HI all. i am new the forum, I have a 94 jeep Grand Cherokee Larado. Mine just started having issues, oil pressure normally runs even at 40psi- driving or at idle. but here recently it popped codes for O2 sensor, EGR valve, and Intake air temp sensor, now oil psi is 40 driving and 80 at idle...........As well having issues with heater showing and error (er) message on the temp display on occasion. And is anyone else having issues with a the comp showing "service 4wheel drive sensor" what dose this mean??
As I am not a mechanic ..... and do not know much about how to fix vehicles.
But i am trying to learn

 

Welcome to CF from Texas, I'm sure someone can help out here... not too technical myself :P

 

Thank you . Me either, but as i said i am learning.

 

I don't know shyt about the 5.2L.. Welcome from TEXAS...

 

Mine had the same message for the 4 wheel drive sensor. I put it in neutral and cycled the 4WD lever and it went away.

 

Welcome from Wisconsin. Not familiar with GC's.

 

 

Up date..............Replaced battery and has solved all most every issue that was happening. Which makes me happy !!! The only one i have now is heater when on high and defrost puts an extreme load on my new battery. not while driving but stopped at idle.