Did you check the spark plug wires for being to worn, cut, or fraying?
Next area if running a distributor and coil, check for arcing or dirty
contacted, loose connected coil wire.
--------------------------------------
Steven St.Laurent
C4i System Engineer
C4i Engineering Branch, PSD, MCTSSA
MARCORSYSCOM, U.S. Marine Corps
Office (760) 725-2506 (DSN Prefix: 365)
"Never be content with somebody else definition
of you. Instead, define yourself by your own beliefs,
your own truths, your own understanding of who
you are. Never be content until you are happy with
the unique person GOD has created you to be."
-----Original Message-----
From: WP [mailto:puzlist@mn.rr.com]
Sent: Saturday, July 13, 2002 4:07 PM
To: dakota-truck@dakota-truck.net
Subject: Re: DML: Dakota won't go above 800 rpm : Update
Here's the results for the snapshot I took after it had been running for
a few minutes, though not fully warmed up. Also, I disconnected the
exhaust pipes at the manifold, just in case the converter had plugged
up. No difference.
O2 Bank1/Pos1 2.05 v
Coolant Temp 118.4 deg
Coolant sensor 1.3 v
Throttle pos .7v
Min throttle pos .7v
Battery voltage 13.8v
MAP sensor 21.3 in/HG
AIS position 180 steps
Adapt fuel #1 0us
Adapt Factor #1 0%
Baro pressure 29.4 in/HG
Engine speed 736 RPM
F1 start count 2 starts
F2 start count 0 starts
F3 start count 0 starts
Module advance 20.0 BTC
Charge temp 114.8 F
Charge temp sens 1.5 v
Charge goal 13.7v
Trans fluid temp -126.4 <<< weird, but I don't think this truck has
this sensor
Trans fluid sens 4.9v
Battery Temp 95 deg
O2 Bank2/pos1 0v <<< This truck only has one 02 sensor
Adapt factor #2 0%
Adapt fuel #2 0us
Closed loop no
MAP sensor 3.1v
02 Bank1/pos1 rich
Vacuum 8.0 in/HG
Throttle open 0% WOT
Total advance 20.0 BTC
02 Bank2/pos1 Lean <<< This truck only has one 02 sensor
Injector PW #1 5.5ms
Fuel sensor 2.48v
Bob Tom wrote:
>
> At 04:25 PM 7/13/02 -0500, you wrote:
>
>> I put a fuel pressure tester on it and I get 35-40 lbs as it's idling.
>
>
> That sounds normal for your model year. The proper amount
> should be getting up to the fuel rails. Question now becomes
> is the proper amount coming through the injectors.
>
>> Here's a weird thing: I can monitor the sensor output as the engine
>> is running, but I can only 'scan' the computer once, then I get
>> 'Vehicle is not responding'. In order to get another scan, I have to
>> re-initialize the scanner. I'm using an Auto X-ray EZ Link scanner.
>
>
> I tried this scanner many years ago. I often got this message on the
> first day and returned it. I think it was because the scanner's
> connector
> that plugs into the Dak's data line connector is really poorly made
> (poor manufacturing quality control). I went to a high-end (read
> expensive)
> scanner and had no problems.
>
> It could be, for whatever reason, that the timing is out of whack but I
> would have expected that there would be noises (misfiring, etc.).
>
> Do you have a reading for the tps, the pulsewidth of the injectors and
> the MAP sensor at and just after 800 rpms? Is there any smoke coming
> out of the exhaust pipe when it is stumbling?
>
> Bob
>
>
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:05:04 EDT