Question about 1991 Buick Park Avenue
I have replaced the computer, ingnition control mod. and fuel filter. The code read crank sensor, i replaced it , same problem. It will run fine then just quit, usually when i am coasting to a stop. I even tried another battery and cleaned all the terminals and Battery. Fuel pressure is 45 psi . Any help would be awsome!!!!
'91 Park Avenue, 3.8 liter. Best car I've ever owned, but recently having a similar problem.
Starts okay and runs fine when cold but as it warms up will begin to miss, occasionally backfire then stall while driving. I will usually refuse to start again.
It sounds like the timing is off when trying to re-start because cranking resistance seems low (cranks super fast) and often backfires if it fires at all. When cold, cranking sounds normal. If allowed to sit and cool for a couple of hours, it will start just fine and run normally for a while.
Temperature readings and fluid levels are normal.
Sounds like the EGR valve is bad.
Posted on Jun 29, 2009
Go have it inspected
Posted on Apr 02, 2009
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Posted on Jan 02, 2017
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