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Old 05-04-2009
b3kbruiser's Avatar
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I am: Chris McLastname
Join Date: Nov 2006
Location: DFW Area, Tx
Vehicle: 2007 Ranger XLT
Posts: 713
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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
I am: Brian Johnson
Join Date: Nov 2008
Location: Muncie, IN
Vehicle: 1990 Ford Ranger
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Couldn't hurt to try. Have you checked the IAC?
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Old 05-04-2009
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I am: David Woodworth
Join Date: Aug 2008
Location: Bow,WA
Vehicle: 2001 Ford Ranger 4X4 XLT
Posts: 207
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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
I am: Garett
Join Date: Feb 2007
Location: Matagorda County, Texas
Vehicle: 98 Ford Ranger Sport 4x4
Posts: 735
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This might help some, it helped me solve a similar problem.
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