Have AFS20s been superceeded

[jmidolo]

?? to AFS 81s?? I just got mine and expected 20s and got 81s??

 

[turbo buicks]

WTF ARE YOU TALKING ABOUT???

 

[jmidolo]

Oxygen sensors...ever hear of them?? If ya don't know what an AFS20 is I guess not

 

[Quick6]

Why, were you told they were?? What about using the afs22

 

[jmidolo]

I bought the 3 fer $66 deal that Ramchargers had and they are AFS81s... 22 is the heated one correct? They do look the same, dont know...

 

[Iceman]

I just bought a ASF-20 yesterday.
Does the ASF 81 have a purple wire?

 

[jmidolo]

Originally posted by Iceman
I just bought a ASF-20 yesterday.
Does the ASF 81 have a purple wire?

Yep on the purple wire....single purple wire
GM# 25162600

 

[gofstbuick]

Originally posted by jmidolo
I bought the 3 fer $66 deal that Ramchargers had and they are AFS81s... 22 is the heated one correct? They do look the same, dont know...

AFS22 is a GNX O2 sensor, not heated.

 

[gofstbuick]

looks like the AFS81s belong to the GM 4 cylinder line. You can look here to find out which vehicle the AC Delco part # belongs to

part #

 

[turbo buicks]

I RUN A GNX 02 SENSOR. ITS LIKE NOS INJECTION.

 

[Pronto]

OK, I'll ask it. Whats the difference between the stock turbo O2 sensor and the GNX one?

 

[gofstbuick]

Supposedly, the GNX O2 sensor is more heat resistant and will cycle faster than the GN O2 sensor. The GM computer (of that era) isn't the fastest of automotive computers, so I don't know whether the faster cycling will make a difference. But a sensor that is more heat resistant may be more durable.