Resurrecting this old thread. 0000069993 00000 n wikiHow is where trusted research and expert knowledge come together. 0000001551 00000 n tt4*ittd830z02OL0 p DT 2004-12-07T12:21:43-05:00 This should lock the clutch and pull air like a dump truck. Some fan clutches are designed with a built-in thermometer somewhere on the instrument panel. 77 0 obj <>stream The fan fault is logged in your engine management system. 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. A slipping fan clutch can result in failed cooling, increased engine strain, and poor fuel efficiency, which is why its important to evaluate the condition your vehicles fan clutch if you suspect it might be wearing out. hb```c``Jg`e`fgc@ >(GCPa J0 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 0000035192 00000 n Shows the signals to and from the the fan and how the fan operates when commanded by the PCM and the scanner. It was a junkyard unit off an 03 Envoy. 2004-12-07T12:21:43-05:00 . 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. Okay, so in your other post to me about testing it you say that the one in this video is bad. Fan clutch have a patented System Sentry, which goes about as an early cautioning fuse to alarm the administrator. VAT No. Its possible to upgrade from a non-thermal clutch to a more efficient thermal model, but not the other way around. A roaring noise could mean a number of things, including a bad wheel bearing, worn tires, or a differential that's low on oil. We use cookies and similar web technologies to recognize your repeat website visits and preferences and to analyze traffic. No CEL. These elements are natural in the process of Writing in a foreign language. If the fan clutch is going bad or has failed, there are a couple of ways you may notice. (The previous clutch had loose bearings.) The fan clutch experts at Kit Masters can help you identify your fan so that you can determine the correct replacement. 0000066631 00000 n The info I posted regarding a locked clutch (beyond a few minutes) is still accurate. 0 Its even more annoying if you dont know what role the fan clutch plays as part of the engine cooling system in your engine! Engine fan check - See if any damages on fan 2. Has the waterpump bearing seized around the fan shaft? When cruising, the vehicle moving through the air pushes air through the radiator, cooling the engine. Never seems to lock up completely (or even the 90%) I tried applying 12v to the clutch directly (white wire) but there was no speed change. 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. o! 0000000016 00000 n hks8>Gw3Lg^Y 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. If it feels rough or does not turn then replace the drive. &\cUj 0000037348 00000 n May daughters use it now. Tuning and Understanding your Toyota Viscous Fan Clutch 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 It is possible something like a plastic bag could have got wound up where the shaft goes in to the bearing. I just checked, and yes the speed increase and decrease with rpm. The oil flows to and from the main chamber as engine heat fluctuates, engaging and disengaging the clutch. When the engine is off, there are a few things you can do to check the fan clutch: The internal combustion engine generates a lot of heat, which the engine cooling system is tasked with moderating. 0000002090 00000 n The fan clutch unit is approximately 1 foot tall by 1 foot wide. When the fan clutch engages, it spins up greatly, increasing air flow through the radiator and over the engine. It relies on temp sensor to detect temperature and send signals through ECM/ECU and switches the clutch fan to different levels accordingly. 0000036305 00000 n DIY: Viscous Fan Clutch - Silicone Oil Refill - YouTube - GENERAL GEORGE S. PATTON. As a result, you may think that your fan clutch has seized. The fan clutch should be disengaged with no voltage applied. If your fan clutch has gone bad, replace it as soon as possible to prevent engine damage. Solenoid coil / Actuator testor - Test solenoid coil / Actuator if you have an actuator tester. Please note, comments must be approved before they are published, Solenoid coil / Actuator unable to rotate, When the engine is in low temperature or in capacity, the clutch is separated, fan speed rotates at low speed, When the engine is at high capacity and the water temperature rises, the clutch coupled and rotate together, the fan rotates at high speed, When water temperate reach designated low temperature, the clutch reverts back to separated state, The ECU will detect temperature via water temp sensor and operate accordingly. image/tiff 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 . By clicking Accept All Cookies, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. The "drive disc" spins freely in the housing except for the silicon fluid. Always check for manufacturer's specifications for any special procedures. PDF IK0900075 - Horton Stratis Fan Hub Diagnostics Page 1 of 6 6% If you find youre experiencing any of these fan clutch symptoms make sure to get your fan clutch checked out properly by a professional technician to correctly diagnose the issue. Unit 6 Scandinavia CourtChain Bar RoadCleckheatonBD19 3QW UK. There are 7 references cited in this article, which can be found at the bottom of the page. It may work at 100% but maybe not at 20-30%. Read more! that did the trick. All browsing and transactions within are secured by an SSL Certificate with high-strength encryption. Electronic-Viscous Fan Clutch Troubleshooting. A little heat is a good thing, improving fuel vaporization, performance, and fuel economy it also warms up the cabin in the winter. xref A locked-in, or seized, fan clutch can cause radiator fans to fully engage at all speeds. How to Tell If Your Fan Clutch Is Going Bad - LiveAbout Then test the fan clutch by giving it a good push. Yes, the one in this video is bad. If it feels the same, then I would assume the clutch is done. Technical Services (UK) Ltd trading as Viscofans. I'm open to ideas. ()*6789:FGHIJVWXYZefghijtuvwxyz ? When it happens its especially hard to take when you need your vehicle or application to finish a job. 3000000/10000 Found loose internal connections at the harness connector on the clutch and tightened them up a bit. The PCM supplies a 5-volt reference and a low reference to the Hall effect sensor. Check it by releasing it from its seat and measuring the distance between the spring and its retainer. hbbd``b`:$@. 0000035283 00000 n Get Started > Always in stock Now somethimes it only gets to halfway to 210, even in the summer. For more information about how to test a fan clutch, such as other signs to look for which indicate damage, read on. For more information about how to test a fan clutch, such as other signs to look for which indicate damage, read on. It does not function like an on/off drive. My fan seems to run fast all the time but not loud like the jet engine i've read about. Viscous Fan Clutch | Kit Masters I fixed the pictures in my thread. [KpB0G8/F7Xl u@qLTAUzpT0F,)xb7J+%*u)EkZ2mJikWc[B, 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. Suggestion: See if there's any foreign object stuck on clutch fan, if any foreign objects absent, then it is likely the clutch fan. During engine start up, the EV fan clutch will engage and match engine speed for up to 3 minutes. Thank you. In most cases, fan blades are designed to flex up to. Right when it stop it tried to "tick" forward as I was holding it. This condition will cease shortly upon disengagement. It disengaged once at 206 degrees, another time at 217 degrees but sometimes it stays engaged. Check the gauge for proper operation (especially electric gauges). The 2 halves opened. Success stories from users of variable-speed cooling solutions. B=uJqc-I]-Y;6?VGx#qL.Vb&3Lv.EA5NYH$9&V=%n" How Does a Viscous Fan Clutch Work? - YouTube If it spins more than three full rotations, this indicates that it may be prone to slipping. E&OE All information displayed on this website is correct at the time of publication but is subject to change. 2021 Viscofans.