EGR Valve test?
#1
EGR Valve test?
I have been getting a CEL (Bank 1&2 lean) and a restricted performance light sometimes. The Restricted Perfm doesn't happen every day, and only comes on during short trips. It will stay on for 2-3 mins (sometimes upto 5) then go away. I can't think of what it could possibly be. My only thought is if the EGR is not working correctly some of the time.
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You and I breifly discussed this on another thread. I too was getting lean bank code, CEL that would come and go, exhaust leak sound (i.e., carb'd old school VW Beetle sound), and foul smell in the car (bothered passengers). I thought it was a stubborn exhaust leak that I couldn't find. Sounded like it was coming up high, not anywhere near the cats or anything. It ended up being the EGR valve that failed due to age/usage and got stuck open. Your symptoms sound like what I had to deal with. I wouldnt be surprised if you needed a new EGR. Good luck!
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It seems like the EGR valve should set a code if it's failed open? P0402 is for excessive EGR flow. Also possible the DPFE is bad but that's not reported hardly at all? No codes at all concerning the EGR?
I know other cars have several EGR codes for stuck open, stuck closed and not responding EGR valves.
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I know other cars have several EGR codes for stuck open, stuck closed and not responding EGR valves.
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Yes, there are 2 kinds of codes. Pending (such as P1000 or P1111) and codes. To become a code mostly a pending code needs to occur twice and under similar conditions. (The codes PDFs show this.)
You won't necessarily even get a pending code, as things have to be quite bad to get one.
If you've none, not even P1111, worry and report back.
You won't necessarily even get a pending code, as things have to be quite bad to get one.
If you've none, not even P1111, worry and report back.
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That will work! This should help you find the problem. When I was doing my car I used throttle body cleaner and it worked just fine.
Link http://jagrepair.com/images/AutoRepairPhotos/P0171.pdf
Link http://jagrepair.com/images/AutoRepairPhotos/P0171.pdf
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Michael Star (03-01-2013)
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