Re: Truck Stalling Update!!

From: WOT or waiting at a Red (dakatack@home.com)
Date: Sat Feb 03 2001 - 13:44:05 EST


Guys

What about by passing the CCM (comfort control module) and controlling the
compressor directly from a switch in the cab.

Patrick O'Day

----- Original Message -----
From: "Ronald Wong" <ron-wong@home.com>
To: <dakota-truck@buffnet.net>
Sent: Saturday, February 03, 2001 9:54 AM
Subject: RE: DML: Truck Stalling Update!!

> Great explanation Bob. Problem with intermittent symptoms is you gotta
have
> continuous scanning or just wait until the part fails entirely. Pain in
the
> rear. With our technology today one would think our trucks would be a lot
> smarter than that. Unfortunately, still playing catch up.
>
> One good example of that. The 2001's have the AC controls that have a
> separate button that turns the AC off and on. That allows you to use any
> combination of vents and still run the AC. So I figure, hey, that's what
I
> want. Since 2000 controls are vertical and the '01's are horizontal I
> figured I'd have to replace a portion of the dash to do it. No prob,
> right?! Wrong! Looking behind the dash on a 2001 and the AC controls,
> guess what? It's a mini-PCM in itself that controls interior climate.
That
> PCM plugs into the main PCM. Harnesses are all different. <sigh> Talked
to
> DC. Their answer: We want our trucks to have all the cushy comforts of
our
> cars. We're catching up. Hmmm....not if Schrempp has his way......:-(
>
> Ron
> 00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
> For modifications see my DML Profile (URL follows)
> http://www.twistedbits.net/WWWProfile/dakota/Kw9pV1EkFeOYY
>
>
> -----Original Message-----
> From: owner-dakota-truck@buffnet.net
> [mailto:owner-dakota-truck@buffnet.net]On Behalf Of Bob Tom
> Sent: Saturday, February 03, 2001 9:31 AM
> To: dakota-truck@buffnet.net
> Subject: Re: DML: Truck Stalling Update!!
>
>
> At 06:33 PM 2/2/01 -0600, you wrote:
> >Well I dropped my truck off at the garage this morning at 8am. Didnt hear
> >from them till 3pm, and the news wasnt too good. They didnt find a frigin
> >thing wrong with it. They guy said he analyzed it with his computer and
> >found not one thing bad. He said he let it run for close to an hour with
it
> >hooked up, and even took it out for a 50 mile trip on the highway and
roads
> >with an onboard reader hooked up and found nothing out of wack. It never
> >stumbled or died or acted up when he was driving it. Go figure! He
checked
> >everything he could and he was stumped that with everything I told him
the
> >truck was doing, nothing was coming up either with his inspection or with
> >the computer's diagnostic scan.
> >
> >The only thing he said was that the transmission was 'stack shifting' and
> >that acceleration was nothing like it could/should be. He said it is
> >shifting into 2nd at 8mph. Not good eh! haha.
> >He filled the truck up with gas for me and didnt even charg me the $45 he
> >quoted to have it analyzed or scanned. He said bring it back in if it
acts
> >up again. So atleast I am not out $45, but my confidence in my truck
still
> >isnt all that great. Maybe I will try replacing the crankshaft position
> >sensor for $40 and see what happens.
> >Kyle 93 Dakota 4x4 V6
>
> Kyle
>
> If your crankshaft position sensor was gone, your truck would generally
not
> start or it would crank over but not fire up. Also, if it's suspected
that
> this
> sensor were a candidate, it is most likely due to with its electrical
> connector
> (loose, broken wire, rust, etc.) rather than the sensor itself.
>
> I personally would have a fair amount of faith in the mechanic who
analyzed
> your truck judging from your description of what he did and the fact that
he
> admitted that he was stumped. It really sounds like one of those
> intermittent
> problems that is going to be hard to solve.
>
> Here are some of the common causes for stalling. I did not keep any of
your
> posts so keep in mind what you did in these areas (I know that you've done
> quite of bit).
>
> MAP SENSOR FAILURE SYMPTOMS: Poor running, stalling, light on dash
> A MAP sensor can be inaccurate, sending an incorrect voltage to the
> computer.
> If this voltage is still within the range of voltage the computer expects,
> a light
> or trouble code for the MAP sensor may not be set. Fords are particularly
> susceptible to this. problem.
>
> THROTTLE POSITION SENSOR FAILURE SYMPTOMS: Hesitation on quick
> acceleration (passing, "flooring it") , sometimes bad idle. May not
> illuminate
> light or set codes.
>
> The above three sensors along with the ECT sensor are considered
"essential"
> sensors. They or their circuits can make an engine barely run or not
> run. Other
> sensors make very fine adjustments to the afr and timing, and do not often
> cause a gross poor running condition. Because these "major" sensors can
> trigger fault codes in other "minor" sensors, it would be better to
analyze
> non-computer items, like wiring, coil, fuel injectors or fuel supply
before
> trying
> to trace down a code generated by a "minor" sensor.
>
> Bob
>



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