[Shotimes] BARO sensor

[Carl Prochilo]

Thanks Adam.

I'm sure that all the sensors are part of the self-test logic "pie" as
you say.  Heck, even the low tech CANP solenoid is tested and if it's
not installed you will throw a code.

I will still post my measurements when I get to it.  Somehow as most
of these sensors seem to do, they all fall by the wayside at some
point especially with the age and mileage I've racked up on this car.
-- 
Cheers,
Carl Prochilo
92 Ultra Red Crimson

On Fri, September 23, 2005 23:09, Adam Parrott said:
>>> Since we've established that an incorrect signal will not post a
>>> code in
> the diagnostics <<
>
> Actually, while there may not be any known occurrences of a bad BAP
> setting a
> code on an MTX SHO, it is technically possible to do so when you
> consider the
> fact that all sensors have their own piece in the self-test logic
> "pie" that
> is programmed into all EEC calibrations(refer to the generic EEC-IV
> DTC's 22
> and 126 for reference).
>
>>> if for some reason the BAP sensor is in fact giving a lower voltage
>>> signal
> to the PCM that is correct for the given environmental conditions, the
> car
> will not receive proper air/fuel mixture.  Is that correct?  Might a
> symptom
> of a bad BAP be poor fuel mileage? <<
>
> Knowing just what and how BAP readings will affect the EEC will depend
> on the
> strategy or calibration in question.  With regards to the MTX SHO
> specifically, I can tell you that BAP readings play a much larger role
> in
> determining spark advance than they do in fuel metering.  I can also
> tell you
> that, even on the cars where BAP readings DO play a role in the
> fueling
> calculations, a bad BAP would never be enough in and of itself to
> cause
> noticeably poor gas mileage.
>
> Adam
>
>
>   ----- Original Message -----
>   From: Carl Prochilo
>   To: shotimes@autox.team.net
>   Sent: Monday, September 19, 2005 1:08 PM
>   Subject: Re: [Shotimes] BARO sensor
>
>
>   Adam,  Let me impose further on your knowledge of the EEC IV program
>   for the SHO.  Since we've established that an incorrect signal will
>   not post a code in the diagnostics, if for some reason the BAP
> sensor
>   is in fact giving a lower voltage signal to the PCM that is correct
>   for the given environmental conditions, the car will not recieve
>   proper air/fuel mixture.  Is that correct?  Might a symptom of a bad
>   BAP be poor fuel mileage?
>   --
>   Cheers,
>   Carl Prochilo
>   92 Ultra Red Crimson
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