Question about 1994 GMC Safari
I had this same problem and found that The EGR valve
was not returning to the closed position at idle. Ran fine going down
the road but would not idle when I slowed or stopped. Removed the EGR
valve found it was full of carbon and occasionally a small chunk would
break loose and stick under the valve. Doesn't take much to cause a
problem. Cleaned the EGR valve reinstalled it and it cured the problem.
Not the easiest to remove - but it's easy to clean... better than buying a new EGR valve which is quite costly.
Remove air cleaner - use a long 3/8 extension with swivel - only 2 bolts just a bit awkward to get at. Unplug electrics and it comes right out.
Posted on Dec 16, 2008
Low idle sensor is probably bad.
Posted on Nov 06, 2008
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Posted on Jan 02, 2017
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