Thread: EGR Code P0400 - 96 C280 (140k miles)
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Old 10-08-2006, 09:04 PM
Arthur Dalton Arthur Dalton is offline
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Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
EGR needs 12" of vac for flow test. Should also hold vac.
Also , check vac at plastic line before SOV valve.. that should have full engine vac. [ they are infamous for cracking]
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