Hydraulic Fan
Asked by DreamChasers Aug 13, 2016 at 09:39 PM about the 2005 Jeep Grand Cherokee Limited
Question type: Maintenance & Repair
Hey i have a jeep grand cherokee 2005 limited 5.7l and it
has a hydraulic fan. The fan works fine and i recently just
put a new power steering pump in and now is the fan that
is over accelerated and noisy. Do u guys now what i
should do or how do i fix it?
4 Answers
VulgarOgre answered 7 years ago
sounds like the fans clutch locked up making the fan run at the same speed as the engine best way to check is to try to spin the fan with your hand (engine off and cold ) if the fan doesnt move / spin easily then the clutch has locked up and you will need to replace the fan. if it does move easily then will need to look elsewhere
There is no fan clutch, it is hydraulic and speed varies automatically.
If you didn’t use the mopar hydraulic power steering fluid it can cause damage I’ve been reading(hopefully your fans okay). Just replaced my power steering pump with the wrong fluid and ordered the mopar stuff to flush it and replace it.
BigBadWolfAZ answered 3 years ago
The old guy at Napa told me any power steering fluid would work. He was extremely incorrect. The power steering system on a 2005 Grand Cherokee with the 5.7L engine also powers the hydraulic cooling fan. this system requires Mopar Replacement Electric Power Steering Fluid #68088485AB or equivalent. Otherwise you will clog the hydraulic fan pump and blow the power steering pressure hose .
