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2000 Pontiac Bonniville

Tiny
FALLON
  • MEMBER
  • 2000 PONTIAC BONNEVILLE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 274,000 MILES
My car is having random misfires. We replaced the spark plugs as well as the spark plug wires and coil pack. Now the car is running even worse. We also noticed that out of 6 of the spark plugs only 4 of them are sparking. What could be the problem?
Thursday, November 18th, 2010 AT 3:58 AM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check and test the crankshaft position sesor-
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Thursday, November 18th, 2010 AT 4:03 AM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
I didn't see engine litre size? I'd want to check circuits at the ignition module. If bypass ignition, the ignition module controls spark timing during cranking. I'll have to double check.
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Thursday, November 18th, 2010 AT 4:05 AM

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