Originally Posted by Son-of-Beast
Be sure and only use the approved fluid, no generic fluids - I had a mechanic darn near ruin my hydraulic system by using regualr brake/PS fluid - the 4.7 has a 3-spd hydraulic fan that needs a lot of pressure - mixed fluids are bad, the fan won't run, and the engine will overheat.
I see, but when reading this post I see that I clearly have a the same problems as explained here.
My fan is working, but only on idle, full speed is never achieved. A week ago I finally refilled my A/C and checked today that the fan spins a bit faster when turning on the A/C on LO. So im gonna change chage PS fluid and replace the 9 year old belt tensioner. Hopefully this will end the overheating issue and give me better steering assistanse.
Do you have the hydraulic fan system?
[B]2004 WJ 2,7 CRD. [/B]
2" OME lift, rear addco swaybar, 17" Ion Alloy 171 w/33/12,5x17 Baja MTZ's, 2 din bezel, 30" led lightbar, JKS adjustable trackbar, Rancho SS, Bullbar, Projector Headlights, front Carolina Drivline. Bilstein shocks for 4" lift, 2"BB, IRO front UCA.
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