[Vwdiesel] *help! bucking & smoking*

LBaird119 at aol.com LBaird119 at aol.com
Thu Mar 25 20:19:22 PDT 2010


In a message dated 3/25/2010 5:07:55 PM Pacific Daylight Time, 
tadc at europa.com writes:

> Guys - if it were me I'd still take a look at the turbo hoses first.
> 
> My reasoning is thus- if the boost charge was leaking out, the ECU would 
> be
> delivering fuel based on the MAF reading (too much fuel, lots of smoke).
> *
> *
> *If you pull the MAF, it will default (if I'm not mistaken) to the MAP
> reading, which would actually be accurate (no pressure) so it wouldn't
> inject so much fuel.  *
> *
> *
> *In other words it would look like pulling the MAF fixed the issue, but
> really it would just mask the symptoms.  *
> 

  Good call Tad.  It'd have to be a hose that's "post turbo" to 
narrow it down.  Otherwise it wouldn't be pulling the higher 
air reading needed to "fool" the computer into putting in too 
much fuel.  
  Mine had a popped off hose when I got it.  Only thing I noticed 
was a surging and odd sound but the I only drove it a half mile at 
25mph that way.
   Loren


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