07 A4 3.2L P0172 rich code

   #101  

Captkrunch

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Please make another one autoscan, after Your visit to dealers garage. Better do it twice - clear all faults, make a testdrive and do a new autoscan. Just to exclude faults stored while testing at dealers.

Hi MartinsX, after visiting the dealer, I was told that "yeah your car runs great! It has a P0172 and N30 contribution balance / fault on injector 1 but it runs great! That will be 150$" I knew it was going to be like that but I didn't know where else to turn.

The injector was replaced a while back so I don't know why I would still see that error.

Thanks all for replying!
 
   #102  

Captkrunch

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Do you have to relearn the IMA on the injector that was changed?
 
   #103  

ivagp

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cam correlation mvb 90 something. log cold idle and 2500rpm. hot check after ten min drive idle and 2500rpm.
 
   #104  

Captkrunch

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Will do ivagp! What will this do??? I have the intake fully open right now and I have access to the injectors. Now is the time to try stuff :) THanks!
 
   #105  

ivagp

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have u looked here. http://wiki.ross-tech.com/wiki/index.php/16556/P0172/000370 Possible Causes
Fuel system
Excessive fuel pressure
Leaking or contaminated fuel injectors
Leaking fuel pressure regulator
Low fuel pressure or running out of fuel
Vapor recovery system
Air leaks after the MAF
Vacuum leaks
Improper seated engine oil dipstick
Stuck EGR valve
Oil overfill
Cam timing
Cylinder compression
Exhaust leaks before or near HO2Ss.
 
   #106  

ivagp

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Will do ivagp! What will this do??? I have the intake fully open right now and I have access to the injectors. Now is the time to try stuff :) THanks!

this is to check if cam timing is within spec. are u able to do a cylinder leak down test.
 
   #107  

ivagp

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i dont know maybe ur already their remove the valve covers and check the chain timing. do u have any chain noise, especially on a cold start
 
   #108  

Captkrunch

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Hi IVAGP :)

Ok i'll reply to your questions.

1. No cam noise whatsoever. Everything is tight and nothing is leaking.
2. Will do the MVB 90 as soon as I get home.
3. We already did the valve covers gaskets but the timing chain is actually at the back of the motor. but as I said, no leaks or no noise from there.

Thanks :)
 
   #109  

ivagp

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its in the nineties .3 and .4 should say something like actual and specified. make sure to look for both banks.
 
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