It was the TQ converter. Posted the findings on a different post (P0300
issue).
- Bernd
-----Original Message-----
From: GMBlows GMBlows [mailto:gmblows@msn.com]
Sent: Saturday, June 28, 2008 8:53 AM
To: dakota-truck@dakota-truck.net
Subject: DML: RE: RE: RE: RE: Here's one for the other Experts on the
list...
Any updates?
Got Octane?.. is it possible that it is misfiring due to the ignition
advance at part throttle.
How does the computer tell that there is a misfire? maybe it is being
tricked by a bad reading somewhere else.
Is it possible the "feeling" is the computer pulling timing because
it thinks it's misfiring?
I'm no expert, but I think I slept at a holiday inn once.
----- Original Message -----
From: "Bernd D. Ratsch" <bernd@dodgetrucks.org>
To: <dakota-truck@dakota-truck.net>
Sent: Thursday, June 19, 2008 10:26 PM
Subject: DML: RE: RE: RE: RE: Here's one for the other Experts on the
list...
>
> I've reset the adaptives and adaptive numerator within the PCM as a test
> to
> see if it will relearn the miss or ignore it (relearned it). PCV is still
> brand new (and clean) and the O2's are well within the .2-.8v range
> (forward) - rear O2's are steady at .4-.6v.
>
> You can "feel" it if you really pay attention, but other than that - it
> drives respectively well.
>
> - Bernd
>
> -----Original Message-----
> From: Ray Block [mailto:BPracing@wowway.com]
> Sent: Thursday, June 19, 2008 9:07 PM
> To: dakota-truck@dakota-truck.net
> Subject: DML: RE: RE: RE: Here's one for the other Experts on the list...
>
>
> Dayum you're good! Ok, I'll admit I'm no expert on anything unless I've
> experienced it and solved it. But, for $hits and giggles, other than
> the
> code being set, how does the truck drive? Is it obvious there's a miss?
>
> You didn't mention PCV valve or O2 sensors. Are they good too? In the
> old
> days (carbs) a light throttle misfire usually meant lean condition or too
> much vacuum advance.
>
> Is the PCM just full of bull? Obviously I have no clue. ;-)
>
>
>
> > -----Original Message-----
> > From: owner-dakota-truck@bent.twistedbits.net [mailto:owner-dakota-
> > truck@bent.twistedbits.net] On Behalf Of Bernd D. Ratsch
> > Sent: Thursday, June 19, 2008 9:49 PM
> > To: dakota-truck@dakota-truck.net
> > Subject: DML: RE: RE: Here's one for the other Experts on the list...
> >
> >
> > Heheheh...checked those too.
> >
> > - Bernd
> >
> > -----Original Message-----
> > From: Ray Block [mailto:BPracing@wowway.com]
> > Sent: Thursday, June 19, 2008 8:38 PM
> > To: dakota-truck@dakota-truck.net
> > Subject: DML: RE: Here's one for the other Experts on the list...
> >
> >
> > The muffler bearings are dry and the blinker fluid is low. Next?
> >
> >
> > > -----Original Message-----
> > > From: owner-dakota-truck@bent.twistedbits.net [mailto:owner-dakota-
> > > truck@bent.twistedbits.net] On Behalf Of Bernd D. Ratsch
> > > Sent: Thursday, June 19, 2008 9:01 PM
> > > To: dakota-truck@dakota-truck.net
> > > Subject: DML: Here's one for the other Experts on the list...
> > >
> > >
> > > 2007 Dodge Ram 1500 - 4.7L FFV/545RFE - 19K miles
> > >
> > > P0300 - Multiple Cylinder Misfire - Active Code when driving (Goes to
> > > stored
> > > on next key cycle)
> > >
> > > The code trips while driving from 1900-2500rpm under light load -
> > Highway
> > > Cruising
> > >
> > > (1) Fuel Sample taken - good (no water and/or debris - ran through
> > filter
> > > to
> > > check)
> > > (2) Spark Plugs all in excellent shape - Gaps still at .040 - .042"
> > > (3) Coil's all firing properly with 8K to 20K volts (idle to 2500rpm
> > > 10%
> > > load)
> > > (4) Fuel Pressure: 59psi (Normal)
> > > (5) Compression at 150-155psi in all cylinders
> > > (6) Running Compression check: all within 2% of each other
> > > (7) Vacuum at 18" at idle - Normal
> > > (8) Software at current revision (checked against online database -
> > > PCM/TCM/TIPM)
> > > (9) Balancer straight - Checked with timing light and plate
> > > (10) Serpentine Belt has no high/low spots (Yes, that can cause
> > misfires)
> > > (11) Battery Charging Rate - 14.3v
> > > (12) Alternator at 70-80% Duty Cycle - Normal
> > > (13) Fuel Volume - Fills 1qt in about 30 seconds
> > > (14) LTFT Fuel Adaptives at +/-4 across all cells
> > > (15) STFT Fuel Adaptives at +/-2 (Combined +/-6 - Within normal range)
> > > (16) Misfire Monitor only detects the misfires at light load
> > > (17) Cam and Crank sensors have a clean pattern on the scope - no
> > > spikes
> > > or
> > > drops
> > >
> > > So, any ideas?
> > >
> > > - Bernd
> > >
> >
> >
>
>
>
>
>
This archive was generated by hypermail 2b29 : Mon Jul 21 2008 - 10:10:56 EDT