1989 Jeep Cherokee 6 cyl Four Wheel Drive Automatic
Compact size cherokee 4.0L. Seems that anything between idle and WOT is hesitating and popping through the intake only in gear. In park or nuetral seems fine. Already adjusted TPS and have checked plugs, IAC, CTS, MAT, MAP and fuel pressure. Only thing out of spec if fuel pressure. That does not increase with vacuum disconnected from regulator. It is supposed to go up 8-10 psi and does not. So, will that cause a popping and lack of power or do I have some kind of valve problem?
have the same problem?
Wednesday, December 9th, 2009 AT 6:07 PM