'86 CGT oxy sensor

[Ameer Antar]

in '86 audi was using unheated sensors, so it's prolly correct. The extra 
unused connector you see is the CIS OXS duty cycle for setting the mixture 
and CO level. Even if you put a 3-wire in, the ECU won't do anything w/ the 
signal till the thermoswitch triggers. So unless you swapped ecu's too, you 
wouldn't benefit. The poor mileage is prolly combination of things...bad o2 
sensor, spark plugs, fuel filter, fuel injectors, engine compression, vacc. 
leaks, etc.

try replacing the cheap stuff first and inspect the whole thing 
carefully...good luck.

-ameer


At 10:11 PM 10/2/00, you wrote:
>With all this oxy sensor talk, I know my '86 CGT is in need of a new one. It
>currently has a one wire sensor in it now. I noticed that while this 1 wire
>sensor plugs directly into a single socket plug on the factory harness,
>there is a 2 wire socket on the same harness that is unused. Does the '86
>CGT take a 3 wire heated sensor, or is the 1 wire one correct? I've looked
>in the family album, and its inconclusive. I am hoping replacing this sensor
>will correct the horrible idle problems and the poor gas mileage (~12 mpg
>according to the trip computer). TIA.
>
>Craig
>'92 100S (90k)
>'86 CGT (191k)
>
>
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