According to your readout it's not in closed loop. What makes you think it
is?
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
For modifications see my DML Profile (URL follows)
http://www.twistedbits.net/WWWProfile/dakota/Kw9pV1EkFeOYY
-----Original Message-----
From: owner-dakota-truck@dakota-truck.net
[mailto:owner-dakota-truck@dakota-truck.net]On Behalf Of WP
Sent: Sunday, July 14, 2002 10:58 AM
To: dakota-truck@dakota-truck.net
Subject: Re: DML: Dakota won't go above 800 rpm : Update
I'm stuck. The really weird thing is that the computer evidently thinks
nothing is wrong, as I can't get any trouble codes out of it. It's like
it's stuck in idle mode, as it seems to stay in closed loop even if I
open the throttle. It helps a little bit if I pump the gas pedal while
it's still warming up, but that'll only get it up to about 800 RPM.
Ronald Wong wrote:
> Was cam position sensor checked? I don't know how things worked on 94's
but
> on my Y2K that distributor position determines when fuel is delivered to
the
> cylinder. Perhaps there's no fuel there when the plug fires. Or crank
> position...maybe pistons and valves are not synchronized. I'm just trying
> to picture how it would even get up to 800 and no further. Something's
> missing here......... :-(
>
> Ron
> 00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
> For modifications see my DML Profile (URL follows)
> http://www.twistedbits.net/WWWProfile/dakota/Kw9pV1EkFeOYY
>
>
> -----Original Message-----
> From: owner-dakota-truck@dakota-truck.net
> [mailto:owner-dakota-truck@dakota-truck.net]On Behalf Of Bob Tom
> Sent: Saturday, July 13, 2002 2:53 PM
> To: dakota-truck@dakota-truck.net
> Subject: Re: DML: Dakota won't go above 800 rpm : Update
>
>
>
> 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