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2004 Pontiac Grand Am fuel injectors not firing

Tiny
JAYMAN420
  • MEMBER
  • 2004 PONTIAC GRAND AM
Electrical problem
2004 Pontiac Grand Am 4 cyl Front Wheel Drive Automatic

i checked all relays, fuses, and fuel pressure but injectors still not firing. Mass air flow is new so what other sensors could affect injectorrs?
Saturday, July 24th, 2010 AT 11:53 AM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Did you check for voltage at the injector plug? Goes hot when you turn on the key. If no ground, several possibilities, security system-- no rpm signal-- faulty injector-- faulty wiring circuit.
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Thursday, July 30th, 2020 AT 5:01 PM

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