Where is EGR valve on 1994 Chevy S-10 4.3 vortec?
The EGR Valve is right under the air intake hose, these have a habit of getting jammed by pieces of carbon. You can remove the valve by disconnecting the wiring connector and removing the two bolts holding it on (10mm head) You should see the piece of carbon holding it open.
Good carb and choke cleaner will clean it up, the get a screened gasket to fix this issue once and for all. I cleaned mine about ten times in four years till I got a screened gasket, then no more issues.
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http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c152800bfd7d
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EGR valve keeps clogging up. Replaced valve and cleaned ports but problem returns after about six thousand miles
rough idling, poor acceleration, smelling raw gas very strong,skipping when accelerating
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