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Old 05-04-2009
b3kbruiser's Avatar
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Join Date: Nov 2006
Location: DFW Area, Tx
Posts: 713

Let's say you have a truck that may be idling rough because the EGR valve is stuck open, but you're not sure. To test and see if it is the EGR valve, could you just put a nice thick vicegrip on the line going from the valve to the intake and clamp it shut (assuming it's rubber), and see if it runs better? That way exhaust doesn't get into the air intake and cause the engine to stumble. Or would it be stumbling because it's creating a vacuum leak by keeping the valve open?

Anyway, I could very easily be wrong, I'm just musing.
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Old 05-04-2009
bjohnson238's Avatar
Join Date: Nov 2008
Location: Muncie, IN
Posts: 732
Couldn't hurt to try. Have you checked the IAC?
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Old 05-05-2009
davidw's Avatar
Join Date: Aug 2008
Location: Bow,WA
Posts: 207
just replace the DPFE sensor and the EGR and it will go away. $90 for EGR $ 45 for DPFE sensor. had the same prob
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Old 05-05-2009
schatten789's Avatar
Join Date: Feb 2007
Location: Matagorda County, Texas
Posts: 735
This might help some, it helped me solve a similar problem.
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