EGR valve chugga chugga - MustangForums.com

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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

EGR valve chugga chugga

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Old 11-07-2003, 05:39 AM
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johnc
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Default EGR valve chugga chugga

My '84 5.0 w/ 5spd (over 190k miles on it) has a slow speed stumble that goes away when I pull the vac. line to the EGR valve. The valve is a type that needs more vac. than my hand pump can pull (IE-not possible to bench check) The car had the valve replaced last December during a smog test, and the car passed a change of owneremissions test about a month ago. How do I know if a new valve w/n do the same thing? Could the hi-mileage engine just be having problems making the right amount of vacuum ?
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