Trouble code 45

Tiny
SDANDERSON5150
  • MEMBER
  • 1991 PONTIAC FIREBIRD
  • 3.1L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 142,000 MILES
Replaced oxygen sensor, digital EGR new ECM. New injectors, new pigtail connectors on distributor and coil, new TPS. Drives fine if let sit in park a few minutes starts idling rough then flashes code 45. Let it sit for a while drive around no problems come back let sit idling in park a couple minutes light comes back on.
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Monday, January 15th, 2018 AT 6:55 PM

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Tiny
PATENTED_REPAIR_PRO
  • EXPERT
Check your fuel pressure at idle and make sure it is not above 47 psi, cause the norm is 41-47 psi and if you have too much fuel pressure at idle, this might be causing the rich fuel mixture. If the fuel pressure is too high, check for a kink in a metal fuel line causing back pressure.
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Wednesday, January 17th, 2018 AT 7:06 AM

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