80s Olds 442 and a thermally compensated standard duty clutch fan. IT REVS VERY HIGH AND THERE IS A NOTICEABLE POWER LOSS WITH ACCELERATION. In a nutshell: There are two major components that make up a thermal fan clutch: A reservoir filled with Silicon fluid, that's inside the fan clutch itself, and a bimetallic coil on the outside. The 2003 Chevrolet Trailblazer has 3 problems reported for clutch fan failure. How to Tell if You Have a Faulty Coolant Temperature Sensor April 10, 2012 A miscalibrated coolant temperature sensor (CTS) can result in excessive NOx emissions and overheating by masking problems with insuffient coolant. By the time the dealer gets done with "diagnosing" the problem, you would be cheaper off to buy a new Radiator ($300 for a good aftermarket, $420 or so from CDAN), Fan Clutch ($115), and Thermostat ($20) and replace it all yourself (3 hours or so). Problems with Trailblazer Fan Clutch? Hello everybody I am having some issues with our 2004 Trailblazer! We had Fan clutch problems about 6 months ago, when the engine light came on and i heared the fan really loud everytime i started the car. When going from park to either reverse or drive it slams into gear. Fan clutch noise 10 Answers. How to Test a Fan Clutch. What harm can bad fan clutch cause to trailblazer? If the fan clutch is good then when the engine is turned off the fan should only turn 1 or 2 turns. Trailblazer home made clutch fan tool - Duration: 7:31. Engine Mechanical: Misfire Troubleshooting. We here at Auto Parts Warehouse want to make sure you're happy with your car part purchases. A bad fan clutch will cause the fan to not operate as it should. This original equipment engine cooling fan clutch is a GM-recommended replacement for your vehicle’s original components and has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors. The contact heard a loud noise when the engine was started and discovered that the fan belt was. 2003 Chevrolet Trailblazer LS 4. The fan clutch in your 2003 Chevy TrailBlazer is mounted between the fan and the fan belt pulley on the water pump. While most drivers recognize the signs of an overheating engine, many do not immediately think of the fan clutch as the cause. Automotive Recalls and Technical Service Bulletins for 2003 Chevy Truck TrailBlazer 2WD L6-4. Quickly Checking the Thermostat's Operation. The fan clutch is designed to improve the vehicle's cooling system efficiency while reducing the load on the engine and loss of energy caused by the fan itself. The intermittent cooling until you get moving is most likely the fan clutch. i have a 2003 trailblazer, had problem with loud noise from clutch fan. fan clutch and diagnostic tips for cooling fan noise, delayed. The fan clutch relies on several components to function. The most common symptom of a failed blower motor resistor is when the heater fan only runs at the highest speed setting (4 or 5) and doesn't work at low speeds. GMC Envoy/ Chevy Trailblazer Electronic Fan Clutch Removal & Installation Instructions Also Fits: Olsmobile Bravada, Buick Ranier, Isuzu Ascender, & Sabb Vehicles GM Part #: 15293048, 25790869, 15192191 AKA: Cooling Fan Speed Sensor, Electro-Viscous (EV) Fan Clutch, Electronic Fan Clutch Symptoms that may require fan clutch replacement: Excessive Fan Noise and/or Check Engine Light On…. Turned it back on and tried to see if it would work and it didn't. Trailblazer home made clutch fan tool - Duration: 7:31. At idle, the cooling fan speed will drag to approximately 500 RPM then oscillate between 300 and 600 RPM. Symptoms of a Bad or Failing Fan Clutch 1. A faulty fan clutch can be one of the most debilitating conditions for the vehicle, especially in summer. 2002-09 Chevy Trailblazer Electric Fan Clutch. If you're mechanically inclined (It's a huge PITA), you can remove the fan and clutch and run the engine briefly to see if the noise has been eliminated. The fan clutch would have a sloppy feel if you rocked it at 9&3 positions. Fix Fan clutch issues Rainier Trailblazer S10 Ascender Bravada 9-7X S15 Envoy. Engine (31%) Transmission and Drivetrain (10%) Brakes and Traction Control (5%) Suspension and Steering (22%) Electrical and Air Conditioning (25%) Paint, Rust, Leaks, Rattles, and Trim (3%) Other (4%). The clutch in this repair was a defective clutch and we were willing to cause damage to the clutch since our plans were to install a new clutch. 02 Chevy Trailblazer 4. This is for my 2004 Chevy Trailblazer LS. 2003 Trailblazer vent dont Vent air flow will ot change to defrost or floor on A/C or heater. The hall effect sensor returns a signal pulse through the speed signal circuit in response to the reluctor track, which is located inside the fan clutch. From this perspective, it acts much like an automatic clutch. Watch the fan clutch while the engine is on, and if the clutch is moving on the shaft, this is a simple fix. Intermittent Bad Ignition Switch Causes Low Power and No Blower Motor. The main issue was intermittent low power. Com 13560+ Best Fan Thestylishnomad. Check out free battery charging and engine diagnostic testing while you are in store. How do you bypass the ac pressure switch? I need to put in some freon and the pressure is so low that the pressure switch won't let the compressor kick in. does it have an electric fan? if so, it could be bad. And if you are unsure whether the fan clutch is the culprit or something else is to be blamed for the niggles that your car is showing, here are a few tell-tale signs that the fan clutch may need to be replaced. This loud noise can be confused with high rpm's, but the engine is not racing fast. Do I have to replace the fan clutch in my 2003 chevy trailblazer for saftey reasons if I am hearing a tiking noise quite - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. continues to run high for about three or four blocks. As I continued holding the fan the engine got hotter and I could feel the fan surge increasing as I assume the clutch engagement pulse percentage was increasing. The PCM supplies power and ground to the clutch hall effect sensor of the cooling fan clutch. A fan clutch is designed to cool the engine when it becomes too hot and on the verge of overheating. blackericdenice 18,155 views. This is for my 2004 Chevy Trailblazer LS. If you are experiencing symptoms like frequent stalling, poor idling of the car at 500 to 600 rpms, a massive drop in the rpms slowing down the car to a crawl, a noticeable drop in engine power, poor mileage, abnormal acceleration activity, frequent stumbling, etc. How do you bypass the ac pressure switch? I need to put in some freon and the pressure is so low that the pressure switch won't let the compressor kick in. I was driving up to South Dakota when I had P0495 "Cooling Fan High Speed" pop up. Wide selection of Miller Welder Parts Online. is this normal or does fan clutch need replaced Fan clutches for Envoys and Trailblazer are a problem, they go out all the time. 2 is not an easy engine to pull. When this happened, the customer said that the Electronic Throttle Control, ABS, Traction Control, and sometimes the 4WD lights would come on. Excessively loud cooling fans. When AC is off for when the clutch is not engaged - no noise at all… I have been getting alot of different answers as to what it could be and it is very confusing… to me - it sounds like a clutch issue and I have seen videos on how to take apart and see if it is a bearing or bad clutch. Remove the air cleaner assembly from the engine compartment. Fuel injector symptoms for bad, faulty, dirty, clogged, leaking injectors: poor starting, idle, performance, fuel consumption, failed emissions, detonation. Check the bolt and washer on the center and be sure that it is tight. But you have to have the A/C on to create this problem, if the A/C is off it will idle fine. Ran just below 210 with AC off (normal temp). 2003 Chevrolet Trailblazer LS 4. The engine needs to operate at a set temperature, and if the fan runs constantly, it may run below the optimal temperature. 33 and $192. Before attempting to diagnose converter clutch electrical problems, mechanical checks such as linkage adjustments and oil level should be performed and corrected as needed. If during operation, the PCM detects a loss of the cooling fan speed signal, DTC P0526 will set. Fan Speed High is the generic description for the P0495 code, but the manufacturer may have a different description. Was quoted $3300 at Canadian Tire. P0480 CHEVROLET More Information. Some symptoms include ticking or other noises from the fan clutch area. The fan clutch is responsible for pushing radiator fluid through the water pump, which keeps the engine cool. Replied by coffee412 on topic Over Charged Air Conditioning Now, I can see this is going to turn into a big discussion on what freon. GMC refuses to buy back vehicle. sounds like a airplane when first start up. It was giving the symptoms of high idle and it was like the fan was blowing too much air.