98 grand cherokee laredo 4x4
Hey guys I've run into another problem. So the quick version is I've changed plugs, plug wires, distributor cap and botton. Even changed out the TPS and MAP sensors just changed the CPS as told by another jeep owner and still a stall and rough idle....other then being out of time what else is there...All ideas are appreciate, thanks in advance. (98 Grand Cherokee laredo 4x4 4.0)
CF Veteran




Joined: Nov 2015
Posts: 2,863
Likes: 201
From: syracuse ny
Year: 1997 230,000 miles
Model: Grand Cherokee (ZJ)
Engine: 4.0, new lifters valve job with new springs and exhaust valves, preload set with shims
Lets see, you got the spark covered, might be compression, might be fuel.
Well I decided to go out and test a few things, also took the carb and all sensors out to clean the carb and noticed after everything but the IACV was hooked up and I noticed while cleaning it and put it all back together that when I started it the missfire/stall didn't ease up so 1 by 1 I started in. I unplugged the map sensor and it died same with the TPS but when I unplugged the IACV there was no change.....is it supposed to be like that or have I found my problem?


