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

Total, momentary power loss with 3.2 . . .

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Old Sep 17, 2007 | 09:01 AM
  #1  
Drollomite Man's Avatar
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Default Total, momentary power loss with 3.2 . . .

Have had several instances now where my 3.2 will completely lose power for a beat or two, then resume acceleration. This is not the typical 3.2 pause or hesitation while the DSG decides what to do, but a very sudden drop-off for a second or two. There's absolutely no response to the accelerator during these "blackouts," unlike the usual times when the car is simply slow to downshift but still feels connected to the accelerator. These incidents are very intermittent, and the dealer can't find anything amiss. Anyone else have similar experiences?
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Old Sep 17, 2007 | 09:26 AM
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Default The people that can help you will need more info >

is your car stock, etc...
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Old Sep 17, 2007 | 09:54 AM
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Default Re: The people that can help you will need more info >

Stock '05, 33k miles. In all other respects, the DSG seems to perform as others have described.
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Old Sep 17, 2007 | 10:23 AM
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Default Does vag-com say anything?

does it happen in low speed or high speed? When the power drops, does your engine rpm changes at all?

I don't remember having anything like that on my car.
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Old Sep 17, 2007 | 10:49 AM
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Default for me this was brake switch failure

I had that happen once, just like you describe. I had noticed some subtle throttle hestiations previously, but then the throttle just cut out, without stalling, and this lasted for a couple seconds before kicking-in. Immeadiatly after that occurance, my brake lights were on constantly (even when the car was off), and acceleration was weird to say the least, it sort of hesitated a bit then kicked-in harshly, but I was able to drive the car to the dealer. Turned out the brake switch was bad, which makes DSG think you have the brakes on and thus it acts stangely. The dealer replaced the switch and it has been fine ever since.
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Old Sep 17, 2007 | 11:15 AM
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Default

Oxygen sensors? Had this problem with A3 3.2
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Old Sep 17, 2007 | 12:01 PM
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Default That's what the dealership suspected, but mine's ok . . .

perhaps I'm experiencing signs of impending failure. The symptoms are identical to what I felt. The brake switch is such a cheap part, you'd think the dealer would just go ahead and replace it.
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Old Sep 18, 2007 | 09:20 AM
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Default could be dangerous, that's for sure

the brake switch is a part that should be over-built from the start, but I suspect it's from a part bin. at least with dsg, failure could cause a serious accident, such as if power loss occured pulling out into a gap of moving traffic. I'm not sure if the new one that was installed was improved, or is just as prone to failure, but this type of issue causes lack of confidence in the car.

On the other hand, I've had few other problems (mostly rattles and minor annoyances, plus an early issue with the dealer-installed tracking system shutting down the car). DSG is still going strong at 35K.
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Old Jan 27, 2022 | 04:25 PM
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Default

I had both EGT's fail. Replaced the passenger side EGT(easier) and ran jumper wires from the passenger sensor to the driver side wiring to the computer. Net, one good sensor fed both sides to the computer. Putin will resign before this kluge fails and I saved $$$.
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Old Jan 27, 2022 | 05:52 PM
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Sounds like a crank position sensor going bad. My 2.7t S4 would do the same thing. For me it kept getting worse until the car would stall and not restart for 10-15 minutes. Check it with a vag com.
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