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