2000 Pontiac Grand Prix Service engine light flashes and s

Tiny
MR.MIKE1956
  • MEMBER
  • 2000 PONTIAC GRAND PRIX
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 65,000 MILES
Car began tio misfire and run like a cylinder was not firing. Engine runs fine at idle and with light acceleration. Misfire returns under heavier acceleration. Car misfires under load
Tuesday, November 25th, 2008 AT 10:16 PM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
I would have the ignition module tested at any autoparts store for free.

If OK, then check fuel pressure with a mechanical gauge.

If OK then remove and inspect spark plugs, look for gas/oil soaking.

If OK, then have a backpressure test performed on the CAT, it may be partially clogged.

If OK, then I would replace the plugs/wires and coil pack.
Was this
answer
helpful?
Yes
No
Thursday, November 27th, 2008 AT 7:57 AM

Please login or register to post a reply.

Sponsored links