i have a 81 that i replaced the cat converter and muffler the new cat did not have a o2 sensor but the old one did or at least i think them wires are for a o2 sensor. Anyway when i go to bye a new o2 sensor they only have a single wire sensor and i need two wires. Any help out there would be greatly appericated

 

There are two wires going to the sensor?

 

Most 80-84.5 yotas came with a one wire oxygen sensor in the exhaust manifold. Also known as a dummy sensor :o) Never heard of one down there. Is it affecting mileage or power?

 

the sensor was on the back of the old cat converter. and yes there are two wires. sense replacing the converter with a new one the truck will not idle smooth and seems to be running real rich.

 

sorry man no luck in my brain. I would think maybe ask around at part stores or google it. Find some info on that 2 wire cat and what is is for.