Question about Chevrolet G20
Have you scanned for fault codes? How about the Throttle position sensor, have you tested it?
Posted on May 20, 2016
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Posted on Jan 02, 2017
This could be a number of things but i think that your problem sounds like a vacuum leak or an EGR problem. Try listening for leaks and try un-plugging the EGR solenoid valve one time.
Posted on Apr 17, 2009
problem like this on garden tractor ,was weak coil ,-when engine at low manifold pressure[idle] spark could jump gap and fire cylinder ,higher pressure /under load-wouldn't fire...check color of spark -orange,yellow ,white spark=weak, blue spark is stronge,
Posted on May 14, 2009
SOURCE: Engine starts then dies
Probably MAF. Mass air flow sensor, or idle control system/ sensor.
I have actually heard of some people having this problem because of a faulty heat sending unit, which doesn't show up on scan, but i'm still betting on the MAF. Good luck, let me know what you find.
Posted on Jun 22, 2009
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