gach , what the problem is with the chevy is that the egr valve is getting full vacuum all at once. this is common on those units. take a piece of 1/8" copper tubing about 1" long and connect it to a hand held vacuum pump leaving the other end open.with side cutters restrict the tubing until the vacuum guage doesn't drop off imediately. you'll have to experiment a little as each engine responds differently.it's kinda like rejetting a carb. you'll want approximately 1 second delay from release to 0"of vac. this will fix the problem. mike
[This message has been edited by mike nixon (edited 06-16-2000).]
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so many pontiacs, so little time..................
moderator is a glorified word for an unappreciated prick..................
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