Bernd,is it okay to go aftermarket on these parts,like
Rockauto or someplace,or should I definitely stick
with Mopar parts? And do you happen to have the part
number for the updated solenoid from Mopar?
Thanks!
Steve P.
--- "Bernd D. Ratsch" <bernd@dodgetrucks.org> wrote:
>
> Best way to check the TPS is with an analog meter.
> The best DVOM's can't
> show a smooth swing as good as an analog meter can.
>
>
> It's a Governor Pressure Solenoid - not a sensor.
> Yes, we see them fail
> quite often on higher mileage vehicles. There is an
> updated solenoid that
> doesn't seem to cause the issues like the older
> ones. Replace the
> transducer as well.
>
> - Bernd
>
> -----Original Message-----
> From: Steve Preston [mailto:steveophonic@yahoo.com]
> Sent: Thursday, October 04, 2007 10:10 PM
> To: dakota-truck@dakota-truck.net
> Subject: RE: RE: DML: RE: Idle,now V6 issue again..
>
>
> Bernd,is it more likely to be the governor pressure
> sensor? The truck acts like something's confused
> when
> it craps out. The solenoid,I would think,wouldn't
> tend
> to cause rapid fluctuations,but a constant wrong
> pressure from time to time. Do you normally see one
> fail much more often than the other? If they always
> fail together,I guess I can change them both.
>
> BTW,the tps has always read smooth and linear on the
> scan tool,and meter. No intermittent spots.
>
> Thanks!
>
> Steve P.
> --- "Bernd D. Ratsch" <bernd@dodgetrucks.org> wrote:
>
> >
> > Ok...you just mentioned something that may very
> well
> > be the problem.
> >
> > Transmission doesn't shift unless you let off the
> > pedal - most common issue
> > is the governor pressure solenoid and transducer.
> > Only way to replace them
> > is to drop the pan. Once your in there, might as
> > well adjust the bands and
> > change the filter as well. If the line pressure
> > isn't correct (or has
> > erratic readings), it can cause the truck to
> "lurch"
> > or jerk back and forth
> > under steady cruising speeds.
> >
> > In some cases, the TPS can cause similar issues
> but
> > will not cause having to
> > let off the pedal to shift (that's line pressure
> > related).
> >
> > - Bernd
> >
> > -----Original Message-----
> > From: Steve Preston
> [mailto:steveophonic@yahoo.com]
> > Sent: Thursday, October 04, 2007 8:24 PM
> > To: dakota-truck@dakota-truck.net
> > Subject: Was: RE: DML: RE: Idle,now V6 issue
> again..
> >
> >
> > Thanks for the reply,Bernd.
> >
> > I have replaced the Map sensor,plugs and plug
> > wires,pcv valve,swapped pertinent relays (fuel
> > pump,transmission) with non-essential relays. No
> > change. Yesterday cleaned TB,and reset PCM. No
> > change
> > at all,except it holds steadier rpms at idle and
> > just
> > off idle.
> >
> > Still feels jerky under moderate to heavy
> > load,almost
> > like going over bumps. Today and yesterday it ran
> > really bad,Tuesday it did well a lot of the day.
> > (Same
> > weather,no gas fill-up,etc.) The Dak ('03) has
> > 52,000
> > miles,so I haven't replaced the cap or rotor,but I
> > did
> > inspect them very closely when I did the plug
> wires
> > in
> > August,and cleaned a little oxidation off all the
> > cap
> > terminals and "resprung" the rotor tip for a
> little
> > more pressure on the cap. No looseness or play in
> > rotor at all. Checked fuel pressure (49 psi) and
> > vacuum (let's skip that topic for a while - I
> think
> > it's good).
> >
> > Like I said a while back,the transmission doesn't
> > want
> > to upshift unless I back off the gas,and starts
> off
> > in
> > second gear a lot,so my next plan is to change
> both
> > governor sensor and solenoid,and change filters.
> > Hard
> > to believe the "missing" problem is transmission
> > related though,especially since the truck's issue
> > becomes severe with the air on,and since I smell
> the
> > cat under hard acceleration constantly.
> >
> > Whew! Windy post.
> >
> > I don't know where to go from here. Losing
> courage.
> > The only thing I can think to do is try to scope
> the
> > crank sensor while driving and see if I can verify
> > anything erratic with engine rpm. (The tach is too
> > damped to see quick response.)
> >
> > Thanks!
> >
> > Steve P.
> >
> >
> >
> >
> >
> >
> > --- "Bernd D. Ratsch" <bernd@dodgetrucks.org>
> wrote:
> >
> > >
> > > A slight film of oil in the intake is normal
> (PCV
> > > and crankcase breather
> > > working). If you don't have any oil use or
> > pinging
> > > (detonation)...you're
> > > fine.
> > >
> > > The 3.9L does have a rough idle - plenty of
> people
> > > have complained about
> > > it...it's just the nature of the beast (odd-fire
> > > V6). However, what about
> > > the plugs, wires, cap, and rotor? How old are
> > they?
> > >
> > > - Bernd
> > >
> > > -----Original Message-----
> > > From: Steve Preston
> > [mailto:steveophonic@yahoo.com]
> > > Sent: Wednesday, October 03, 2007 5:40 PM
> > > To: dakota-truck@dakota-truck.net
> > > Subject: Re: DML: RE: Idle
> > >
> > >
> > > I do not know what IAC steps means. But I took
> my
> > > throttle body off yesterday and cleaned it and
> the
> > > IAC
> > > hole and plunger,and I did the whole thing in
> like
> > 6
> > > steps! :) While I had it off,I shone a light
> down
> > > into
> > > the intake (this is on my 3.9 Workdak) and the
> > sides
> > > of the intake were oily. No puddles of oil on
> the
> > > bottom,but it did have an oily film. Is that
> > normal?
> > > The truck doesn't ping,and doesn't use oil,but
> > does
> > > it
> > > indicate an issue?
> > >
> > > The truck seems to idle better now,but it still
> > > misses.
> > >
> > > Thanks!
> > >
> > > Steve P.
>
=== message truncated ===
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