Hi all Back again. I am still having problems getting my 1986 Cherokee Pioneer with 2.46L engine and Throttle Body Injection, to give a smooth acceleration under load. Seems to be more pronounced during the lower part of the power curve. Downhill it seems to have great acceleration. (No Jokes Please) When it starts up a hill it slows down and depressing the accelerator pedal seems to make it bog down worse. Depressing the pedal to the floor seems to really cause it to bog down. If I downshift to a lower gear and get the RPMs up it seems to be better. But with many hills I have to go down two or more gears to even get it over the hill. The hills are not all that great. Have tried changing the Map Sensor, checking the hose connections around the TBI for vacuum leaks, all hoses for good connections and proper placement. When I remove the injector from the Throttle Body I found only one small O Ring at the bottom. (My manual shows two. One near the top of the body) I tried replacing it but still have same results. Any suggestions of something I might check and/or have missed? Is there any computer codes used on this model that might give me some clues as to the problem? One again thanks for all of your help. Don Smith
- posted
19 years ago