[s-cars] Whacky Boost

[HoosierMP at aol.com]

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In a message dated 7/8/02 3:59:32 PM US Eastern Standard Time,
brucem105 at comcast.net writes:


>
> This sounds suspiciously like what happened to me at Virginia Int'l Raceway.
>
> My car was running at full song, then check engine light came on and boost
> dialed way back. Then it'd run again but same thing would happen.
>
> Check engine code was for cam position sensor, which we replaced but did not
> solve problem. Turned out to be broken key off of crank pulley, which made
> ECU not have timing references and it would keep retarding the timing as
> boost built, causing it to seem laggy, and then finally throw in the towel
> and flash the check engine light until I backed off.
>
> Please note that this problem took two and a half weeks to find, and cost
> nearly $500 in diagnostic charges (god bless my extended warranty). Even my
> super Audi mechanic was kind of stumped for a while, and went so far as to
> consult with other Audi tuners for opinions.
>
> Be careful....if more breaks, you could be looking at real serious engine
> damage. He was amazed I did not just break the whole motor. Change the
> timing belt while you're in there if that turns out to be the cause.
>
> Let me know if this was the problem...it'd be my first time helping someone
> find a real serious problem from my own experience!
>
> Good luck!
>
> Bruce
>

Interesting, the EXACT same thing my car did.  "We" thought the tooth sheared
because of previous interference.

Richard Sierra