viscous fan clutch troubleshooting
2004-12-07T10:24:41-05:00 If your fan clutch has gone bad, replace it as soon as possible to prevent engine damage. 39 0 obj <>/Filter/FlateDecode/ID[<343069EB290844C787926BF2F1BCCBDD>]/Index[14 44]/Info 13 0 R/Length 111/Prev 69591/Root 15 0 R/Size 58/Type/XRef/W[1 2 1]>>stream Truck Repair; Viscus fan on MP8 MACK engine on all the time, happened. 0000000016 00000 n . Keep your engine temperature below 210F (99C) while youre running your tests to prevent it from overheating. trailer Our community has been around for many years and pride ourselves on offering unbiased, critical discussion among people of all different backgrounds. 0 Last Updated: August 7, 2022 When I say it disengages, I mean it coasts to a stop! endstream endobj 15 0 obj <>>> endobj 16 0 obj <>/Font<>/ProcSet[/PDF/Text]/Properties<>>>/Rotate 0/TrimBox[0.0 0.0 612.0 792.0]/Type/Page>> endobj 17 0 obj <>stream 0000060428 00000 n Check the gauge for proper operation (especially electric gauges). y8#870S9sA1\ Some fan clutches are designed with a built-in thermometer somewhere on the instrument panel. Get Started > Always in stock Manufacturers names, logos, part numbers and descriptions are used for reference purposes only and are not intended to indicate that our fans, fan clutches or fan assemblies are made by the OEM. Quick tutorial on how to refill your viscous fan clutch with proper fluid and reseal the chamber. Standard thermostatic fan clutches will only be present on cars and trucks with rear-wheel drive. If it spins more than three full rotations, this indicates that it may be prone to slipping. Too fast to try and slow it with a rag. Suggestion: See if there's any foreign object stuck on clutch fan, if any foreign objects absent, then it is likely the clutch fan. 0000069649 00000 n If fan speed is not detected a DTC will be set. On the other hand, too much heat can be a big problem, melting non-metal engine parts and rendering lubricating oil useless. (The previous clutch had loose bearings.) Solenoid coil / Actuator check - Try rotating solenoid coil / actuator and see if it's stuck, 5. Also verify no indication of viscous fluid leakage. )Qo8Ni{Im'Ur$z3-XfLdE1c=e/ n4 a#I63px&LW42C`?c+fO~ lM |}&&`z`x7tv}3l6yUoo7~0EoeYf eh80/ar;)B]T# - GENERAL GEORGE S. PATTON. Adobe d I think its doing what u r saying, just hard to tell how hard it should be trying to pull out of hand. Original fan and water pump. By landing on this page, were guessing you know exactly what one does: This is what a fan clutch does, if youre unsure. It is these rings, and the silicon fluid in the gaps between them that couple the system together.The inner ring is taller than the others. The engine temp reads a little low all the time, about 2-3 notches below 210. Keep holding it while the engine gets hotter, As it gets hotter, you should start feeling some tugging from the fan trying to get it going. Your vehicles fan clutch is an often overlooked but important little partits responsible for gauging the temperature of the air passing through the radiator and keeping the engine from overheating. This animation of Horton's latest variable-speed fan drive, the LCX, shows viscous cooling technology in action. %PDF-1.4 % Swap the fan relay with another similar one in the fuse box (headlight IIRC) and see if the problem persists. May daughters use it now. 0000049576 00000 n Troubleshooting steps 1. This article was co-authored by Ed Beery. 1. ~HO8$/` qAXwx$XA, uHfX m@;d;Hh22Ig 7Ya These elements are natural in the process of Writing in a foreign language. If not, it's defective. Next, locate the fan clutch bolted to the water pump in the engine compartment. Overheating constantly, in trafc and on long pulls Check the coolant level. Some viscous properties of the fan hub may vary the res It would definitely do damage. The fluid wears, rendering it incapable of grabbing the drive and driven plates and offer the gripping resistance needed to hold them together. B=uJqc-I]-Y;6?VGx#qL.Vb&3Lv.EA5NYH$9&V=%n" A roaring noise could mean a number of things, including a bad wheel bearing, worn tires, or a differential that's low on oil. 4294967295 endstream endobj 45 0 obj 216635 endobj 46 0 obj<>stream this is a brief video to show a simple diagnostic test to see if you have a fan clutch that has failed to produce torque. An overheating engine could literally weld itself into scrap metal. Before you go looking for your fan clutch, make sure your vehicle is in park, with the engine off and the handbrake firmly engaged. The fan clutch unit is approximately 1 foot tall by 1 foot wide. If it feels the same, then I would assume the clutch is done. One (of many) of my top things to do is service the Transmission. This condition will cease shortly upon disengagement. %%EOF I replaced it earlier this year while chasing an overheating condition (along with the Water Pump and Thermostat). Success stories from users of variable-speed cooling solutions. If the fan clutch is going bad or has failed, there are a couple of ways you may notice. The "drive disc" spins freely in the housing except for the silicon fluid. The wires run in a rubber hose in front of the fan. Subject: Troubleshooting Vehicles Equipped with Viscous Fan Drives Qualify by assuming the vehicle to be in OEM condition. Engine still runs great! A viscous fan clutch enables the fan to more or less freewheel . When this happens, many of the symptoms described above can be experienced. They make a loud whirling sound at highway speeds and when revving the engine.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'freeasestudyguides_com-medrectangle-4','ezslot_3',116,'0','0'])};__ez_fad_position('div-gpt-ad-freeasestudyguides_com-medrectangle-4-0'); Because the crankshaft drives this fan, check the accessory drive belt for wear and glazing. 3000000/10000 450 The fan clutch should always engage when the system head pressure reaches in the 240 to 270 lbs range. 0000001421 00000 n Warning: This post may contain misspelling, grammatical errors, disorganized sentence structure. Thank u LB. Simply follow the steps below and you rill receive a replacement part number. You can also perform this test while the vehicle is parked and in neutral gear. It does not function like an on/off drive. A failing fan clutch could leave you stranded with expensive repair bills, so pay attention to these symptoms. Inside the fan clutch, there is a small reservoir filled with a viscous silicone-based oil. Mack truck 2014 cxu613 mp8 .i replaced clutch fan controlled by air solenoid but now fan kick in 180 f till drops temp 150f on hill at high load.scr derating sign shows into dash but there is . Skip to content Visit Us Diesel Components Inc. 670 E. Travelers Trail #105 Burnsville, MN 55337 Send an Email sales@dieselcomponentsinc.com Call us (800) 252-6625| (952) 890-2885 Buy Parts SERVICES You could put +12V to the white wire, which will effectively put the fan to 100% engagement but my method will also show if it works at partial engagement. Then test the fan clutch by giving it a good push. Very good info on the function of the EV Clutch however, the quick function test requires a Tech 2. '06 Trailblazer LS, '14 Silverado LT Z71, and '17 Jeep Renegade Trailhawk, "Chance Favors The Prepared Mind" Dr. Louis Pasteur, You can't have my fish, but if you ask nicely, I'll help you catch your own. 0000057354 00000 n The pwm feed is positive so if that breaks it defaults to unlocked. Identify Your Viscous Fan Clutch If you are unable to find a part number on your viscous fan clutch, our easy-to-use fan clutch identification system will walk you through the process of measuring it to determine the proper replacement. By using our site, you agree to our. Here, you can see where the fan and fan clutch are driven by the engine. Here's a list of the most common fan clutch noises and what each one could mean: 1. Clutch fan check - See if any visible damage on clutch fan, 3. g? By signing up you are agreeing to receive emails according to our privacy policy. Equally frustrating is diagnosing the fault. 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. Now what? Make sure your new fan clutch is the same type as the original. Found loose internal connections at the harness connector on the clutch and tightened them up a bit. DT 1AQ"aq2 #BR3$bC4% Possible Cause: Try rotating the bottom part (solenoid coil / actuator) with hand. . 0000066928 00000 n Seek the source of issue elsewhere, Possible Cause: The outer part or solenoid coil has signs of fluid leaking. The newest viscous drives also feature Cold-Start Disengagement, which can help trucks and agricultural tractors warm up faster during cold conditions. I took a rag and dragged it against the outer part of the fan and was able to slow it with some firm pressure and eventually stopped it. By . I'm open to ideas. 0000070141 00000 n 3000000/10000 If necessary, use the hood strut to hold the hood up so you can work unobstructed. Inspecting the Fan Clutch Manually Download Article 1 Pop the hood. Any input would be appreciated. During engine start up, the EV fan clutch will engage and match engine speed for up to 3 minutes. Once stopped I can hold with light pressure of single finger or thumbpad, and after revving at 2k RPM same result to stop and hold. Like any other part, fan clutches can develop issues that, if left unchecked, can be both devastating and costly. Suggestion: Normally it has nothing to do with clutch fan. ELK\KHA(gYIm|eTjQ Gb$cqla7?Nf$77X!ry~1h1,amo 2jI&zI? Z;:QJ-uvgMq4Z(*n *ER"Mvz. If you have difficulty rotating or it's just stuck, then it could be either foreign object or clutch fan. 0000060378 00000 n Traces of oil are perfectly normal, and wont necessarily be an indication that your clutch is shot. Consider the symptoms listed above and be aware of potential failure. Stopped with rag pushed in for a few minutes but couldnt see any temp rise, with air on, but its 55F here. Wire check - See if the wire to ECU is normal 4. I only found it while trying to force it to overheat. This includes heavy- and medium-duty trucks, agricultural tractors, vocational and specialty vehicles. If you still need assistance, contact our customer service team at (800) 810-9110. A binding fan clutch will typically be accompanied with warm air flow from the A/C, since the fan isnt turning the way it should be. Thank you! Give the water pump hose a quick jostle as well to see if the problem might lie there. Ed Beery is an Automotive Specialist and the Owner of InTechgrity Automotive Excellence based in Denver, Colorado. Okay, so in your other post to me about testing it you say that the one in this video is bad. Possible Cause: Damaged engine fan usually caused by friction, wear or entry of foreign objects. http://www.popularmechanics.com/cars/how-to/a302/1772922/, http://www.offroaders.com/tech/fan-clutch.htm, https://itstillruns.com/test-fan-clutch-5086903.html, https://www.2carpros.com/articles/how-a-clutch-fan-works, http://www.aa1car.com/library/cooling_fan_clutch.htm, https://club.autodoc.co.uk/magazin/how-to-check-the-engine-cooling-fan, https://www.2carpros.com/articles/fan-clutch-removal. I just joined today and been digging into whether I should replace EV on 2004 Buick Rainier 5.3. xref Due to their control by the engine computer, they don't experience air leaks. Yes, the one in this video is bad. 0000001895 00000 n uuid:2ce534b2-d8a3-11d8-a54e-a63691f3af4c 42 0 obj <> endobj When I say it disengages, I mean it coasts to a stop! tt4*ittd830z02OL0 p Engine fan consume the largest portion of the energy supply from the engine, up to 10%. These fans are needed at slow speeds, typically below 35 mph and at idle. % of people told us that this article helped them. We recommend that you check the transducer and fan clutch assembly. adobe:docid:photoshop:2ce534b1-d8a3-11d8-a54e-a63691f3af4c ` This is considered normal and may last more than 3 minutes in cooler climates or at lower driving speeds resulting in fan roar. It will regulate engine temperatures more efficiently compared to older direct fuel injection engine models. It is possible something like a plastic bag could have got wound up where the shaft goes in to the bearing. My fan seems to run fast all the time but not loud like the jet engine i've read about. Install the Horton EC450 TM Fan Clutch on the engine. While youre at it, consider the performance and fuel economy benefits of upgrading to electric cooling fans. Squeaks while doing it too. The valve is activated by a pulse width modulation (PWM) output signal from the powertrain control module (PCM). HWyTSW; * 1d!y ZmK*8gA:s9hG{F;3U9Q]DMNDIBM. For your own safety, you should never attempt to manually test your fan clutch while the vehicle is running. 0000002179 00000 n endstream endobj 43 0 obj <> endobj 44 0 obj <>/Font<>>>/Fields 35 0 R>> endobj 45 0 obj <>/Font<>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/Rotate 0/Type/Page>> endobj 46 0 obj <>/Border[0 0 0]/H/P/Rect[54 2.64001 576 14.64]/Subtype/Link/Type/Annot>> endobj 47 0 obj <> endobj 48 0 obj <> endobj 49 0 obj <>stream The fan clutch experts at Kit Masters can help you identify your fan so that you can determine the correct replacement. "By perseverance, study, and eternal desire, any man can become great." Also when I first press the gas pedal it seems like the engine wants to stall which is probably something totally different? Troubleshooting Common Condenser Fan Problems, Signs and Symptoms of Spark Plug Problems, Reasons Why Your Car's Idle Speed Might Be Too High, Engine Ignition and Cam Timing for the Novice, Troubleshooting Engine Driveability Problems: Surging or Misfiring. These fans are more efficient than flex fans that are controlled by engine speed instead of temperature. Usually a bad or failing fan clutch will produce a few symptoms that can alert the driver of a potential issue. Were kidding of course. As fan clutch specialists, weve seen plenty of faulty viscous drives in our time. This means that the fan should power down at higher speeds because the rushing air is sufficient for cooling the engine. It will cost somewhere between $150-300 to have a new fan clutch installed, on average. Luckily, there are a few symptoms you can look for to diagnose whether the fault is a seized fan clutch or not. 0000014403 00000 n They contain a drive and driven plate with annular grooves that fill with a thick viscous silicon fluid. The engine cooling fan, made of plastic or metal, isnt hard-connected to the fan pulley or water pump, but instead is soft-connected via the fan clutch. You are using an out of date browser. The fan fault is logged in your engine management system. It disengaged once at 206 degrees, another time at 217 degrees but sometimes it stays engaged. One of two conditions is possible. Give us some info about your project, and a Horton rep will contact you. This fluid's viscosity is measured in CST or centistokes and degrades over time. Ideally, the fan shouldnt spin more than 1-1 times. Contact Whatsapp: +6012 879 3220 if you need any product! Both parts tend to wear out at about the same time, so if one is giving you trouble, the other may not be far behind. Thank you. o! Now somethimes it only gets to halfway to 210, even in the summer. It should turn smoothly with some drag. We don't all go to a dealer to get work done right away. Engine overheating at low speed or when stopped is the most-common fan clutch failure symptom. The fan clutch should be disengaged with no voltage applied. It may not display this or other websites correctly. The fluid flows from a reservoir to the plate area at higher engine temperatures and returns to let the fan spin more freely as the engine cools. Wanted to get some input/feed backI have always done basic maintenance after purchasing a used vehicle regardless of what or anything that I know from the previous owner that's been serviced. Squeaks while doing it too. 0000002090 00000 n When a fan clutch seizes, the engine is put at considerable risk from overheating, or over-cooling, and the damage done can be catastrophic if left alone. I am going to do a re test of mine, I think it is bad and I want to be sure. Suggestion: Clutch fan isn't the source of the issue. X For more information about ASE, visit the official ASE website at www.ase.com, Copyright 2008-2023 All Rights Reserved Privacy Policy Disclaimer Sitemap. OK. Identify Your Viscous Fan Clutch. Has the waterpump bearing seized around the fan shaft? We had a few overheating issues at Bremer Bay Why is it overlooked?
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