---------- Forwarded message ----------
From: Rick Barnes <rsb7424@gmail.com>
Date: Thu, Jun 19, 2008 at 10:53 PM
Subject: Re: DML: Here's one for the other Experts on the list...
To: dakota-truck@dakota-truck.net
This may seem dumb Bernd, but I would look for a funky ground cable or
wiring connection....stuff like that will make things just act crazy,
but that is just a "swag"...(scientific wild ass guess).
Rascal
On Thu, Jun 19, 2008 at 8:00 PM, Bernd D. Ratsch <bernd@dodgetrucks.org> wrote:
>
> 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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