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Thread: EGR valve
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Old 08-19-2008, 01:23 PM
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Quote:
Originally Posted by richard stewart 3rd
If the egr valve is stick open it will cause,
rough idling, a vacuum leak, & hesitation.
if stuck closed it can cause knocking (pinging)
Rich

Good addition! I forgot that they can stick open too. Seen lots of them back in the day.
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