Engine & Tranny problems 2

[ronmarabito2002]

Good advice. I wish I was at home to save the cost of the high labor
in the shop.

R.E. (Ron) Marabito, Dallas, TX 92WB40

--- In WanderlodgeForum@yahoogroups.com, "Chuck Wheeler"
wrote:
>
> Ron, agree with Greg and would want to find the problem BEFORE a
replacement
> the ECM is replaced. To pull that kind of heavy current there is a
problem
> on one of the DC busses. If my memory is correct you recently did some
> alternator work. If so start there, check each alternator output
> independently, if they are good go around the coach and check all DC
items
> especially chargers, inverters, connection between the generator
12vdc and
> the main bus. Inspect as much as possible. I would expect to see or
> smell something.
>
>
>
> - Chuck Wheeler -
>
> 82 FC 31 SB
>
> Fort Worth, TX
>
> _____
>
> From: WanderlodgeForum@yahoogroups.com
> [mailto:WanderlodgeForum@yahoogroups.com] On Behalf Of Gregory OConnor
> Sent: Monday, April 23, 2007 11:59 PM
> To: WanderlodgeForum@yahoogroups.com
> Subject: [WanderlodgeForum] Re: Engine & Tranny problems 2
>
>
>
> Ron, Often overlooked by class 8 repair shops are the high amp high
> discharge /recharge inverter drawn powersource on a motorhome. The
> uncommon factors sometimes reveal possible conclusions. I would pull
> all 11 batteries (disconnect) and install one proven battery at the
> engine start bank to continue the test. The Carvers had wierd
> problems that proved to be bad batteries. I hope it is somthing
> easily correctable.
> GregoryO'Connor
> 94ptRomolandCa
>
> --- In WanderlodgeForum@
> yahoogroups.com, "ronmarabito2002"
> wrote:
> >
> > I had to pull into Stewart & Stevenson in Albuquerque with engine
> > power problems and shift problems. It all started after we left
> > Dallas yesterday. I had a sudden 170 amps and 10 volts, followed by
> > total loss of 12 v power to instruments, radio, etc... By the time
> I
> > was off the road, the power was back. I then noticed a lack of
> power.
> > Pulled some minor grades of 2 or 3% with a drop in speed to 50 mph
> at
> > full throttle.
> >
> > Nursed the unit in to Albuqerque this morning. Had a fuel gage
> > intermittent that went from normal to full peg on full. When
> making a
> > hard left turn, transmission check light would flash and beep.
> >
> > S & S did a power check and found at full throttle, engine could
> only
> > make 1900 rpm. When backed off, the rpm went up to 2200. Just the
> > opposite of normal. They are very suspect of the DDEC2 at this
> point,
> > but are trying to rule out everything else first. Changed air
> filter,
> > they were started on a fuel system check when I left for dinner. I
> > had checked all the connectors this morning and they were fine.
> Could
> > not trouble shoot because I have no diagram of those circuits.
> >
> > I know the grounds on the alternators and engine to chassis are
> fine.
> > Not sure about any others, but they are checking them.
> >
> > I'm convinced that whatever caused that electrical anomoly
> yesterday,
> > damaged the ECM and it will probably have to be replaced. $$$$
> >
> > Let you know more tomorrow.
> >
> > R.E. (Ron) Marabito, Dallas, TX 92WB40
> > Currently in the shop in Albuquerque, NM
> >
>
>
>
>
>
> [Non-text portions of this message have been removed]
>