# Problem with my car // audi a1 2011 1.4t

**URL:** <https://community.cartalk.com/t/problem-with-my-car-audi-a1-2011-1-4t/107790>\
**Category:** Maintenance/Repairs\
**Tags:** audi, 100\
**Created:** [September 14, 2017, 5:35pm UTC](https://community.cartalk.com/t/problem-with-my-car-audi-a1-2011-1-4t/107790 "2017-09-14T17:35:49Z")\
**Posts on this page:** 5\
**Page:** 2

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**Author:** ![oldtimer-11](https://avatars.discourse-cdn.com/v4/letter/o/e79b87/32.png) [@oldtimer-11](https://community.cartalk.com/u/oldtimer-11)\
**Post date:** [September 15, 2017, 2:15am UTC](https://community.cartalk.com/t/problem-with-my-car-audi-a1-2011-1-4t/107790/21 "2017-09-15T02:15:32Z")

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He could have a sticky throttle body, I would try cleaning that.

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**Author:** ![ok4450](https://avatars.discourse-cdn.com/v4/letter/o/e9bcb4/32.png) [@ok4450](https://community.cartalk.com/u/ok4450)\
**Post date:** [September 15, 2017, 5:31am UTC](https://community.cartalk.com/t/problem-with-my-car-audi-a1-2011-1-4t/107790/22 "2017-09-15T05:31:20Z")

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I assume this model uses a drive by wire throttle body. Maybe the PCM is causing the TB to go haywire. Since the pics of the exhaust system shows a seriously cobbled togther exhaust pipe I have to wonder if the exhaust still has any 02 sensors in it and/or what else is missing in the engine management system.

The homemade exhaust appears to be much larger than stock and based on the appearance I wonder if the OP is trying to gain more power by increasing the size of the pipe. Sure looks like a lot of unneeded work IMO.

It’s also near impossible for me to translate some of that into a language I can understand.

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**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\
**Post date:** [September 15, 2017, 6:05am UTC](https://community.cartalk.com/t/problem-with-my-car-audi-a1-2011-1-4t/107790/23 "2017-09-15T06:05:10Z")

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> [@GeorgeSanJose](#):
>
> The only way the engine can rev with the pedal released is if air is getting into the cylinders bypassing the throttle valve. Check for vacuum system leaks.

Or if pressure remains in the manifold after the throttle is closed. Without information about the modifications one can only imagine that the by-pass valve was replaced with a blow-off valve that is causing the abnormal sounds. Also if improperly installed/adjusted will cause performance problems.

The exhaust system modification may be causing a delay or slow reaction from the turbocharger. I have seen a number of cars that were modified to go slower, unintentionally.

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**Author:** ![sgtrock21](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/sgtrock21/32/246_2.png) [@sgtrock21](https://community.cartalk.com/u/sgtrock21)\
**Post date:** [September 15, 2017, 4:55pm UTC](https://community.cartalk.com/t/problem-with-my-car-audi-a1-2011-1-4t/107790/24 "2017-09-15T16:55:57Z")

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I’m guessing pot holes and speed bumps for pits and bumpers or just a demented troll laughing at us. If OP was serious why would they not use one of the many translation sites?

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**Author:** ![BillRussell](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/billrussell/32/3179_2.png) [@BillRussell](https://community.cartalk.com/u/BillRussell)\
**Post date:** [September 15, 2017, 5:31pm UTC](https://community.cartalk.com/t/problem-with-my-car-audi-a1-2011-1-4t/107790/25 "2017-09-15T17:31:04Z")

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> [@sgtrock21](#):
>
> demented troll

I’ll go with this interpretation.

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