I just found this forum, and hope you guys can help.
My 88 will sputter and backfire through the throttle body when it is under load, warmed up (190+) between 1200-2100 rpms. This problem is intermittant and seems to have no pattern other than what I listed, although some days it will seem to do it more and some days very seldom.
I have replaced the CPS, TPS, and swapped the MAP, no luck. It also has new plugs, wires, and dist cap and rotor. Anyone got any ideas? Also his jeep seems like when it hits @ 3000 rpm like it gets a sudden boost of power it didn't have before, this is my first auto XJ so I am not sure if that is just the way it is with an auto or another symptom of my problem.
I look foward to contributing and sharing on this site now that I ahve found it, if I can get this darn stumble out of my engine!
My 88 will sputter and backfire through the throttle body when it is under load, warmed up (190+) between 1200-2100 rpms. This problem is intermittant and seems to have no pattern other than what I listed, although some days it will seem to do it more and some days very seldom.
I have replaced the CPS, TPS, and swapped the MAP, no luck. It also has new plugs, wires, and dist cap and rotor. Anyone got any ideas? Also his jeep seems like when it hits @ 3000 rpm like it gets a sudden boost of power it didn't have before, this is my first auto XJ so I am not sure if that is just the way it is with an auto or another symptom of my problem.
I look foward to contributing and sharing on this site now that I ahve found it, if I can get this darn stumble out of my engine!