yes..the higher the sync usually the richer it will be,
Greg Conner
1996 RC
3.9 hybrid
>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
> >
> >
> >93 CC, 5.2, Rebuilt engine 30 over, 604 Competition Cams:lift .512
>dur@.050
> >210, 220 / LSA 112, Heads ported/5 angle , 2bbl M1 Intake, Jet Hot Coated
> >Thorley Headers, Ported TB, True Duals w/ FM 70's and Cuda Tips, MP PCM,
>MP
> >Cast
> >Valve Covers, MP Cast Air Cleaner, K&N Filter,MP DRT Chain, MSD 8.5mm
> >wires, MSD
> >6T, Blaster coil, Underdrive Crank Pulley, APS 46 RH Transmission w/ All
> >The
> >Options, MP Torque Converter, Viper Fan, Lowered 2-3. Energy Suspention
> >body
> >mounts, A arm bushings & sway bar bushings, 4.10's W/ Dana Spicer Trac
>Loc,
> >Road Master Active Suspention, Doestech Shocks, Front and Rear Anti Sway
> >Bars,
> >Cowl Hood, Sir Michales Roll Pan.
> >
> >
>
>
>
>
>
>
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This archive was generated by hypermail 2b29 : Fri Feb 06 2004 - 11:46:30 EST