weird idle

[poweradeTSI]

i have a problem in the morning my car idles between 1000-1500rpms and it fluctuates.when it gets warm it idles 900rpm-700rpm and it also fluctuates.it drives normally until i slow down and stop then engine wants to die out but it doesn't.anybody got any suggestions

 

[Michael Z.]

You may have a bad/unplugged ISC, or a boost leak somewhere. Check the ISC (located on the TB toward the firewall), and do a boost leak test.

 

[ddavisaf]

You may have a bad/unplugged ISC, or a boost leak somewhere. Check the ISC (located on the TB toward the firewall), and do a boost leak test.

I second that.

 

[Tsi_User]

My bet is that the problem is a boost leak. Usually when the idle drops down below normal and almost dies then you have a massive boost leak somewhere.

At least it should be an easy fix

 

[playitlouddsm]

Read this http://www.dsmtuners.com/forums/showthread.php?t=191137

 

[hellotbone]

Read this http://www.dsmtuners.com/forums/showthread.php?t=191137

See that link there's your answer. This guys a noob and I like him already

 

[poweradeTSI]

now my car starts to feel like fuel cut is coming on ? could it be my mas air.while im driving .

 

[ddavisaf]

Explain what you mean by fuel cut.

 

[Michael Z.]

now my car starts to feel like fuel cut is coming on ? could it be my mas air.while im driving .

Did you attempt to fix the boost leak or ISC? Forget about your assumptions, and address the obvious first. It will probably remedy all other problems you are having. A turbo car will run absolutely horribly with a big boost leak.

 

[ddavisaf]

Did you attempt to fix the boost leak or ISC? Forget about your assumptions, and address the obvious first. It will probably remedy all other problems you are having. A turbo car will run absolutely horribly with a big boost leak.

A turbo car will run absolutely horrible with any boost leak.
You just might not be able to tell. But your car sure will be able to.

 

[poweradeTSI]

i was full boosting couple days ago until the fuel cut started 3days ago.fuel cut comes on around 10psi

 

[ddavisaf]

Fuel cut meaning you just ran head first into a brick wall? Or it just starts bogging down and cutting out?

 

[poweradeTSI]

no boost leaks

 

[BOBS90TURBO]

I had a very similar problem once that took me weeks to figure, Check the intake manifold gasket, spray some carb cleaner around the intake at idle, if the idle changes any you need to pull the intake mani and replace the gasket.

 

[poweradeTSI]

pproblem solved my safc was cutting on and off causing my car to trip .i was using those stupid tap clips to hook it up and now just decided to solder it . thanks for the ideas.