Question about 1994 Toyota 4Runner
REPLACE the EGR valve and gasket, stop being cheap. sometimes there are things that cant be fixed. It could have a micro crack in it or a bad spring. Just brake down and replace it. I have been there so many times. You smack your head into the wall for hours on something that you dance around for months. Let me know once you replace it.
Posted on Nov 07, 2008
Replace the Vacuum Switching Valve for the EGR.
You have looked at all the possibilities except the VSV. This is probably your culprit.
Posted on Oct 10, 2008
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