Question about 1990 Buick LeSabre
You need to check fuel pressure. You can rent the tool to do this at autozone. Just screw it onto the relief valve which is usually on the fuel line before the throttle body. Then start the car and read the pressure. Watch to see if the pressure drops before the car dies. NOTE the pressure will drop after it stalls thats normal. If it does drop BEFORE the call stalls its either the fuel filter or the fuel pump.
If the pressure is good, check for a vacuum leak, listen for hissing while running, make sure you dont lean into the moving belts with long hair or loose clothes.
Posted on Aug 25, 2010
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Posted on Jan 02, 2017
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