RE: RE: RE: Here's one for the other Experts on the list...

From: Ray Block (BPracing@wowway.com)
Date: Thu Jun 19 2008 - 22:06:35 EDT


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
> >
>
>



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