Gas and Oil Mileage (orig)

[mr.c]

Emory, my efi has the holli injectors but the rest is gm. The o2 sensor
has just one lead.
al

> Thanks Emery. All I remember is the Holley TBI light going off when it
> got warmed up. When I get a few things back together I'll try the
> light test. The O2 sensor sounds like mine looks, so might be a good
> investment.
>
> ----
> >
>
> off at idle and at about 1500-2000 rpm and at highway speeds when you
> are driving? If ...
> ....
> ...I believe it is because it has 3 leads. I bought the replacement at
> AutoZone. #069370 13077 $64.99. This is an exact replacement including
> the three wire plug at the end of the wires.
>
> Emery Stora
> -------
> Thanks,
> Bill ... on the digest ...
> _________________________________________________________
> Do You Yahoo!?
> Bid and sell for free at http://auctions.yahoo.com

 

[mr.c]

The O2 sensor goes in the exhaust manifold. The 198x to 1990 GMC trucks used a
one pin 02 sensor. I do have a spare, but have not put it in. I checked the
connection and it is a one pin.. GMC part # 25105901.

To Paul Bartz... Paul, the Howell does have a knock sensor.

al

>
> has just one lead.
> al >>
>
> Al - just one lead? I thought the minimum was two leads. It must get the
> other contact from the ground although I would think that the exhaust pipe
> might not be a very good ground. Most O2 sensors are interchangeable as long
> as the number of leads are the same. In autos I have cut off the plug and
> wired in a replacement sensor that came with a different plug. I'm sure it
> would help keep performance up if the sensor were treated as a periodic
> maintenance item and replaced once in a while (a few years? or X miles.) I
> don't know what the recommended replacement time would be but they do degrade
> in performance after time. My Holley system has a red light that flashes on
> and off when it is operating properly. If the light isn't working or is
> sluggish the chances are that the O2 sensor is going bad. This has only
> happened to me once when the sensor was about 5 years old.
>
> Emery Stora
> 77 Kingsley
> Santa Fe, NM

 

[william myers]

Thanks Emery. All I remember is the Holley TBI light going off when it
got warmed up. When I get a few things back together I'll try the
light test. The O2 sensor sounds like mine looks, so might be a good
investment.

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>