P0172 code and erratic cruise. Still can not find what is causing it!

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May 28, 2009, 05:43 PM

#16

Cali2MDevo8

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Quote:

Originally Posted by r/ternie

i had the same issue.... I acutally had a huge leak on my turbine inlet gasket and my o2 housing gasket.

Explains why it was a bit laggy as well!

hhmmmm

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Sep 8, 2010, 06:09 AM

#17

vmrevo9

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did you ever figure this out?? i'm having the same issue!

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Sep 8, 2010, 12:29 PM

#18

joedr

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To all,

I sold my car but was able to sort the issue.

1. Replaced TB seals.
2. Replaced all Turbo related gaskets (Mani, O2 and Turbo)
3. Replaced all vaccum hoses
4. Re-checked and replaced all couplers.

The reason I swapped all of that was due to a boost leak test and since it was hard to find out were the leak was, I decided to buy all couplers/vaccum lines and swap all. Also, after a very close inspection and a friend of mine that it is more **** than I am for this type of things.... we found a small leak in two areas of the turbo assembly. We removed the turbo and re-assembled everything.

After that, I gained some substantial power (around 30 WHP from a base done on the same dyno.). The car felt a lot better and trims were in the spot.

Good luck!