awdsully
NAXJA Forum User
- Location
- Fort Collins, CO
I know there are many different threads with discussion on this problem, but nothing has really been helpful to my particular case so I have to ask for some helpful advice!
Specifics:
1994 Cherokee Country 4.0HO ODO shows 218k but previous owner claims motor was rebuilt.
Anyway, car started having a rough idle by dropping to about 500rpm and acting like it wanted to stall and occasionally would, especially when throttle was applied.
When throttle is applied from idle, it stumbles and eventually climbs to rpm. Leaving a really rich smell. After about 1500rpm it runs perfect.
To start I did a simple tune up with plugs, plug wires, dist cap, rotor, and a fuel filter. Also ran BG44k through her. Helped a little but still horrible gas mileage and rough idle running rich.
More recently I have done Throttle Position Sensor, MAP sensor, cleaned all around the throttle body and IAC. Also replaced O2 sensor, compression tested and all around 140lbs, and lowest being 130lbs. Fuel pressures came back fine, and there seem to be no vacuum leaks.
Ive currently got the injectors sitting in B12 injector cleaner, and after playing with a meter they all read about the same voltage.
I'm out of ideas! Please help!!
Thank you!
Specifics:
1994 Cherokee Country 4.0HO ODO shows 218k but previous owner claims motor was rebuilt.
Anyway, car started having a rough idle by dropping to about 500rpm and acting like it wanted to stall and occasionally would, especially when throttle was applied.
When throttle is applied from idle, it stumbles and eventually climbs to rpm. Leaving a really rich smell. After about 1500rpm it runs perfect.
To start I did a simple tune up with plugs, plug wires, dist cap, rotor, and a fuel filter. Also ran BG44k through her. Helped a little but still horrible gas mileage and rough idle running rich.
More recently I have done Throttle Position Sensor, MAP sensor, cleaned all around the throttle body and IAC. Also replaced O2 sensor, compression tested and all around 140lbs, and lowest being 130lbs. Fuel pressures came back fine, and there seem to be no vacuum leaks.
Ive currently got the injectors sitting in B12 injector cleaner, and after playing with a meter they all read about the same voltage.
I'm out of ideas! Please help!!
Thank you!