Question about 1991 Pontiac Firebird

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Motor swamp on a 1991 firebird when you turn key starter will not row over and fuel and ecm will not get current, check fusible links, the clutch switch works ok , the anti theft relay is ok, cant figure out what the problem is

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  • lipper540 Jun 01, 2010

    the wires on the starter are ok, if i put a jumper on on socket to the anti-theft relay i jumped the two out side spades and when i turned the key to the start position the engine would roll.

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  • Master
  • 1,627 Answers

You likely put the starter engagement wire on the wrong post[purple wire to the small post of the solenoid switch on the starer motor].The ecu will not get current until it sees engine rpm so you need to get it to crank first then recheck for power.

Posted on May 31, 2010

Testimonial: "thanks for the help we found the problem earlyer today but you were right it was a ground wire to the distributer that was hidden and did not get hooked up "

  • danny herget
    danny herget Jun 01, 2010

    Check for power to the neutral safety switch or the clutch pedal switch,see if you have power in and out of it when the key is in the crank position.If you do then you need to see if the relay also gets power,if not repair the wiring,if you have power at the relay in the crank position then you need to repair the ground to the relay.

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62217_isuzfuse_1.jpg
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