No Injectior pulse 1991 firedbird

Asked by May 24, 2016 at 02:30 PM about the 1991 Pontiac Firebird Base

Question type: Maintenance & Repair

I have a 1991 pontiac firebird .31. auto  fuel injected .I get spark , fuel to the
fuel rail . ecm tested good . I get power to all the injectors  but no pulse ? I can
spray it with fuel and it it starts but stops once fuel burnt out . Any ideas ?

2 Answers

5,065

Where are you spraying the fuel? Into the air intake? If so, the problem may still be your injectors. Air and fuel need to mix to support ignition. Sounds like you may be adding fuel to the air feed and it is not "pulsing" through your injectors. With a 25 year old car, you may need injectors or the electronics that "pulse" them (not just voltage to the injector units).

1 of 1 people found this helpful.

Yes spraying fuel in to intake . I hook a test light to the injectors crank car and the light dont flash .I think i may have found the problem . The pickup coil looks to be coming apart ..... I been told By one person that these don't have crank sensors and others say they do . They sell one for the car but i can not find it anywhere ?

Your Answer

Pontiac Firebird Experts

  • #1
    Samuel Moore
    Reputation
    970
  • #2
    dandyoun
    Reputation
    810
  • #3
    John Saffrahn
    Reputation
    700
View All

Related Models For Sale

Used Chevrolet Camaro
418 Great Deals out of 31,676 listings starting at $2,395
Used Ford Mustang
744 Great Deals out of 42,182 listings starting at $1,300
Used Chevrolet Corvette
243 Great Deals out of 22,068 listings starting at $2,500
Used Pontiac Grand Prix
37 Great Deals out of 2,754 listings starting at $1,200
Used Ford F-150
2,121 Great Deals out of 181,534 listings starting at $1,000
Used Jeep Wrangler
273 Great Deals out of 15,725 listings starting at $2,997

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.