1993 O2 sensor replacement
 

There was a post on here about the part #'s and the 2 different types. Cant find it... help

I have the one with 2 wires. Do all of them have 2 wires or...?

Re: 1993 O2 sensor replacement
 

Oxygen Sensor Application Guide:

P87H 3.8 GM P/N: 25162693 AC P/N: AFS20 POSN 1
P88H 3.8C GM P/N: 25162693 AC P/N: AFS20 POSN 1
P88H 3.8-3 GM P/N: 25162693 AC P/N: AFS20 POSN 1
P89H 3.8C GM P/N: 25162693 AC P/N: AFS20 POSN 1
P90H 3.8C GM P/N: 25162693 AC P/N: AFS20 POSN 1
P91H 3.8C GM P/N: 25162693 AC P/N: AFS20 POSN 1
P92H 3.8L GM P/N: 25162693 AC P/N: AFS20 POSN 1
P92H 3.8-1 GM P/N: 25162693 AC P/N: AFS20 POSN 1
P93H 3.8L GM P/N: 25162693 AC P/N: AFS20 POSN 1
P93H 3.8-1 GM P/N: 25162693 AC P/N: AFS20 POSN 1
P94H 3.8 GM P/N: 25312184 AC P/N: AFS75 POSN 1
P95H 3.8K GM P/N: 25312184 AC P/N: AFS75 POSN 1
P95H 3.8-1 GM P/N: 25312184 AC P/N: AFS75 POSN 1
P96H 3.8 GM P/N: 25312184 AC P/N: AFS75 POSN 1
P97H 3.8K GM P/N: 25312203 AC P/N: AFS109 POSN 1
P97H 3.8K GM P/N: 25312196 AC P/N: AFS97 POSN 3
P97H 3.8-1 GM P/N: 25312196 AC P/N: AFS97 POSN 3
P98H 3.8K GM P/N: 25312203 AC P/N: AFS109 POSN 1
P98H 3.8K GM P/N: 25312207 AC P/N: AFS116 POSN 3
P98H 3.8-1 GM P/N: 25312203 AC P/N: AFS109 POSN 1
P98H 3.8-1 GM P/N: 25312207 AC P/N: AFS116 POSN 3
P99H 3.8K GM P/N: 25312203 AC P/N: AFS109 POSN 1
P99H 3.8K GM P/N: 25312207 AC P/N: AFS116 POSN 3
P99H 3.8-1 GM P/N: 25312203 AC P/N: AFS109 POSN 1
P99H 3.8-1 GM P/N: 25312207 AC P/N: AFS116 POSN 3
P00H 3.8K GM P/N: 25312203 AC P/N: AFS109 POSN 1
P00H 3.8K GM P/N: 25312207 AC P/N: AFS116 POSN 3
P00H 3.8-1 GM P/N: 25312203 AC P/N: AFS109 POSN 1
P00H 3.8-1 GM P/N: 25312207 AC P/N: AFS116 POSN 3
P01H 3.8K GM P/N: 25312203 AC P/N: AFS109 POSN 1
P01H 3.8K GM P/N: 25312207 AC P/N: AFS116 POSN 3
P01H 3.8-1 GM P/N: 25312203 AC P/N: AFS109 POSN 1
P01H 3.8-1 GM P/N: 25312207 AC P/N: AFS116 POSN 3
P02H 3.8K GM P/N: 25312203 AC P/N: AFS109 POSN 1
P02H 3.8K GM P/N: 25312207 AC P/N: AFS116 POSN 3
P02H 3.8-1 GM P/N: 25312203 AC P/N: AFS109 POSN 1
P02H 3.8-1 GM P/N: 25312207 AC P/N: AFS116 POSN 3
P03H 3.8K GM P/N: 25312203 AC P/N: AFS109 POSN 1
P03H 3.8K GM P/N: 25312207 AC P/N: AFS116 POSN 3
P03H 3.8-1 GM P/N: 25312203 AC P/N: AFS109 POSN 1
P03H 3.8-1 GM P/N: 25312207 AC P/N: AFS116 POSN 3

HO2S.

I had some crosseyed ass wipe at Autozone tell me all O2 sensors have 2 wires, a receiving and a sending. So I am like okay... I'm going to order it off the net.

Mine is 4 wires... :?

Ah its in the Techinfo, completely forgot. Thanks anyhow.

How do I disconnect the wires and reconnect em?

Doh, they just plug in.

Also mine doesnt have two wires it has 3. Is this still the Heated one?

I ordered one from O'Reillys today. 53$ isnt to bad considering I dont have to wait for weeks. I had him check in his system to see if the ac delco part # brought up any results. His inventory screen didnt even give the option of having one, but with the part number he found one half a state away so I'll will have it in 2 days.

I sure hoping this makes my car get better gas mileage, right now its really shitty mpg and I am betting that with all the 127k on it it still has the original.

i was getting some really bad gas mileage with my 96...turned out the EGR needed to be cleaned and another emmisions thing (name escapes me at the moment) purged. Gas mileage immediatly back to normal!

Have any instructions how to clean em? I think you mean the charcoal purge canister