May 152014
 

I have a 1988 Pontiac Bonneville, that won’t stay on. Most of the time it cranks right up but soon dies out. I have replaced the battery, the starter, the fuel pump, fuel filter, and about nine months ago the mass air flow sensor. We’ve also had the alternator checked at Auto Zone and it’s still good. Any thoughts on what can be the problem?

  One Response to “1988 Pontiac Bonneville LE”

  1. 80 % of the time this would be from a bad Ignition Control module.
    18% of the time from a bad ECM.
    1% of the time a wiring, connection or sensor issue.
    1% a mechanical issue

    This is assuming you have no check engine light codes.

    If the Check Engine light is on, you can check the codes yourself; here is how: CHECK GM OBD I Codes

    If you have a code or codes, post them back in the comments and we will help you further.

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