idles rough and stalls at stops.
Sep 23, 2017 at 8:19 AM
engine runs erratically
2003 JEEP LIBERTY
ROGER BREWER
- MEMBER
- 2 POSTS
Advertisement
STEVE W.
- ✓ASE Certified Mechanic
- 15,200 POSTS
Check engine light on?
Rough idle suggests misfires and shutting down suggests loss of power. When were the plugs changed last?
The 3.7 needs a plug change every 35,000 miles or so. Use the OEM style copper plugs not the fancy iridium or platinum plugs, those will cause misfires on their own.
Check for vacuum leaks and clean the throttle body.
Rough idle suggests misfires and shutting down suggests loss of power. When were the plugs changed last?
The 3.7 needs a plug change every 35,000 miles or so. Use the OEM style copper plugs not the fancy iridium or platinum plugs, those will cause misfires on their own.
Check for vacuum leaks and clean the throttle body.
Sep 23, 2017 at 11:39 PM
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.