DDEC

[erniecarpet@...]

In a message dated 5/23/2005 7:07:44 PM Central Standard Time,
jamiller@... writes:


>
> If you decide to buy a DDEC1 coach ('88 and at least one '89) it is a
> very good investment to go through the engine/transmisson.control
> wiring and grounds

Jeff- are you suggesting to remove the wiring and ground connections and
clean them? Thanks, Ernie


[Non-text portions of this message have been removed]

[Ernest Ekberg]

We looked at a coach that had the DDEC 1 over the weekend. Isn't this
number 1 prone to have some problems? Ernie-83PT40 in Texas, curious at
the moment

[erniecarpet@...]

Thanks, Jeff, appreciate your information. Ernie


[Non-text portions of this message have been removed]

[Jeff Miller]

The DDEC 1 is NOT a troublemaker by itself, but, ...
In a 15-year-old coach, electrical problems do crop up. If those
electrical problems include bad connections to the DDEC, or bad
electrical grounds on the engine where starting current can back-feed
through sensitive electronics, the DDEC can become a problem and so can
the ATEC.

The "problem" with the DDEC1 is that parts are difficult to find and a
complete upgrade of the system is expensive. I've heard some pretty
tall repair bills from a toasted DDEC1 module.

If you decide to buy a DDEC1 coach ('88 and at least one '89) it is a
very good investment to go through the engine/transmisson.control
wiring and grounds.

- Jeff Miller
http://www.wanderlodge.net
http://www.millercoachworks.com


--- In WanderlodgeForum@yahoogroups.com, "Ernest Ekberg"
wrote:
> We looked at a coach that had the DDEC 1 over the weekend. Isn't this
> number 1 prone to have some problems? Ernie-83PT40 in Texas, curious
at
> the moment

[Jeff Miller]

Check wiring connections, clean/repair as necessary.

New ground straps for the engine, transmission, and batteries is IMO
a good idea.

The transmission control is grounded at the dash, transmission is
grounded at the transmission. A long distance in the PT40 and prone
to ground loops and noise. It is IMO a good idea to run a dedicated
ground either from the transmission ground point, or to ensure that
the copper ground buss is excruiatingly well connected at the rear
and use a dedicated ground wire from the copper ground buss.

- Jeff Miller
http://www.wanderlodge.net
http://www.millercoachworks.com


--- In WanderlodgeForum@yahoogroups.com, erniecarpet@a... wrote:
> In a message dated 5/23/2005 7:07:44 PM Central Standard Time,
> jamiller@i... writes:
>
>
> >
> > If you decide to buy a DDEC1 coach ('88 and at least one '89) it
is a
> > very good investment to go through the engine/transmisson.control
> > wiring and grounds
>
> Jeff- are you suggesting to remove the wiring and ground
connections and
> clean them? Thanks, Ernie
>
>
> [Non-text portions of this message have been removed]