[Vwdiesel] *help! bucking & smoking*

[Tad]

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.  *

On Thu, Mar 25, 2010 at 2:32 PM, Bryan Belman <dieselwesty at yahoo.com> wrote:

> Great work James.
> Rolf, I second that, I would order that from IDParts.com
> I would not skimp on the MAF
> Bryan Belman, Pt. Pleasant, NJ
> 04 Jetta Wagon TDI PD, 100hp, 5sp -- running :)
> 92 Jetta 1.6 Eco-Turbo Diesel -- running :}
> 82 Diesel Westy 1.9NA -- running :)
> 70 Type 1 stock Beetle -- Not running :(
>
>
>
>
> ________________________________
> From: James Hansen <jhsg at sasktel.net>
> To: Rolf Pechukas <rbp at 4u2bu.org>; vwdiesel at vwfans.com
> Sent: Thu, March 25, 2010 4:18:45 PM
> Subject: Re: [Vwdiesel] *help! bucking & smoking*
>
> I would recommend our gracious site host.
> That's IDparts.com, no?
> You have to watch, the cheap ones have a high failure rate too.
> -james
>
> > -----Original Message-----
> > From: Rolf Pechukas [mailto:rbp at 4u2bu.org]
> > Sent: Thursday, March 25, 2010 1:46 PM
> > To: James Hansen; vwdiesel at vwfans.com; VW-TDI at yahoogroups.com
> > Subject: Re: [Vwdiesel] *help! bucking & smoking*
> >
> > James
> > u r a frickin' genius!
> > unplugged the MAF and ran 1000x better
> > problem solved
> > gonna order up a replacement - any idea where to go?
> > (thanks a million! seriously! I think this is about the 13th time uv
> > bailed me out!)
> > peace,
> > Rolf in MA
> >
> >
> > On Mar 25, 2010, at 3:15 PM, James Hansen wrote:
> >
> > > A dying MAF can run like absolute shit Rolf. A dead one usually just
> > goes to
> > > limp mode, but failure mode can vary.
> > > I have seen a car with what finally turned out to be dying MAF run as
> > you
> > > describe, was in a friend's Dad's 03 Jetta.  Not that I'm so smart,
> > but I
> > > diagnosed it as a dead MAF when he stopped by on the way to the
> > dealership.
> > > He lives an hour away, and stopped in for coffee on his way to get it
> > fixed.
> > > The shop disagreed with my meager efforts, dissed VCDS as useless
> > (yeah
> > > right), milked him for a T belt, timing, rebuilt injectors, THEN
> > replaced
> > > the MAF and it ran properly. He was some pissed, and IIRC, got the
> > injectors
> > > gratis eventually.  Car would smoke like a chimney, and generally run
> > like
> > > it was way late in timing.
> > > In VCDS, check your adaptation settings, and determine if the
> > adaptation has
> > > been lost as well.  If it is, there are some models that require a
> > very
> > > specific train of events to adapt.  Some do it just by driving, some
> > need
> > > you to jump through a couple hoops. If you have to jump through
> > hoops, get
> > > your court shoes on, 'cause it has to be done *exactly* as written
> > and is a
> > > real PITA. 05 Passat is an example of the PITA adaptation.
> > >
> > > Did the shop screw up the timing?
> > > Man, anything is possible. It's a world away from the alt belt, but
> > who
> > > really knows unless you were standing there puffing hot breath on the
> > tech's
> > > neck while he worked on your baby. Most are competent, some couldn't
> > install
> > > muffler bearings if their life depended on it.
> > > -james
> > >
> > >
> > >
>
>
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