What is the AutoX-Ray showing on fuel trim?
- Bernd
> >From: JAMEPC@aol.com
> >Reply-To: dakota-truck@dakota-truck.net
> >To: aol@dakota-truck.net
> >Subject: Re: DML: Code 52 Returned!! Date: Wed, 25 Jun 2003 09:06:57 EDT
> >
> >Ray,
> >Thanks for the advise but I the '93's have OBD I.
> >I looked it up in the FSM and it says "Code 52- O2 Signal Stays Above
> >Center
> >(Rich)", which is not the case according to the Auto X-Ray, OR "Additive
> >Adaptive memory at Lean Limit". Since the code always comes back 200 miles
> >after
> >resetting the PCM, it sounds like an Additive Adaptive Memory problem.
> >Would
> >that suggest I have an overly rich condition that the PCM can't correct? (I
> >think it was Ray B. that suggested that to me on my original post a few
> >weeks
> >ago).
> >.
> >Greg- You suggested checking my fuek sync. Can an improper fuel sync cause
> >an overly rich condition?
> > Thanks,
> >James
> >
> >James,
> > Going to the OBD II web site and punching in your code 52 this is
> >what they say the code means:
> >
> >Open or shorted condition detected in the speed control servo power control
> >circ
> >
> >
> >Question, does your truck have cruise control? The problem may therein. If
> >so, the cruise control servo is , I think, mounted on the firewall,
> >passengers side, directly aft of the valve cover. You can try to follow the
> >cruise cable from the TB back and it will lead you directly to the servo.
> >Maybe try unplugging the servo and see if the code clears. I don't know
> >what else to tell you to check, I can only tell you what OBD II says the
> >code means. Unfortunately, I'm at work and my FSM is at home so I can;t
> >look it up for you right now. I trust auto zone to give me a good read out
> >on what codes my PCM is throwing, but I'm not too sure about their
> >equipment's ability to correctly interpret the codes.
> >
> >
> >HTH,
> >
> >Ray Irons
> >Dover, DE
> >
> >
> > >From: JAMEPC@aol.com
> > >Reply-To: dakota-truck@dakota-truck.net
> > >To: aol@dakota-truck.net
> > >Subject: DML: Code 52 Returned!!
> > >Date: Tue, 24 Jun 2003 17:54:40 EDT
> > >
> > >Well, the peoblem returned again. After resetting the PCM and driving
> >200
> > >miles with no problems, code 52 "Sustained rich mixture exceeds range of
> > >control" has returned along with the acceleration hesitations. Any other
> > >ideas?
> > >Also, that is the Auto X-Ray's definition of code 52. My FSM is at my
> > >friends shop. Can someone look it up for me and tell me how the FSM
> > >defines code
> > >52?
> > >Thanks,
> > >James
> > >
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