I've got the PCM pinouts from '97-'04 (and some '05). The TQ Sense wire is
only present on the 2000+ 3.7/4.7/5.7L engines with the 45RFE and 545RFE
transmission. (Didn't look at the Durango PCM though.)
3.9/5.2/5.9L engines do NOT have this wire. (You can find the TQ management
feature in the DRB-III but there's nothing you can do about it with the
stock "Super Cards" that come with the scanner (reprogramming).
My bet is the fuel and timing curve for those with modified engines
(especially bogging right out of the hole). Easiest way to give an example
of how the timing effects the launch is with an old system I was running
(Superchips ICON). When the timing curve was left at "stock" out of the
hole, it bogged slightly (even with the S/C). Once I changed the curve to
give me a little more out of the hole and then relax it over the upper RPM
band - no more "bog".
- Bernd
-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Bob Mankin
Sent: Saturday, November 22, 2003 12:15 AM
To: dakota-truck@dakota-truck.net
Subject: RE: DML: Torque management-4.7l auto
How does one "find" that they have TQ management?
> Therefore, if you have Tq Management, you WILL bog off the line if you
> launch hard with the experiences I've had, seen, and heard of on the
> 318/360 trucks. What I've found it to do is take the timing advance
> to 0 degrees at the "bogging" point. Once the transmission is up and
> moving it will put the timing back into it.
Timing to zero???? The only person I've seen attempt to document this
converter phenom with a DRBIII was Travis Mock and he was talking something
on the order of 4 degrees retard. What you are suggesting is along the lines
of 30+ degrees. BTW, Travis ran some 12.3ish ETs in the heat of Phoenix with
a '99 controller that supposedly had this "TQ management problem" and he had
respectable 60's too. Again, I think the issue is overblown.
The idea that some trucks have it and some don't just feeds the rumor mill.
It is HIGHLY unlikely that you would see such a major PCM subroutine flashed
into some 360 trucks, but not others, especially if you're talking about a
given model year. Less timing or the "death flash" everyone points to, OK.
But major program mods like that are not likely.
If you've got a FSM for your truck, look up the connectors on the PCM and
see if there is a torque management wire in the harness. Then verify if that
wire is physically there on your truck. That would be a start. My '01 does
have the signal wire, but I don't know that all Gen IIIs did. But even with
the wire, that's no assurance that the feature is programmed or enabled in a
given controller.
Bob
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