1990 Jeep Wagoneer Repair Question
I have a friend who has a 1990 jeep wagoneer, 4.0l, 6i. Why might it stumble on light acceleration and also lack power.
Have you checked engine compression?
57,318 answers provided
You sure the EGR is not opening too soon?
I checked the compression (dry) and the cylinders were all within 5 psi of each other, but I don't recall what the actual reading was. I can run them again if you could tell me what an acceptable reading should be, either wet, dry or both. thanks. As far as the EGR, how can I know if it's opening too early? Thanks for the responses!!!
Disable the EGR and test drive it-
should I pull the unit off, or should I just pull the hose? Do the symptoms indicate to you and EGR issue ? Thanks!!
You have to make sure the EGR valve is closed completely then block of the vac hose to it-
Rasmataz, I isolated EGR, plugged hoses, drove the car ..... still idled rough as soon as engaged into gear, and still hesitated upon light acceleration. Could there be a vacuum leak or restriction that i have not located ? What would you suggest as the best way to check ? Thanks, Frustrated
There is also an additional issue, though I don't know whether it's relared or not. Any time you attempt to start the car, it takes about 8 to 10 seconds of cranking to start,then once started the previously mentioned issue exists. Why the long cranking time? Thanks
Check the colant temperature sensor and IACV
Go to this link: http://www.2carpros.com/articles/engine-misfires-or-runs-rough