tstrahonja

Active Member
Apr 12, 2008
541
2
I hope i will attract attention of some vag com wizards...
I am having major idle problems, there is NO leaks.
Car sometimes starts fine, but in like 10 min idle becomes rough, vac goes from -0.9 to -0.6,5,4,3, unburnt gasoline smell...
What i have noticed is that by pressing throttle pedal values first go one way, then the other..

When car is not on

https://www.youtube.com/watch?v=NSGF_a9jBT0&feature=youtu.be

When engine is on, throttle drive angle sensor in block 010 sets to 0 instad of 4.7% when engine is off
Engine runs fine.
And then something happenes, engije starts to idle bad and drive angle sensor in block 010 changes to 1.5-2% in idle oposed to 0% when engine idles fine.
Any ideas?
Bad throttle pedal?
 
Check your throttle body is clean , then carry out throttle body alignment would be my first port of call
 
Well, nothing weird there, it does exactly the same as on my friends a3 1.8t wich works perfect.
 
Have you checked coolant temp in engine ecu , check that's reading fine ,
I think you may be getting too deep in to it and it's something silly like that or a plug/ coil
 
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coolant temp readings are fine, and i also changed CTS few days ago, green top of course
 
Voltage is ok, oscilating from 13.8 to 14.2 V
I think it is throttle pedal, throttle body, wiring problem..
Car was running ok for 10,15 minutes...and when i started to press throttle, after 1 or 2 minutes it just starts to missfire, vac goes bad and pressure drop between turbo and Tb appears...
I also have to inspect MAP sensor...