1991 Holden Commodore Repair Question

Topics covered: Coil pack, Gas, Sensor.
Mileage: 200,000 miles.

Asked on April 10, 2012

My holden 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...behaves as if

See above

Replied on April 10, 2012

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!

Answered by merlin2021 (expert)
18,145 answers provided

Replied on April 17, 2012

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

Answered by mhpautos (expert)
26,913 answers provided

Replied on April 18, 2012

Thanks Mark.

Answered by merlin2021 (expert)
18,145 answers provided