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Ronny M	Posted I wonder if anyone could help me with my 1999 Ponatic Montana. 3.4 litter engine. I get a code P040 I have replaced the EGR Valve What else do you think could cause this? I sure would appreciate some help. Thanks Ronny M
	Posts: 2 | Location: Virginia | Registered: 06-07-09

Walks On Water Platinum Enthusiast	Posted Hide Post First, welcome to our "Pool" of friends and helpers. I would like to know what the code P040 states in the book that came with the code checker or don't you have the code checker?
	Posts: 1621 | Location: Cleveland, OH. US of A | Registered: 06-03-02

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DorianGreyed Site Administrator	Posted Hide Post Posted in a new thread - 06-08-09, 04:16 PM Ronny M 1999 Pontiac Montana The code I get is P0401A Sorry I missspelled Pontiac. I am writing this for Ron so when he gets home from work he will write more.I don't know if he has a code checker. Thank You for writing.I know he replaced the EGR valve. Visit DorianGreyed's Gifts
	Posts: 19561 | Location: Lincoln Place, Granite City, Illinois, USA | Registered: 06-03-02

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MrsS Diamond Enthusiast Site Administrator

Posted Hide Post Is the Electronic Vacuum Regulator (EVR) in proper order? What about the oxygen sensors? Any loose or bad vaccuum lines? Is the vehicle running rough? Hesitating to start? Stalling at idle? Slow to accelerate? If none of the above applies, it could be a false code- I found a few articles while looking for your code that talked about persistant problems with codes popping for no reason at all on several Pontiac products.

Posts: 2348 | Location: Western United States | Registered: 06-03-02

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