Question about 1994 Chevrolet Lumina APV

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Motor boggs down when driving

Van idles fine . when driving it boggs down almost to a stall and then boost of power . done a tune up complete , oil change , and removed the ac for a bad pully but have noticed heavy carbon on the inside of the throddle body with a rich gas smell under the hood.

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My van had the same promblem no power then just picked back up and ran great. It was the knock senor, located on the front of the motor beside the starter.

Posted on Feb 07, 2012

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Sounds like you have a finished exhaust manifold gasket and possibly a intake gasket problem.this will certainly give you the excess carbon and gas smell you speak of. another could be a loose or worn timimg belt.before going any further have your vehicule scannedand do a compression test. then you will be sure what to repair.

Posted on Dec 05, 2011

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Put a fuel system cleaner in the gas. try checking o2 sensors and clean all that carbon out of the throttle body

Posted on Nov 07, 2008

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