Question about 1999 Chevrolet Lumina
The problem you describe is almost certainly a bad/stopped-up catalytic converter. Not fuel line, not trunk seals, not head gasket or anything else. The fuel line answer is just wrong. If your catalytic converter is bad or stopped up, you will also almost certainly need to replace the Oxygen sensor as well.
You didn't say it smells like rotten eggs or sulfur, but that is the most commonly-stated description...it isn't accurate; a bad converter smells like a bad converter. Most people find the odor similar to rotten eggs or sulfur. A clogged exhaust system will shut an engine off after a short time due to backpressure and excessive temperature buildup.
Your check engine light should also be on. Read any diagnostic codes the PCM has set. I'm fairly sure your problem is the catalytic converter...
Wrenching GM Cars/Trucks For 40 Years
Posted on Apr 02, 2015
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Posted on Jan 02, 2017
check fluid level, make sure proper fluid is in transmission otherwise take to trans shop to diagnse if level and type is correct(check at idle normal operating temp)
Posted on Oct 21, 2009
try the air filter first and the intake.the spark plugs then and after all go to a garage for checking compression timing and the head gasket.
Posted on May 28, 2010
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