WB O2 sensor connection alternative

[David LaRoe]

The mil spec 15 turn pots will outlive the rest of the PC board.


----- Original Message -----
From: "Jim Blackwood" <jblackwood5 at home.com>
To: <diy_efi at diy-efi.org>
Sent: Tuesday, November 27, 2001 11:35 AM
Subject: RE: WB O2 sensor connection alternative


> One good reason is that pots tend to degrade over time if not used
> regularly. I'm not sure why, maybe oxidation, maybe something else, but
> it adds to the failure mechanisms count.
>
> Jim
>
> -----Original Message-----
> From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org] On
> Behalf Of David LaRoe
> Sent: Tuesday, November 27, 2001 1:11 PM
> To: diy_efi at diy-efi.org
> Subject: Re: WB O2 sensor connection alternative
>
>
> Also, why not mount a 15 turn trim pot, of the appropriate range, on the
> PC board for adjustment for any sensor change? ..... Dave
>
>
> ----- Original Message -----
> From: "Timothy J Burgess" <tjburgess at west.raytheon.com>
> To: <diy_efi at diy-efi.org>
> Sent: Tuesday, November 27, 2001 7:52 AM
> Subject: WB O2 sensor connection alternative
>
>
> > An alternative method of sensor to harness connection is to use
> > multipin automotive weather pack connectors.  Assuming that a
> > discrete, or combination of discrete, resistors is used to emulate the
>
> > sensor calibration resistor, the original connector may be cut from
> > the sensor harness, and the sensor wires may be soldered to the
> > weather pack
> connector
> > pigtails.  Pep Boys has inexpensive 3 pin and 2 pin male & female
> > mating connectors with pigtails available to make the required 5 wire
> > sensor connection.  They also stock more expensive 6 pin male & female
>
> > connectors with pigtails, if that better suits your application.
> >
> > Tim
> >
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