It run rough

1998 JEEP GRAND CHEROKEE

170,000 MILES

PIETZ189

MEMBER
6 POSTS
FOLLOW

I have replaced the fuel pump and the trottle position sensor and it runs fine sum days other days it shuts off when i try to stop and or spits and spuders to try and stay running and i did a fuel filter to it too.and a tune up it has no codes to go off of it a 5.9 and sum times it smells like gas but if i rev it up real good it runs fine after words.and at iedle it runs rough sum time too or will die.

Oct 13, 2011 at 5:15 AM

RASMATAZ

CAR REPAIR CONTRIBUTOR
75,992 POSTS

Do you have a check engine light and when was last tune-up??

Engine running rough or misfiring can be cause by the following:

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

1.Defective spark plugs
2.Inadequate spark/coil,defective spark plug wire.
3.Lack of compression
4.False air leakage.
5.Faulty fuel injectors.
6.Insufficient fuel pressure.
7.Contaminated fuel.
8.EGR valve that is leaking.
9.Oxygen sensors.
10.Throttle position sensor.
11.Manifold absolute pressure sensor
12.Mass Airflow Sensor
13.Idle air control valve

Note: If it doesn't apply disregard it-

Oct 13, 2011 at 5:23 AM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.