[s-cars] Miss & whoosh

[chris chambers]

Michael,

Are your boost hoses stock still, if so it's time to upgrade.

Sounds like a boost hose is either burst or popped loose.
I would check and see if the boost hose is still attached at the
outlet of your turbo. This can cause the woooshing noise to appear to
come from the passenger's side/glove box area.
I had this happen to me last summer.

The car is running rich because air flowing past the MAF isn't making
it to the engine. The ECU is supplying the fuel but a popped or burst
boost hoses is stopping the air from getting to the engine. 

HTH
Chris





--- Michael Bess <mlbess at optonline.net> wrote:

> OK diagnosticians; put you thinking caps on.
> 
>  
> 
> Patient: '95S6 w/MTM 1+ and RS2 EM
> 
>  
> 
> Symptoms: Started out as a minor stumble during acceleration under
> boost.
> Now I can hear a distinct "whooshing" sound while driving with boost
> obviously building under peddle to metal conditions, from 2500 rpm
> onward,
> which seems to come from the passenger side of the car, near the
> glove box
> area.  When whooshing is evident, car stumbles quite badly, black
> smoke seen
> in rear view mirror (Over-rich condition?).  If bring revs up with
> partial
> throttle only (no boost?), no such problems all the way up to 6000
> rpm.
> 
>  
> 
> WTF???  
> 
>  
> 
> Possibilities:
> 
> Blown off hose from ECU pressure sensor?
> 
> Bad coil, POS, plug?
> 
> Split in hose in intake tract?  (BTW how can I easily pressure test
> things;
> I remember seeing something a year or so ago?)
> 
> ???
> 
>  
> 
> TIA,
> 
>  
> 
> Mike Bess
> 
>  
> 
>  
> 
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> 


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