TT (Mk1) Discussion Discussion forum for the Mk1 Audi TT Coupe & Roadster produced from 2000-2006

flashing CEL... please help.

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Old Jan 28, 2005 | 06:05 PM
  #1  
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Default flashing CEL... please help.

...under WOT the car hesitates and stutters. this has been happening all week with sustained temps below freezing. This morning it threw a bank 1 catalyst code (which is odd because I changed the pre-cat o2 sensor 10k miles ago)

On the way home tonight I got a flashing CEL under WOT ... I let off the gas and the CEL eventually stopped and went out.

VAG reveals this...

16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-00 - -
16686 - Cylinder 2 Misfire Detected
P0302 - 35-00 - -



any ideas?
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Old Jan 28, 2005 | 06:27 PM
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Default possible coilpacks? check your plugs to see if anything is visible...

like rich or lean condition on the plugs. but it sounds like a coilpack issue.
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Old Jan 28, 2005 | 06:34 PM
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Default I got a flashing CEL when >>>

i was driving back from PA in the mother of all rain storms...i think i built up some condensation after idle...car stumbled hard..CEL flashed then cleared. Misfire error as well...

New MAF went in and all was well.

Do you leave your car indoors in a warm environment?
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Old Jan 28, 2005 | 06:42 PM
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Default car is garaged, but not warm.

it's been doing this hesitation all week. only tonight has it thrown codes... and this is the 1st CEL i've seen in a long time. and i've never seen one flash before!

only happens under wot.
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Old Jan 28, 2005 | 06:42 PM
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Default

are the cyclinders left to right ... 1-4?
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Old Jan 28, 2005 | 06:50 PM
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Default I like bills suggestion of checking your plugs>>>

see what kinda shape they are in...then coilpacks....
i was thinking if you had a condensation problem in some way it would have been similar to my experience....
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Old Jan 28, 2005 | 07:23 PM
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Default I ALWAYS get cel's at the beginning of winter - cold, damp >

condensation. Seems everyone here does, but never a flashing. Yours sounds like coilpack - thats the ONLY time I ever got one, and there was a recall on them, fyi.
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Old Jan 29, 2005 | 04:09 AM
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Default

VAGcodes should tell..probably not due to cold..tempermental cars..big bore USA next
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Old Jan 29, 2005 | 05:37 AM
  #9  
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Default thanks guys. one more thing >>

do you tthink it's odd that I had felt the harsh stutter all week but only got the CEL and the dtcs last night? do you think there is a threshold for tripping off these things?
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Old Jan 29, 2005 | 05:41 AM
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Default in my case, yes. I'll get the stutter, sometimes cel, sometimes not >

I'd go for a combination of condensation/moisture and now just maybe c-p; have you tied it to a fillup, or to an empty tank, btw?
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