Thread: EGR Valve
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Old 03-06-2002, 08:19 AM
Arthur Dalton Arthur Dalton is offline
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Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,768
If that car has an egr switch/over valve, check the vent on the valve for blockage.
When a sw/o valve is de-energized, the vent lets air back into the vac line. If it doesn't, the egr can not pull back to the closed posistion because of the vac. holding in the line.
[ kind of like when you hold your finger over the tip of a straw and pull liquid when lifting it.]

That goes for most switch/over valve set -ups.
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