Series 60, DDEC 4, Check engine light

[David Brady]

Thanks you'll for your help. I just spoke with an S-60 mechanic at
Transwest Trucks in Commerce City, Co. He said that the overspeed
happens when the intake runner is not building enough pressure to
limit turbo speed. Possible causes are:
1) bad intake manifold gasket,
2) leaky intake hose(s),
3) loose hose clamp(s),
4) leak in the intake charge cooler.

I'll pay them a visit this week for a diagnosis and will keep you posted.

Thanks,
David Brady
'02 LXi, CO

Kurt Horvath wrote:
>
>
>
> These manuals may help
>
> http://www.detroitd iesel.com/ Support/On-
> <http://www.detroitdiesel.com/Support/On->
> Highway/Manuals/ Application_ and_Installation /Series_60/ Series_60_
> 2007_
> AI_7SA717.pdf
>
> http://www.detroitd iesel.com/ Support/On-
> <http://www.detroitdiesel.com/Support/On->
> Highway/Manuals/ Application_ and_Installation /
>
> Kurt Horvath
> 95 PT-42
> 10AC
>
> --- In WanderlodgeForum@ yahoogroups. com
> , "Richard Gideon"
> wrote:
> >
> > David: A quick search of the DDEC III/IV guide below will show
> > connector pinputs and sensor locations... if this will help great,
> > otherwise disregard.
> >
> > http://www.ddcsn. com/cps/rde/ xbcr/ddcsn/ 1-SECM-03- 03.pdf
> <http://www.ddcsn.com/cps/rde/xbcr/ddcsn/...-03-03.pdf>
> >
> > Dick Gideon
> > 1989 35FC
> > Rolla, MO
> >
> > --- In WanderlodgeForum@ yahoogroups. com
> , David Brady
> > wrote:
> > >
> > > Folks,
> > >
> > > On my way up Vale Pass, near the Eisenhower Tunnel, my check
> engine
> > > light came
> > > on and my DDEC displayed:
> > >
> > > PID 103, MID 128, FMI 1
> > >
> > > Which decodes to "turbo speed sensor low". I'll take it to the
> > local
> > > Detroit Service
> > > Center here in Denver, but in the meantime, does anyone have an
> > idea of
> > > what this
> > > could be?
> > >
> > > Thanks,
> > > David Brady
> > > '02 LXi, CO
> > >
> > >
> > > --
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> > > Version: 7.5.524 / Virus Database: 270.6.21/1674 - Release Date:
> > 9/16/2008 8:15 AM
> > >
> >
>
>
> ------------------------------------------------------------------------
>
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> Checked by AVG.
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8:15 AM
>



--
No virus found in this outgoing message.
Checked by AVG.
Version: 7.5.524 / Virus Database: 270.6.21/1674 - Release Date: 9/16/2008 8:15
AM