2002 JGC bleeding ps fluid through the transame oil cooler
Asked by BCraig2727 Apr 09, 2018 at 10:11 AM about the 2002 Jeep Grand Cherokee Limited 4WD
Question type: Maintenance & Repair
I put a new transmission valve body on and it ran
great. Next day I Replaced the leaking ps pump.
Started to drive the jeep and power steering fluid
burst out of the Transmission Oil Cooler. I
replaced the Trans oil cooler and it burst it again
leaking ps fluid. I don't see any tranny fluid coming
the lines when I crank the jeep just ps fluid
4 Answers
Power steering and automatic transmission fluid look very much the same. Are you sure that the leak is not from a power steering hose?
BCraig2727 answered 6 years ago
I'm 100% sure it's not from ps hose. When I add the ps fluid it gushing out of the trans oil cooler. Something is causing that presure to build up and burst the trans oil cooler. I didn't have this problem until I put the new ps pump on.
Consulted with a friend that owns a 2004 Jeep Cherokkee, he says that there is a transmission oil pressure sensor, he had to replace it some years back because it went bad and the fluid was backing up. Maybe this is your problem and a coincidence that it happened just after you replaced the valve body. Adding fluid to the power steering pump should not create this type of problem with the transmission, they are two different systems.
BCraig2727 answered 6 years ago
Thanks Jorge! I'm going to replace that sensor tomorrow and hope that it solve my problem!
