I have a 1989 Cherokee 4.0L Manual transmission.
When my jeep is cold and I start it up, the idle sets down to 500 RPM's. If I barely even touch the accelerator, the thing hesitates, then speeds up a bit. If I get it up to, say, 1000 RPM's, then let off the throttle, the RPM's will dip below the 500 mark, almost stall, then pick back up. Obviously this aint good.
I've done all the common tune up jobs (filters, plugs, etc). I cleaned all my grounds, and resistance from all parts is 0. I have two TPS's, and checked them both on it. Hell, I even unplugged the TPS and started it up - exact same thing happend.
The problem goes away at normal temperature, yet if I really hammer on the accelerator, it still hesitates.
Any idea what this could be? I disconnected the line that goes from the EGR solenoid to the EGR-Transducer, no effect. I plugged it, no effect. Disconnected the TPS and started it, no effect.
I did search the forums but I can't find symptoms exactly to what mine are, and most threads end without any conclusion as to how the problem was fixed.
I appreciate any help. Thanks!
When my jeep is cold and I start it up, the idle sets down to 500 RPM's. If I barely even touch the accelerator, the thing hesitates, then speeds up a bit. If I get it up to, say, 1000 RPM's, then let off the throttle, the RPM's will dip below the 500 mark, almost stall, then pick back up. Obviously this aint good.
I've done all the common tune up jobs (filters, plugs, etc). I cleaned all my grounds, and resistance from all parts is 0. I have two TPS's, and checked them both on it. Hell, I even unplugged the TPS and started it up - exact same thing happend.
The problem goes away at normal temperature, yet if I really hammer on the accelerator, it still hesitates.
Any idea what this could be? I disconnected the line that goes from the EGR solenoid to the EGR-Transducer, no effect. I plugged it, no effect. Disconnected the TPS and started it, no effect.
I did search the forums but I can't find symptoms exactly to what mine are, and most threads end without any conclusion as to how the problem was fixed.
I appreciate any help. Thanks!