They are controlled by internal hydraulics so they will always 'free wheel'. As the engine warms up, the valving within the clutch actuates it. Sounds OK to me.
If this happens when cold not when warm, check the clutch fork mechanism. It is attached to the clutch it looks like a long fork mechanism, grease it as it might be sticking when cold..
Yes it should.
Answerwhich vacuum system diagram are you looking for? Let me know.....bogeygolf46@aol.com I have a 1978 Corvette with factory a/c. The unit works fine except it blows the cold air on the floor rather than through the vents. I know they is an actuator that controls this but I can not find it.
there should be a pitcock on bottom of radiator to drain it. or take the bottom radiator hose with motor cold of course .
When the engine is cold, open the hood before starting up. Try and spin the fan by hand. The fan should spin with considerable resistance. If the fan free wheels with no resistance then the fan clutch is bad. If the fan does not spin at all, the clutch is seized.
when turning on air conditionor for cold air only get hot
30 psi cold
The cast of The Cold Call - 1976 includes: John Cleese as himself Jonathan Lynn
Yes, the fan clutch is temperature sensitive and at cold the clutch can be expected to freewheel the fan.
You simply see if it spins freely. If it does, the clutch fan is shot! Do this while motor is turned off The fan should spin freely if the engine is cold. If the engine is warmed up, shut down the engine and check the fan. Warm, the fan should turn, but should have some drag to it.
c5 corvette has bad sending units[ engineer world its called a transducer], $600 to replace since the intake manifold has to be R & R ALSO, when cold the Oil pressure will be in the 70 psi range then when hot, on a stock c5 this happens quickly because GM designed the car to run hot to paSS EMMISSIONS, IT WILL DROP TO APPROX 20 PSI. Normal operationg oil pressure for a 1999 corvette should be anywhere for 50 to 60 psi depending on oil one is using.
Cold Lake Provincial Park was created on 1976-08-18.