WHY WON'T IT START COLD?

  • Tiny
  • jackV
  • 2004 Pontiac Grand Am
  • 120,000 miles

04grand am 3.4 starts cold only with ether, then starts and runs fine until cold again. Injectors not firing in start position when cold only. Did this from one day to next. Had pluged fuel filter replaced this and fuelpump. Has spark in start position. Have not checked for codes yet.

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Thursday, March 22nd, 2012 AT 2:26 PM

3 Replies

  • Tiny
  • merlin2021
  • Expert
  • 17,587 posts

Check ect and maf sensor.

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Thursday, March 22nd, 2012 AT 3:48 PM
  • Tiny
  • jackV
  • Member

Thanks for the help. Upon further testing I found fuses #34(aux pwr/cigar) and #37(A/C BFC)blown, after replacement it started like a charm. Jack V

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Monday, March 26th, 2012 AT 1:59 AM
  • Tiny
  • merlin2021
  • Expert
  • 17,587 posts

Cigar fuse on some gm's ties into the ecm, so if it blows again, circuit tests may be needed.

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Monday, March 26th, 2012 AT 3:02 AM

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