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2000 Pontiac Bonneville

Tiny
TALOSHASMITH
  • MEMBER
  • 2000 PONTIAC BONNEVILLE
Shakes or Wobbles problem
2000 Pontiac Bonneville 6 cyl Automatic 140000 miles

my car was recentlly put on a tester and one code said replace throttle sensor which I did another said misfire in cylinder 4 I replace sparkpleg and wires and notice the old one on 4 was burned after all that it still shakes and runs rough what do I do now
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Thursday, August 19th, 2010 AT 7:49 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Engine running rough or misfiring can be cause by the following: Inspect and test

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.
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Thursday, August 19th, 2010 AT 9:13 PM

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