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