Check engine light

[ac7880]

Wild guess: Is it cold and or wet at your location? Perhaps a
sensor on the Allison and or 8V92 needs cleaned/dried, and then di-
electric protected?

Dan
94 BMC 37'



--- In WanderlodgeForum@yahoogroups.com, "Steve & Kathy Enfinger"
wrote:
>
> 1991 8V92 DDEC II. "Check engine" light does not go out after 5
seconds
> when ignition turned on ... tachometer inoperative. Engine runs
fine
> but speed restricted to 37 mph (computer I assume). Problem is
> intermittent. After coach sits a few hours when the ignition switch
is
> turned on both the "stop engine" & "check engine" lights will go
out
> (normal sequence) & tach works & engine operation & speed are
normal.
> Then when switched off & re-started only the "check engine" light
comes
> on constantly ... "stop engine" light never comes on ... tach
inop ...
> speed restricted.
>
> I am suspect of a ground problem but don't have a clue where to
start
> the search. I'm also suspect of the DDEC II unit but want it to be
> something much more simple ($$$$).
>
> All fluids normal, no noises, leaks, or performance issues
when "check
> engine" light is off ... but as you can imagine ... 37 mph is very
> restrictive for most travels.
>
> Steve & Kathy Enfinger
> '91 WBSA PT40
>