[Shotimes] Fuel Mileage, fuel regulator and Codes

[Paul L Fisher]

I would replace the O2 sensors as a pair. Chances are, if one went out, the
other is soon to follow. In addition, mixing brands sometimes confuses the
PCM.

Paul L Fisher
'93 Ford Taurus SHO Crimson Clearcoat ATX 172K Build date 11/18/1992
- K&N Panel filter, Tokico Struts, Eibach Springs, Dynomax cat-back, Holley
190lph fuel pump, FPS rebuilt ATX, 26mm rear sway bar, Performance-Plus
Stainless Steel Y-pipe, '96 brake upgrade, Proportioning valve plugs, Delrin
sub-frame bushings, Amsoil Series 2000 0W-30 oil, Amsoil Synthetic ATF.

SHO Club member http://www.shoclub.com/
Check out my web site http://www.paul-fisher.com/
Amsoil dealer http://www.paul-fisher.com/oil.htm

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----- Original Message ----- 
From: "Steve Weinrich" <stevwein@swbell.net>
To: <shotimes@autox.team.net>
Sent: Thursday, May 29, 2003 8:06 AM
Subject: Re: [Shotimes] Fuel Mileage, fuel regulator and Codes


> 511 codes are normal when running with an after-market chip.  The add-on
> chip changes the ROM checksum and causes this self-test to fail.
>
> 542/543 are normal if the car has been stalled.
>
> 137 is bank 2 always rich.  Bank 2 is closest to the radiator and includes
> 4, 5, and 6 cylinders.  You have your banks reversed.
>
> If the front O2 sensor is giving accurate readings, I would suspect some
> kind of  restriction in the front portion of the intake manifold.  I can't
> think of a likely scenario whereby all three cylinders would be getting
> extra fuel except under the control of the EEC.
>
> I would try a new Bosch sensor from AutoZone, reset the KAM in the EEC,
and
> try it again.
>
> Steve W
>
>
> ----- Original Message -----
> From: "John Zarebski" <jzarebsk@mnsi.net>
> To: <shotimes@autox.team.net>
> Sent: Wednesday, May 28, 2003 10:43 PM
> Subject: [Shotimes] Fuel Mileage, fuel regulator and Codes
>
>
> > I am continuing to track my mileage problem down.. Finally had some
codes
> > showing and need some assistance.
> > 511 & 542 KOEO
> > not quite sure to make of 511 EEC processor ROM test failure. Any
> > suggestions welcome.
> >
> > 137 KOER which O2 sensor indicates system rich (left hand side). The
> > cylinder balance test showed a problem with 4, 5, 6
> >
> > I interpret this as a faulty O2 sensor giving me system rich on 4,5,6
> > Would you concur or is there something else I should consider.
> >
> > Other information.  Engine heads and rings done last July, new plugs,
> crank
> > and cam sensors, replaced one faulty O2 sensor on Bank 2(from Ford
> > statement)in March for emissions testing. I am assuming  Bank 2 concern
> > cylinder 1,2,3(RH) and Bank 1 concerns 4,5,6(LH).
> >
> > With thanks for the help.
> >
> > John
> > Chatham ON Canada
> > 93MTX, PPY, 80MAF,TB chip, Dynomax Catback
> > _______________________________________________
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> > Shotimes@autox.team.net
> > http://www.team.net/mailman/listinfo/shotimes
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