power steering
Asked by work6930 Feb 01, 2009 at 08:38 AM about the 2002 Jeep Grand Cherokee Overland 4WD
Question type: Maintenance & Repair
power steering pump runs in to cooling fan. can fan be bypassed and put electric fan on and power steering still work. power steering pump works fan. dumb set up if module goes bad it cost a fortune to replace
13 Answers
Seth-Tabitha answered 15 years ago
I worked at a Jeep dealer for 3+ years, never replaced a hydraulic cooling fan. I HAVE replaced the hose between the PS pump and the fan (the hoses sometimes leak) but the fan itself has proven to be very reliable. Has your fan module failed, or are you looking to the future? If you have not experienced a failure, I would not worry too much about it. I have seen Jeeps with 150,000+ miles and no leaks at the hydraulic fan. If you MUST eliminate the fan, you could get the PS hoses for a model with no hydraulic fan (I am fairly sure about this, but not 100%, I have honestly never paid attention to which Jeeps have the hydraulic fan and which ones don't) You would then need an aftermarket electric fan and fan controller. Make sure you get a controller that has the ability to incorporate the air conditioning, since the cooling fan needs to run when the A/C is on. Realistically, a fan large enough to cool a 4.7 liter v8 will run you at least $100. Add in the cost of the controller, the new ps hose, and the installation time, and you probably will not save any money at all. The hydraulic fan is a good system, and I would leave it alone if it were my car.
seth the fan module has failed. hard to find and about 900.00 my cost plus replacement labor
Seth-Tabitha answered 15 years ago
I suppose it is hard to find because they fail so rarely. I might even consider trying the salvage yards in your area to see if they have any. It sucks that the fan is so expensive, but I still think you are better off in the long run with the hydraulic fan versus the electric fan.
seth thanks for the help, I found one at a dealer, just going to fix it the right way thank you
$1,300.00 is what the dealer quoted me for just the hydraulic fan assembly without hoses... they want to charge $150.00 just to check it ...unfortunately for me it has cost over $500.00 to replace water pump, radiator, power steering alone....I have a 2001 Grand Cherokee Limited with a tow package.... I can't afford what I've put in it today much less if I have to buy a module & relay
Having same issues. In my research so far it can be switched to electric safely but have to use older model power steering pump as flow regulator is built into the hydraulic fan not in the PS pump as older models. If just changed the PS pump will last day or two without the regulator it seems. I agree though as can't find hydraulic fan at least with any warranty for less than $900! It may work well until it stops but can't just buy selinoid for it anymore either which was what I was going to try. I have all parts need on my 99 Cherokee with 4.7 as motor is gone in it.
mechanical fan and clutch assembly from a 2002 Explorer bolt right onto the Jeep and work perfectly you just have to reroute the hydraulic lines just to the steering box
SoCalJeepWJ answered 5 years ago
How do you bypass the hydraulic fan pressure switch to not get a check engine light when it is disconnected. I have a 2001 WJ 4.7 and have picked up all the fan parts from my local u pull it. But live in California and cannot have a check engine light due to smog laws.
Unknown777 answered 4 years ago
What do you do with the non- pressure line that goes from the hydraulic fan to the bottom of the pump?I am changing to a clutch type fan set up & their is no place for that return line to hook up???
BigBadWolfAZ answered 4 years ago
When converting a WJ to electric fan, remove the hydraulic solenoid from the hydraulic assembly. Reconnect it to the pcm harness. Put it out of the way and secure it with zip ties, and the ground wire. That should trick the pcm into believing the hydraulic fan is in place.
Doityaselfer answered 4 years ago
Question for the jeep man . We are having a leak at the bottom part of the hose at the hydrolic fan. We changed the hose today and the o ring and it still is leaking out of the same spot . It's a 2004 4.7 jeep grand cherokee as well . The hose was new and didnt seem noticeably messed up . And advice ?
BigBadWolfAZ answered 4 years ago
I am having the same issue. the pressure hose entering the hydraulic fan manifold blows at the connection. Even after changing the o-ring, it still blows out fluid at the same place. The problem started after replacing the power steering pump. Initially I used normal power steering fluid, but I believe it is all flushed out and replaced with a correct Mopar Electric Power Steering Fluid 68088485AB equivalent.