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

Re: 1993 O2 sensor replacement
 

Something is wrong with the chart, because in 93, the S/C engine did not use a heated sensor, while the N/A engine did. The part numbers should be different.

Re: 1993 O2 sensor replacement
 

Well my GM Parts Book only shows this info for all 92/93's! :? Is it possible you got a 94 style? :?

Is the US Model different from the Cdn Model I wonder then???? :?

Mine is a single wire....unheated. JSeabert's is a heated. He's a 93 NA. Go figure. This is one of the things that caused so much confusion early on. My magic book actually gave me the right number for mine (25162693) but that's the only one listed for 92/93, and Josh's is different. Jr, take a look at the book I sent you and you'll see what I mean. It also shows one part number for 94/95, another for 96/97, and another for 98/99. I don't trust any of this any more......but it's the only apparent bum info in my book.

I wanna book :cry: :lol:

sorry, just ignore the whiny baby...back to 02 sensors now :wink:

Geezuz. You whine like a GIRL!

Well if everyone had one there would be no need for us here now would there? :lol:
J/K :lol: What some cheese with that wine? :twisted:

You guys that didnt buy a o2 socket must be a sight more nimble than I.

I had to go buy a socket but I'm just going to return it when I am done with it.

I just changed mine today with a 8" Adjustable wrench. It was fine and easy to change - I was surprised actually.

The T-stat was more messy but did it. It is running cooler which is nice :)