1999 Pontiac Grand Prix cold starting

Tiny
PAT KEEGAN
  • MEMBER
  • 1999 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 200,000 MILES
Have problems starting in cold weather (below 10C).
Car starts but in a second or two it stops. When it is warm and running the rad cooling fans don't come on. If I disconnect the engine temperature sensor, cold starting is good and coolong fans run. Engine light is on and two engine codes show up PO102 and P0118. Can you help?
Do you
have the same problem?
Yes
No
Friday, May 15th, 2009 AT 7:49 AM

1 Reply

Tiny
MMPRINCE4000
  • MEMBER
Codes indicate a Mass Air Flow/or MAP sensor error.

Try cleaning it first, you can buy MAF sensor cleaner at most autoparts stores.

If problem persists, then I would get a used MAF/MAP from a junkyard and try it. New or rebuild ones are not cheap.

If you have access to scan tool, then check reading of MAFMAP in live data mode. If MAF/MAP readings stay stagnant, then MAF/MAP would be cause.
Was this
answer
helpful?
Yes
No
Friday, May 15th, 2009 AT 8:39 AM

Please login or register to post a reply.

Sponsored links