Question about 1991 Buick Park Avenue

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1991 buick park avenue will not stay running and runs rough

Hi my 91 buick alarm went off with the keys in the ignition then the lock in the back would not unlock even if forced manually. Then it started getting hard to start and then didn't start at all. We replaced the coil and the ignition modual. It started but would not stay running. When it was running it ran very rough and would not stay running. The cataletic converter was glowing red hot and once again will not start. Any ideas or where to check next.

Vicky Beck

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  • daisyaday2 Jan 27, 2009

    I had the same problem with my 1991 Park Ave. The alarm would go off parked in the driveway. The lights would be flashing and the horn would be

    blowing. All the neighbors would look at me when it did this. I would have to go to it and unlock the doors and start it up and then turn it off and lock it back. This problem turned out to be the security alarm system that had gone out. I had to take it to the Buick place to get it fixed. But if my husband could have fixed it, naturally it would have been alot cheaper.

    I think it ran around $75.00 - 100.00. It has never done this again.



    This may not have helped your problem but it still may help to know this.

    Sylvia

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I think you got your answer to the alarm issue. I had the same problem with rough idling, lack of power, and the chugging that occured when going up hill. I have a 1991 Park Avenue with 190k miles. Fixing the catalytic converter helped, but the real problem was in the ignition control module. It seems that older buicks will heat these units to the point that the glue inside melts and eventually exposes the electronics. Look for glue or exposed wires below the ignition coil. It's a $100 part that you should be able to change yourself. I hope that helps.

Posted on Apr 07, 2009

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Hey i have a 1991 buick park ave i lost my keys i went to the dealer to get one made they said its to old no codes are comen up what do i do please help


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