MY 1991 HOLDEN COMMODORE VN V6 IS PLAYING UP

  • Tiny
  • p mckenzie
  • 1991 Holden Commodore
  • 200,000 miles

My 1991 Holden Commodore vn v6 is playing up. Engine erratically breaking down/running rough/ clouds of unburnt black exhaust when it does. Not all the time. Suspect ignition problem. Coil bank. Sensor. Wiring. Has had new computer a few yrs ago.

Tuesday, April 10th, 2012 AT 10:30 AM

3 Answers

  • Tiny
  • merlin2021
  • Expert
  • 17,583 posts

Running too rich, check. Vacuum line at feul pressure regulator if any gas is present, replace it, also O 2 sensors are beyond replacement age!

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Tuesday, April 10th, 2012 AT 3:49 PM
  • Tiny
  • mhpautos
  • Expert
  • 29,842 posts

Often faulty coil packs and leads on these will cause this, but also check what merlin has suggested as well.

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Tuesday, April 17th, 2012 AT 10:37 PM
  • Tiny
  • merlin2021
  • Expert
  • 17,583 posts

Thanks Mark.

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Wednesday, April 18th, 2012 AT 12:20 AM

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