Question about 1998 GMC Jimmy
You may have a dirty or faulty Idle Control Valve. If it is not throwing a code or a check engine light, I suspect that it may be dirty/
Posted on Feb 13, 2012
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Posted on Jan 02, 2017
SOURCE: 1993 GMC Jimmy won't throttle
Check fuel pressure regulator.Start engine hook fuel gauge to fuel line check pressure ready then pull the vacuum hose of the fuel regulator if pressure rises 5-10 psi then its good.
Posted on May 13, 2011
have checked the play in the distributor shaft gear . excessive play can cause a timing problem for a moment. also has the service engine soon light came on with a code 42 for the ignition system. ignition control module can cause this concern also.
Posted on Jul 14, 2011
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