[s-cars] Violent Deceleration Under WOT

[chris chambers]

Tim,

That was your ECU sensing what it thought was overboost, when it does
that it cuts off the fuel pump and the car decelerates NOW!

I had this same thing happen, it can be caused by a MAF that is either
defective, or has a corroded/dirty connection. Using electrical contact
cleaner I cleaned the MAF's contacts and the MAF cable's contacts.

You can read more here:

http://www.sjmautotechnik.com/trouble_shooting/20vboost.html#oboost

HTH
Chris


--- Tim Larson <timlars at gmail.com> wrote:

> After turning turning into the next lane today and pressing about
> three
> quarters of the way down on the throttle in third gear around 35 mph,
> I
> accelerated briefly til maybe 45 when the car experienced what felt
> like
> engine miss but much worse.  Then, just a few seconds later I
> accelerated
> hard from a full stop in 1st and at about 4k rpms the car felt like
> it hit a
> brick wall, snapped my neck forward, really nasty and unpleasantlike.
>  It
> actually felt like instantaneous full brakes.  There was no squel of
> the
> tires as if they had locked up either.  Tried it again after shutting
> the
> car off for a bit and it didn't happen anymore.  Just wondering if
> anyone
> else has experienced anything else like this.  Seems like something I
> should
> worry about, because I don't want to lay off that wonderful throttle.
> Thanks much,
> Tim
> '92 S4
> _______________________________________________
> S-CAR-List mailing list
> S-CAR-List at audifans.com
> http://www.audifans.com/mailman/listinfo/s-car-list
> 


Make April 15th just another day http://www.fairtax.org


__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com