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Fan always on
Is it normal for 97 v6 limited to have the fan always on?
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Just Which Fan ??
Engine Cooling fan ?? HVAC Fan ?? |
Haha sorry. Engine fan. The big propeller that pulls me down the road.
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Originally Posted by thealexdexter
(Post 52347813)
Haha sorry. Engine fan. The big propeller that pulls me down the road.
Testing the fan clutch: If you have reason to suspect that the fan clutch is defective, here is the recommended procedure to verify the condition of the fan clutch. 1. Start the car (cold) with the hood open and note if the fan is turning, increase the engine RPM and note if the fan turns faster and the noise increases, if it does, first good indication, if it does not increase speed/noise, clutch is bad and needs to be replaced. (Remember, this must be tested after the car has been off for and extended period, over night etc.) 2. Leave engine running and note if the fan starts to slow down after 2-5 minutes, speed/noise should diminish and even raising the RPM, the fan should not make as much noise as when first starting, if it does slow, this is the second good indication. If speed/noise does not decrease, clutch may be “frozen” and should be replaced. 3. Leave the engine idle and watch the temperature indicator. When normal operating temperature has been reached, some increase in fan speed/noise should be noted, in particular when the RPM is increased. If temperature is fairly stable and the fan noise/speed increases or cycles, third good indication. If temperature indication continues to increase, with no increase in fan noise/speed, clutch is defective and should be replaced. 4. After the engine is at normal operating temperature or above, is the only time that the “rolled up newspaper” test that many people talk about should be performed! Take some newspaper and roll it up into a long narrow tube. Be careful, keep hands and fingers away from the fan while performing this test! With the engine at full operating temperature and idling, take the rolled up paper and insert it on the back side of the fan and try to reach the hub of the fan avoiding the blades until close to the hub. Push the rolled paper at the fan increasing the friction to the hub area of the fan. If the fan can not be stopped easily this is the fourth good indication, if it can be stopped the clutch is defective and should be replaced. Again, this test can only be performed when the engine is at or above full operating temperature. Testing can be performed in any order but just make sure the conditions during testing are those that are specified for that specific test. Do not continue to operate the engine if the temperature continues to rise and certainly stop if the temperature approaches “redline”. |
Keep in mind that even a properly-functioning one will never be stationary while the engine is running. If it's moving a lot of air all the time and generates a lot of wind noise, then the clutch is probably stuck. In my experience, thermostatic fan clutches usually start leaking and quit moving air(evidenced by climbing temps at low speed) well before they seize up.
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+1 to ^^^, including the LOL's.
Video's comparing good and bad liquid couplings by observing how closely they follow pulley speed here. |
Go get one from the junkyard. I've never personally had one go bad- they should last a really really long time. It'll sound like a freight train going down the road if it's locked up.
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whoops didn't check timestamp- this forum is so slow lately
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I noticed that myself.
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90’ 3.0 v6 4x4 Extened cab Fan clutch noise installed new fan clutch and now fan noise is very loud When driving It sounds as if the fan never disengages. How can I check if clutch is defective? Anyone? thanks in advance. |
Originally Posted by two feathers
(Post 52408283)
How can I check if clutch is defective? By reading what's already been posted where people share knowledge and experience, And it would help to ask people on forum appropriate for your model-year. |
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