andrew.tt

Hey guys. I spent this morning swapping parts.

I had been getting a 17579 DTC for the "throttle angle sensor" - it came along with limp mode and EPC/CEL lights. In short, it sucked and was pissing me off. I tried cleaning the throttle body and the contacts - but, nothing worked. So I bought a used throttle body and gas pedal on ebay for a total of $100. The 17579 code generally points to a bad TB, but I had tried a different one in there and got the same code. Some people have also said a bad MAF can trigger this, but mine is new. Lastly, the pedal potentiometer can cause the angle code - so that's where I am now.

Here's the side to side. New (used) TB on the left. I cleaned it really good with some gumout TB cleaner. I also cracked it open and cleaned the contact points with electrical cleaner.
<img src="http://www.squarewave.com/army/andrew/ttStuff/tb_fix-006.jpg">

Opened for cleaning.
<img src="http://www.squarewave.com/army/andrew/ttStuff/tb_fix-001.jpg">

<img src="http://www.squarewave.com/army/andrew/ttStuff/tb_fix-002.jpg">

New one in place.
<img src="http://www.squarewave.com/army/andrew/ttStuff/tb_fix-007.jpg">

On to the gas pedal.
<img src="http://www.squarewave.com/army/andrew/ttStuff/tb_fix-004.jpg">

All back together.
<img src="http://www.squarewave.com/army/andrew/ttStuff/tb_fix-003.jpg">

Cleared the codes with VAG-COM and did a throttle body alignment. Drove around a bit and gave it hell. No codes came back, but only time will tell.

Stumpthumper

Looks like you did a good job. Sorry I couldn't be there to help. Whose the nurse with the rubber gloves holding the TB?

andrew.tt

served.