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Old 12-21-2005, 06:32 PM   #3
katarn444 is on a distinguished road
Join Date: Mar 2005
Posts: 126
Default Re: Slight hiccup/stumble while accelerating under load

That is exactly what my bad EGR does. To test it on my 93 I plugged the vac line( which throws a code) and it works great. I am not sure if that indicates bad EGR or EGR solenoid. This only works on the older vac controlled EGR's.

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