SPONSORED LINKS

2000 Pontiac Grand Am Engine miss

Tiny
KEVIN MORAN
  • MEMBER
  • 2000 PONTIAC GRAND AM
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 155,000 MILES
Car usually starts fine. When put under load the engine misfires/bucks. Can get car up to highway speed by easing into the throttle but any time you give it too much throttle the RPM drops and car bucks.
Tuesday, March 16th, 2010 AT 6:32 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Engine running rough or misfiring can be cause by the following-inspect and test all the following below:
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.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Tuesday, March 16th, 2010 AT 8:43 PM

Please login or register to post a reply.

Related Engine Misfire Content

Intermittent Misfire
VIDEO
Intermittent Misfire
Instructional repair video
Misfire Random Code P0300
GUIDE
Misfire Random Code P0300
The world of automotive diagnostics can be complex, with numerous codes and potential issues to keep track of. One of the more common engine diagnostic codes is P0300, which...
VIEW MORE

Sponsored links