Vehicle & Technical > Jeep

viscus fan

<< < (2/3) > >>

Delk:
After you start the engine you should hear the fan quite down when the viscous fan starts to slip. The fan will continue to move but not as fast as the engine. When the engine warms up enough to require the fan the viscoucs coupling will start to grab and the fan will start making more noise again.

dxmedia:
With a cold engine spin the fan - you should feel little to no resitance

With the engine hot (in your case creeping to too hot). Kill the engine, pop the bonnet and spin the fan. It should be hard to spin. If there's still little to no resistance then the viscous coupling is knackered.

Pop the stat out, stick it in a pan of water with a sugar thermometer and see what temperature the stat opens at too.

J66P:
the fan will from stone cold have some resistance, run it for just a couple of minutes then turn it off and try the spin test

Russell:
i had a quick look today and when cold it has a bit of resistance but when it heats up to 100 on the temperature gauge and thats just on tickover the fan has very little resistance. As soon as you drive and it has a bit of air flow through the rad the temperature comes straight down and stays really low. Ill have a look at the stat tomorrow and refit the cowl if i can find it.

dxmedia:

--- Quote from: Russell on January 10, 2010, 00:22:34 ---i had a quick look today and when cold it has a bit of resistance but when it heats up to 100 on the temperature gauge and thats just on tickover the fan has very little resistance.

--- End quote ---


Viscous unit is foobared.



The reason that when you drive it cools down is because of the air flow through the rad.

Navigation

[0] Message Index

[#] Next page

[*] Previous page