Yup...fluctuating line pressures can cause those issues. If the trans
doesn't go into lock-up properly or can't hold the proper gear selection, it
will feel like surging or missing. Same on #2. Definitely sounds like it
on #3.
- Bernd
-----Original Message-----
From: Steve Preston [mailto:steveophonic@yahoo.com]
Sent: Wednesday, June 27, 2007 9:50 PM
To: dakota-truck@dakota-truck.net
Subject: DML: Engine or transmission? (Bernd,others)
What about slipping? Could a problem like the GPS,on
top of the other symptoms,cause the truck to feel like
a bad engine miss or surging under load? Here's a
"refresher" list: (Man,how history repeats itself!)
2003 Dak RC 2WD ext. cab 3.9L 42RE (38k miles)
1) Runs like it's missing really bad. Can't duplicate
the miss in Park at any RPM. I can drive the truck
over a bumpy road,and I swear it'll clear up for a
while. All kinds of power! Then it goes bad again.
2) When kicked into passing gear,TC will sometimes
lock about a second later.
3) Back off gas to get it to upshift to 4th,especially
on hills. Doesn't happen as bad on level ground with
moderate acceleration.
That's it! I'm not sure problems 2 and 3 are related
to 1. It seems to me that even when the Dak runs good
and strong (rare),the other two things still happen.
Not sure though.
Thanks! Steve P.
P.S. At least my 4.7 Dak runs good!
--- "Bernd D. Ratsch" <bernd@dodgetrucks.org> wrote:
>
> If the trans controller doesn't see the correct line
> pressure, all sorts of
> weird things can happen - mis-shifts, hanging
> shifts, no shifts, starting
> out in the wrong gear, incorrect OD lockup....
>
> - Bernd
>
> -----Original Message-----
> From: Steve Preston [mailto:steveophonic@yahoo.com]
> Sent: Wednesday, June 27, 2007 8:00 PM
> To: dakota-truck@dakota-truck.net
> Subject: RE: DML: Auto Tranny Shifting problems
>
>
> I thought the symptom with that was the transmission
> starting off in second gear? Actually,I believe
> that's happening too from time to time. You can
> floor
> it,and it just eases to a start. So maybe that's two
> votes for a bad GPS?
>
> Not that I have any idea about the subject,but it
> seems like people were having trouble five or six
> years ago on the list here regarding their truck not
> taking off in first,and that was the problem (I
> think).
>
> Thanks for the info,Bernd!
>
> Steve P.
>
>
> --- "Bernd D. Ratsch" <bernd@dodgetrucks.org> wrote:
>
> >
> > I'd be checking the line pressure of the governor
> > pressure solenoid. What
> > you described is a common issue with a failing
> > pressure solenoid.
> >
> > - Bernd
> >
> > -----Original Message-----
> > From: Steve Preston
> [mailto:steveophonic@yahoo.com]
> > Sent: Wednesday, June 27, 2007 6:42 PM
> > To: dakota-truck@dakota-truck.net
> > Subject: Re: DML: Auto Tranny Shifting problems
> >
> >
> > You mean it doesn't want to upshift? My work
> truck
> > (3.9 Dak 42RE) does that. Have to back off
> > (sometimes
> > WAY off) the gas so it can upshift to fourth.
> Seems
> > worse when hot,but that might just be a magnet of
> my
> > fignation. I think my fix is gonna be a flush and
> > filter change at Ma Mopar.
> >
> > Steve P.
> >
> > --- Dale Schultz <d.schultz@sympatico_NOSPAM_.ca>
> > wrote:
> >
> > >
> > > Hi:
> > > I have a 1998 with 318 and auto transmission.
> It
> > > has developed some shifting
> > > problem and as the temperature goes up the
> problem
> > > gets worst. In the winter
> > > the shifting seems fine for about the first 5 -
> 10
> > > minutes of driving. As the
> > > fluid heats up, I presume, the shifting point
> > seems
> > > to creep higher. From
> > > second to third I have to get the RPM up to
> about
> > > 3000 before it will shift and
> > > then it is quite abrupt.
> > >
> > > I had the fluid and filter changed at the dealer
> > > about 3 years (20,000km) ago.
> > > I changed the rad about a year ago (the tranny
> > fluid
> > > runs through the rad for
> > > cooling). The fluid level is fine when checked
> > > standing on flat ground, warm,
> > > running and in neutral.
> > >
> > > Any ideas?
> > >
> > > Thanks
> > > Dale
> > >
> >
> >
> >
> >
> >
>
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> >
>
>
>
>
>
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