CHEVY ROUGH IDLE

1998 Chevrolet Venture

Tiny

shawnzzz

June, 30, 2010 AT 4:47 PM

Engine Performance problem
1998 Chevy Venture 6 cyl Front Wheel Drive Automatic 120000 miles

what could cause the motor to rough idle besides the coil packs and plugs/ wires

FOUND 2422 RELATED QUESTIONS

1 Answer

Tiny

rasmataz

June, 30, 2010 AT 6:01 PM

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

The following below could cause it

1. Defective spark plug
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. Idle air control valve.

Please login or register to post a reply.

Cylinder Head Valve Job Guide
Vacuum Leak Test and Repair - All Cars