Hi!
I have a problem with my power steering. It only works before the engine has reached operating temp and when it is hot I have to rev it to get full power steering. The power steering has worked great for more than a year of daily driving and about 15 days of wheeling since I bought it.
The problems started when I changed power steering fluid and ran it with the return line disengaged to empty it completely. I just ran it for maybe 5 sec. The pump would not work properly after that and leaked even more than it was doing before.
After that I have installed another used pump from a ZJ 4.0 and it has never worked properly. There is no air in the fluid and it does not make a lot of noise as a failed/failing pump usually does. I got a bad belt squeal after the pump installation and changed idler pulley with no effect and then changed water pump and the squeal disappeared. I thought that maybe the water pump was so hard to turn that it somehow made the ps-pump not turn correctly on the belt. But the old water pump turned very easily so maybe I was just lucky and got the right tension on the belt to get rid of the squeal.
The steering works just fine when I drive it around town but as soon as I am standing still and want to turn my wheels (31" AT's) I have to put in in neutral and rev it or move forward. The steering box does not move and the uniframe is reinforced
A new PS-pump here in Sweden costs about 250$ and a Durango steering box about the same.
Can anybody give me any tips on where to go from here?
Does the ZJ 4.0 PS-pump have the same rating as a Cherokee 4.0 pump?
Have I ruined the steering box by idling the engine to make it empty out the fluid?
Looking forward to your help :roll:
I have a problem with my power steering. It only works before the engine has reached operating temp and when it is hot I have to rev it to get full power steering. The power steering has worked great for more than a year of daily driving and about 15 days of wheeling since I bought it.
The problems started when I changed power steering fluid and ran it with the return line disengaged to empty it completely. I just ran it for maybe 5 sec. The pump would not work properly after that and leaked even more than it was doing before.
After that I have installed another used pump from a ZJ 4.0 and it has never worked properly. There is no air in the fluid and it does not make a lot of noise as a failed/failing pump usually does. I got a bad belt squeal after the pump installation and changed idler pulley with no effect and then changed water pump and the squeal disappeared. I thought that maybe the water pump was so hard to turn that it somehow made the ps-pump not turn correctly on the belt. But the old water pump turned very easily so maybe I was just lucky and got the right tension on the belt to get rid of the squeal.
The steering works just fine when I drive it around town but as soon as I am standing still and want to turn my wheels (31" AT's) I have to put in in neutral and rev it or move forward. The steering box does not move and the uniframe is reinforced
A new PS-pump here in Sweden costs about 250$ and a Durango steering box about the same.
Can anybody give me any tips on where to go from here?
Does the ZJ 4.0 PS-pump have the same rating as a Cherokee 4.0 pump?
Have I ruined the steering box by idling the engine to make it empty out the fluid?
Looking forward to your help :roll:
