Replaced O2 sensor----Does computer need a reset? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Thread Tools Search this Thread
Old 01-18-2008, 11:13 AM   #1
Posts like a V-Tak
Thread Starter
Join Date: Jan 2008
Location: Long Island, NY
Posts: 79
Thanks: 0
Thanked 0 Times in 0 Posts
reb is on a distinguished road
Default Replaced O2 sensor----Does computer need a reset?

In the hopes of improved gas mileage, I changed the 02 sensor to a new AC/Delco. At 95k, the original sensor was shot. The tip was coated with black carbon, the sticking EGR valve probably was no help!

Do I have to reset the computer or just drive as normal?

Also, interesting that AC Delco has changed the design of the AFS109. The tip is now a perforated cylinder. The old design was a spiral slotted bulbous shape. I called AC Delco and confirmed that the part I recieved is genuine and of current design.
reb is offline   Reply With Quote
Old 01-18-2008, 12:36 PM   #2
Junior Member
Join Date: Mar 2003
Location: Purgatory
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
vital49 is on a distinguished road

Just drive it as normal. Besides, there'* no true reset for our PCMs anyway (unless you disconnect the battery).

It will take the PCM time to relearn the new values being sent from the O2 sensor. That will take about a tank of gas before you see any improvements.
vital49 is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Computer Reset issue after battery replacement HillBillyBuddha Oldsmobile 7 06-12-2015 09:06 PM
Help! What is this and does it need repaired/replaced? ScottyB Oldsmobile 8 04-08-2011 10:45 PM
Reset Computer - Engine purrs ... a week later - poor acel. james7bond 1992-1999 2 10-24-2007 07:43 AM
reset computer 95 bonneville walton34 1992-1999 3 01-08-2006 04:28 PM
air bag light came on need to reset it ZCRX87 1992-1999 9 09-10-2005 07:56 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -4. The time now is 04:49 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.