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at a loss guys - what are my next steps? >>

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Old 09-20-2006, 09:06 AM
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Default at a loss guys - what are my next steps? >>

i'm still getting the same code:

17579 - Angle Sensor 2 for Throttle Actuator (G188) Implausible Signal

it comes with the epc light and hard limp mode. the only fix is ignition off/on.

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

- is it possible this used throttle body i installed has the same issue as my original? do i try buying another one?

- could it be my boost machine? (this one is a stretch)

- the only thing left is the ecu. but why would it just have this one very specific problem? if my ecu was shot.. wouldn't there be other issues?

i'm looking for any ideas here. thanks.

old post below:<ul><li><a href="https://forums.audiworld.com/tt/msgs/1551055.phtml">https://forums.audiworld.com/tt/msgs/1551055.phtml</a</li></ul>
Old 09-20-2006, 09:09 AM
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Default Idea........

Can you try to test the voltages, while wiggling the connectors? Both at the ECU and at the TB? Perhaps something is making intermittent contact. If not, try another TB. I know mine worked fine.....
Old 09-20-2006, 09:21 AM
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Default There is a process in the Bentley for testing the angle sensors. Have you tried

that?
Old 09-20-2006, 09:23 AM
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Default Also, have you done a TBA?

I'd assume so, but thought I'd check.

Man, I love DBC.
Old 09-20-2006, 09:32 AM
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Default yep. doesn't show any problems. tested the voltage at the harness as well >>

no problems.
Old 09-20-2006, 09:33 AM
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Default

yep. all the time.
Old 09-20-2006, 09:34 AM
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Default good idea. the only thing that makes me think that's not it >>

is it's usually at low speeds - and it does not have to be rough road.
Old 09-20-2006, 09:42 AM
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Default check the wiring harness...

see if the insulation is cracked or melted. It might be shorting out and screwing up the signal.
Old 09-20-2006, 09:44 AM
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Default Another idea perhaps...when I removed the black cover from mine...

I noticed one of the metal wipers was not marking the graphite wheel as much as the other ones, so I bent it slightly, to apply more pressure to insure complete contact. Just a thought.
Old 09-20-2006, 10:08 AM
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Default See if these help, otherwise a new throttle body may be the best bet>>

http://www.audifans.com/pipermail/biturbos4/2004-November/003693.html

http://www.s4-mtm.com/images/Audi_S4_engine_english.pdf#search=%22Throttle%20Ac tuator%20(G188)%20Implausible%20Signal%22
(around page 40...happy reading!)
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