Sluggish 8V92

[Mike]

I it is know this sounds simple but many of the DDEC problems are simply bad
grounds. Make sure they are good. There are not really any recurrring issues
with the DDEC II. It is a good unit but parts are no longer available. It can
however be replaced with a more current unit but requires changeout of quite a
few items. I had an issue with a DDEC I that sounds similar to yours and the
guys in our Detroit shop were able to do a workaround. I did get the list of
parts required to update the system and while I don't remember the costs I was
glad to not have to do it. Your best solution if it is not a ground or
connection issue is a used ubit. I don't know if a reman is available.

--- In WanderlodgeForum@yahoogroups.com, Markus Meyer wrote:
>
> Just make sure the replacement is a known good one.
>
> Thanks,
> Markus
>
> -----Original Message-----
>
> From: Jerry
> Sent: 29 Nov 2012 20:35:37 GMT
> To: WanderlodgeForum@yahoogroups.com
> Subject: [WanderlodgeForum] Re: Sluggish 8V92
>
> Air and fuel filters have been ruled out....he pretty much has it narrowed
down to a computer issue....the tech says he's got a used "DDEC II" that he is
going to install and see if that rectifies the problem.
>
> Has there been many issues with the "DDEC II"? Just wondering if this tech is
on the right track or is he just playing guessing games with me!!!
>
> He should be updating me in a few days. Jerry
>
> --- In WanderlodgeForum@yahoogroups.com, Ron Thompson wrote:
> >
> > Are you sure you don't have a reduction of your air supply. I have not
had a problem with my Series 60 diesel but I have had that problem with my
Kubota generator. The air supply filter is located low on the engine and on a
trip to Alaska on the Alcan highway there was a lot of really dusty highway
construction going on and my generator started lugging down and it turned out
that the filter had sucked so much dust that it clogged up and only a little air
was getting through it. Replaced the filter and the engine ran like a top
after that.
> >
> >
> > Ronald Thompson
> >
> > TEXAS
> >
> > 1995 Wanderlodge 42'
> >
> > --- On Wed, 11/28/12, Jerry wrote:
> >
> > From: Jerry
> > Subject: [WanderlodgeForum] Re: Sluggish 8V92
> > To: WanderlodgeForum@yahoogroups.com
> > Date: Wednesday, November 28, 2012, 12:16 PM
> >
> >
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> > Â
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> >
> > Well...it appears the tech jumped the gun on the "bad injector" being
the problem. He installed the new injector and it still does not fire on that
cylinder. He actually is saying now that when under a load, it appears to be
missing on more then just the one cylinder.
> >
> >
> >
> > Says he has to dig deeper to find out what's going on....this was a couple
of days ago, haven't heard anything new since then.
> >
> >
> >
> > I'm beginning to think it may be the "DDEC II"...or something else along the
electronic end. Jerry
> >
> >
> >
> > --- In WanderlodgeForum@yahoogroups.com, "Oene Pomper" wrote:
> >
> > >
> >
> > > What did you find out?
> >
> > >
> >
> > > >>> "Don Bradner" 11/9/2012 3:17 PM >>>
> >
> > > The HT755 is a 5-speed, but has 6 apparent/effective gears in terms of
> >
> > > rpm changing. When flooring mine from a stop, the gear shifts occur
> >
> > > approximately at:
> >
> > >
> >
> > > 0mph 1st gear
> >
> > > 18mph 2nd gear unlocked
> >
> > > 27mph 2nd gear locked
> >
> > > 36mph 3rd gear
> >
> > > 45mph 4th gear
> >
> > > 60mph 5th gear
> >
> > >
> >
> > > Upshifts occur at 2100rpm and drop to 1670rpm
> >
> > >
> >
> > > Don Bradner
> >
> > > 90 PT40 "Blue Thunder"
> >
> > > My location: http://www.bbirdmaps.com/user2.cfm?user=1
> >
> > >
> >
> > > On 11/8/2012 at 9:31 PM Julian Cane wrote:
> >
> > >
> >
> > > >How about starting at zero mph and go slowly to 50 mph counting how
> >
> > > times
> >
> > > >it shifts, and watch the tach for small drops in RPM's
> >
> > > >
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> > > >
> >
> > > >________________________________
> >
> > > > From: Jerry
> >
> > > >To: WanderlodgeForum@yahoogroups.com
> >
> > > >Sent: Thursday, November 8, 2012 9:14 PM
> >
> > > >Subject: [WanderlodgeForum] Re: Sluggish 8V92
> >
> > > >
> >
> > > >
> >
> > > >ÃÆ'‚
> >
> > > >Scott,
> >
> > > >
> >
> > > >That is interesting that you mention the transmission....it is
> >
> > > something I
> >
> > > >have suspicioned because that is how it seems when starting from a
> >
> > > stop.
> >
> > > >
> >
> > > >Is there any way to verify this? Would pushing "1" guarantee that it
> >
> > > is
> >
> > > >indeed in first gear? This has the allison 5 speed, not sure on the
> >
> > > >model, I think its something like a 745 or 755.
> >
> > > >
> >
> > > >Paul,
> >
> > > >
> >
> > > >We have an appointment to have it checked out Monday. Finally found
> >
> > > a
> >
> > > >tech in this area willing to work/check a 8V92.
> >
> > > >
> >
> > > >I will let you all know what they find.
> >
> > > >
> >
> > > >Thanks, Jerry
> >
> > > >
> >
> > > >--- In WanderlodgeForum@yahoogroups.com, "Jerry" wrote:
> >
> > > >>
> >
> > > >> I have a "1991 Bluebird Wanderlodge WB40" with a silver "8V92".
> >
> > > >>
> >
> > > >> Lately it has become painfully slow at accelerating from a dead
> >
> > > stop.
> >
> > > >It is getting to the point of being unsafe to attempt to merge into
> >
> > > >traffic.
> >
> > > >>
> >
> > > >> Once you get it rolling down the highway, it isn't so bad...I have
> >
> > > no
> >
> > > >problems maintaining 70mph.
> >
> > > >>
> >
> > > >> Turbo boost will show a bit over 20 for a max, but when
> >
> > > accelerating
> >
> > > >from a stop, boost is less then 10, and the rpm's just don't want to
> >
> > > rev
> >
> > > >up.
> >
> > > >>
> >
> > > >> When it is first started, when cold, it does not sound as smooth as
> >
> > > I
> >
> > > >thought it used to.....almost like it has a slight mis. Seems to
> >
> > > smooth
> >
> > > >out once it is warm.
> >
> > > >>
> >
> > > >> Bought it used with 160,000 miles, it now has a bit over 200,000
> >
> > > miles.
> >
> > > >The fuel and air filters have been recently serviced, but I have no
> >
> > > >knowledge of any past maintenance history.....so I don't know if there
> >
> > > are
> >
> > > >other issues that need to be looked at....ie: valve settings, fuel
> >
> > > >injectors, etc.
> >
> > > >>
> >
> > > >> Has anyone else had this issue, or have any ideas at what I may need
> >
> > > to
> >
> > > >check to help resolve this problem?
> >
> > > >>
> >
> > > >> Thanks, Jerry
> >
> > > >>
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> >
> > > ------------------------------------
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