heated O2 sensor?
Thread Starter
Instructor
Joined: Nov 2002
Posts: 159
Likes: 0
From: Lusby MD
heated O2 sensor?
Ok, Finished installing my 2149 hooker headers on my 91 L98 :D . Car runs great, headers look sharp, but within a day of the installation the check engine light comes on after approx. 20 mins of driving. From info I've read on the forum I suspect I need to get a heated O2 sensor. Can I just pick this up at Autozone or do I need to special order this? Any Part #'s would be nice.
:seeya
:seeya
Le Mans Master
Joined: Jul 2002
Posts: 5,818
Likes: 2
From: Alive and well in Burlington NC
Re: heated O2 sensor? (Rays91L98)
Pull the code history before you start replacing parts. I'll bet you get a code 32 (EGR). Got (get) the same thing when I eliminated the pre cats, added Flowmasters and replaced the main cat with a high flow model.
You can use the procedure here:
http://www.c4vettes.com/codes.htm
Let us know what you find.
You can use the procedure here:
http://www.c4vettes.com/codes.htm
Let us know what you find.
Drifting
Joined: Mar 1999
Posts: 1,931
Likes: 1
From: Norcross GA
Re: heated O2 sensor? (Rays91L98)
AC Delco# GM P# Description
AFS-17P 8990793 three wire, 4 hole connector
AFS-40 25108302 four wire, 4 hole connector, redundant sig gnd
AFS-41 25108814 three wire, 4 hole connector
AFS-45 25132086 four wire, 4 hole connector, redundant sig gnd
AFS-49 25132271 three wire, 4 hole connector
AFS-60 25132529 four wire, 4 hole connector, redundant sig gnd
AFS-48 25132169 three wire, 4 hole connector
AFS-63 25132674 three wire, 4 hole connector
AFS-62 25132616 four wire, 4 hole connector, redundant sig gnd
AFS-65 25132819 four wire, 4 hole connector, redundant sig gnd
AFS-66 25132789 three wire, 4 hole connector
AFS-72 25133358 four wire, 4 hole connector, redundant sig gnd
AFS-75 25312184 four wire, ???
AFS-74 25165312 three wire, ???
3 and 4 wire units are heated.
AFS-17P 8990793 three wire, 4 hole connector
AFS-40 25108302 four wire, 4 hole connector, redundant sig gnd
AFS-41 25108814 three wire, 4 hole connector
AFS-45 25132086 four wire, 4 hole connector, redundant sig gnd
AFS-49 25132271 three wire, 4 hole connector
AFS-60 25132529 four wire, 4 hole connector, redundant sig gnd
AFS-48 25132169 three wire, 4 hole connector
AFS-63 25132674 three wire, 4 hole connector
AFS-62 25132616 four wire, 4 hole connector, redundant sig gnd
AFS-65 25132819 four wire, 4 hole connector, redundant sig gnd
AFS-66 25132789 three wire, 4 hole connector
AFS-72 25133358 four wire, 4 hole connector, redundant sig gnd
AFS-75 25312184 four wire, ???
AFS-74 25165312 three wire, ???
3 and 4 wire units are heated.
Le Mans Master
Joined: May 1999
Posts: 6,516
Likes: 1,303
From: Windermere FL
Re: heated O2 sensor? (Rays91L98)
https://www.corvetteforum.com/techti...D=93&TopicID=2
Here is a step-by-step. I did not have a code 32 before I did this. Just wanted to get it out of open loop ASAP.
Actually, I had a code 32 when I gutted my cats. Putting in the header somehow got rid of the code 32 :party:
Here is a step-by-step. I did not have a code 32 before I did this. Just wanted to get it out of open loop ASAP.
Actually, I had a code 32 when I gutted my cats. Putting in the header somehow got rid of the code 32 :party:
