[s-cars] HELP!!!! boost problem still - fault code 2231

[chris chambers]

Gentlemen,

I have discovered I am getting fault code 2231, which according to
SJM's list is:

2231 (Blink Fault Code), VAG1551/2 Fault Code Number 00533 Idle Speed
Control, Idle speed adaptation limit exceeded, Sticky ISV, air leak

Now this car idles lower than my wife's S4, could the code be a
coincidence or is there something that can rob me of boost and cause
this code?

Thanks for all input!
Chris




--- chris chambers <fastscirocco_2000 at yahoo.com> wrote:
> gentleman,
> 
> I am frustrated because I can't track down a boost problem.
> 
> Patient is a 93 S4, with RS2 FI, RS2 em, RS2 maf, innovative turbo
> "RS2
> turbo", Vmap, and Uncle bob's RS2 software.
> 
> Car runs fine but turbo doesn't start pulling until past 4k rpm.
> 
> I have checked the water trap, line to water trap, all boost hoses,
> MAF
> to Turbo inlet hose. I can't find a problem anywhere. I pressure
> tested
> and didn't find any leaks. Caveat on the pressure test, the custom
> turbo has a larger inlet than the stock so it's hard to get rid of a
> leak there.
> 
> For some reason the Maf to turbo hose has an oily film inside it.
> Boost side "turbine" spins fine, nothing found in the motor oil.
> 
> 
> I am at a loss and could really use some advice on what else to
> check.
> I don't have a boost gauge, but am seriously considering getting one
> to
> help proceed with diagnosis.
> 
> 
> HELP PLEASE!!!!
> 
> Thanks
> Chris
> 
> "When you see a rattlesnake poised to strike, you do not wait until
> he has struck before you crush him." ~ Franklin D. Roosevelt
> 
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"When you see a rattlesnake poised to strike, you do not wait until he has struck before you crush him." ~ Franklin D. Roosevelt


		
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