dnp

You know, I had been wondering about the EGR. I used to have an Impala SS years ago, and they were bad about having slow speed running / idling problems when the EGR went bad......I'll be sure to check that. Question though: I haven't checked the fuel pressure, and I plan to do so; however, if I, in fact, had a clogged fuel filter, wouldn't it run fine at idle, but have problems as I ran at higher RPM's? The truck runs great at anything over about 1500 RPM........just curious It certainly could have the effect with a mostly clogged fuel filter. At idle there is enough fuel passing the filter to run fine. When you need more fuel not enough gets through and it starves the engine. If you can remember the last time you changed it. Its probably time to anyway. Good point to all who have suggested the fuel filter change. That'll be the first place I start

You know, I had been wondering about the EGR. I used to have an Impala SS years ago, and they were bad about having slow speed running / idling problems when the EGR went bad......I'll be sure to check that. Question though: I haven't checked the fuel pressure, and I plan to do so; however, if I, in fact, had a clogged fuel filter, wouldn't it run fine at idle, but have problems as I ran at higher RPM's? The truck runs great at anything over about 1500 RPM........just curious

Thanks. I haven't tried that, but I'll give it a shot.

I've asked this question on several Cherokee / Comanche forums, and I haven't ever gotten a single suggestion......I KNOW some of you know these vehicles well enough to give me some advice: My '89 MJ cranks and runs fine (203,000 miles and doesn't smoke); however, just when I start to accelerate (right off of idle), it will sputter and die UNLESS I go ahead and give it a lot more throttle. Then it runs fine. Likewise, when driving and letting off the accelerator when coming up to a stop light, etc., it'll die almost every time. It'll crank right back up, but the damn thing just doesn't want to run right when normally accelerating from a stop and won't stay running when coming to a stop. The CPS has been replaced. Cap, rotor, wires, and plugs have been recently replaced. I also just thoroughly cleaned both the throttle body and the IAC............any other suggestions would be greatly appreciated!