More on 'check engine' light

[Steve & Kathy Enfinger]

thanks Ralph ... I agree that the codes seem 'bogus' ... nothing
happened to cause fault codes ... short of not using the coach. I
just noticed that LEG 2 AC ampmeter on the generator gauges showed 40
amps with no load like a/c, water heater, etc. Traced it to floresent
lights in hallway (12 volt lights). I say again ... you gotta USE
these beast to keep all the 'gremlins' out of 'em. How does the 12
volt dc circuit feed back into the 110 volt ac gauges????

Steve & Kathy Enfinger
Newton, GA
'91 PT40 WBSA(with faulty light)

- In WanderlodgeForum@yahoogroups.com, "Ralph L. Fullenwider"
wrote:
>
> HI Steve:
>
> 16: Coolant level Sensor Voltage high
> 31; Engine break output open circuit or short to ground
> 32; CEL or SEL Short to battery or open circuit
> 43; Low Coolant
> 44: Oil or coolant high temp
> 64: No code
> 66: Engine knock sensor
> 68: Idle validation switch open or short to ground
> 85: Engine over speed
>
> Too many faults reported and this to my mind makes it the input 12
vdc
> opening and closing with a spike. The 12vdc is on the DDL plug to
the DDEC
> on pin H circuit 440. There is a circuit breaker located on the
back of the
> fire wall, have to trace it out, that supplies the 12vdc and it may
be
> faulty (known to happen) or you have a bouncing ground with is pin
A on the
> DDL circuit 150. I am thinking it is the connector corroded to the
12vdc
> that is reporting your problem and taking the engine to the default
rpm
> ergo; 37mph speed. The DDEC may be located at the bottom of the
back closet
> or on the top of the engine located center top near the back
compartment door.
>
> Safe travels,
>
> Ralph and Charolette Fullenwider
> 84FC35
> Ralph's RV Solutions, Duncan, Oklahoma
>
> At 01:25 AM 1/3/2007 +0000, you wrote:
> >Thanks for your suggestions. When the problem started I suspected
fuel
> >quality problems ... been holdin' out for lower diesel price for
way
> >too long. Fuel drained from Racor revealed chunks of algae ...
changed
> >both filters, put in Bio-cide, & $614 of diesel. Still get the
> >intermittent 'check engine' light on constantly which causes tach
to be
> >inoperative & speed to be resticted to 37 mph. Next time I switch
it on
> >the light will function properly & everything works normal.
> >
> >When the light works correctly & I read the DDEC II codes with
> >the 'test engine' switch I get 16, 31, 32, 43, 44, 64, 66, 68, &
85.
> >You'd think it was near death ... Cranks up & comes 75 miles
without
> >missing a stroke. Next morning all fluids are OK, cranks up &
comes 100
> >miles to home without any problems. Switch it off & back on
& 'check
> >engine' light stays on.
> >
> >The pattern when giving problems is: Initial turning on ignition -
> > 'stop engine' light does NOT come on momentarily but 'check
engine'
> >light stays on constantly. Tach doesn't work & speed limited to 37
mph.
> >
> >re: the question about me being an agronomist ... if I had $$$ I'd
hire
> >someone to fix the problem instead of trying to steal ideas from
> >you "master mechanics". naaaaa ... I'm in the seed cleaning &
> >distribution business. A "tinkerer" also ...
> >
> >Steve & Kathy Enfinger
> >Newton, GA
> >'91PT40 WBSA
> >
> >
> >
>