2000 b5 a4 1.8t shuts off at low rpms or while driving and sometimes won't start back up.

Asked by Apr 26, 2013 at 08:02 PM about the 2000 Audi A4 1.8T

Question type: Maintenance & Repair

Upgraded turbo and fmic. Does it need to
be tuned for it to run right and also it idles
real rough and just shuts off. Help please.

7 Answers

99,235

Get the codes read to see where the problem lies. Upgrading the turbo without a tune will not shut the engine down. It won't run to it's full potential but it will run. If you know someone with a VAGCOM cable, you can get a real good look at the system functions.

99,235

Check in at AudiWorld.com and Audizine.com to see if someone with a diagnostic cable is near you.

I got the codes pulled cuz I am a mechanic at pep boys but I am not formiliar with Audi. Most the codes had to do with the bank 2 O2 sensor missing cuz I have a straight pipe on it.

3,220

Different injector orifices may be in order, or Switch it back.

What do you mean? Sry I might be reading it wrong

3,220

With a bigger turbo the air/fuel mix could be off. Need more gas with the more air.

Would a tune fix that?

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