What's better: rear O2 vs O2 simulator - 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.

Reply
 
 
 
Thread Tools Search this Thread
Old 08-09-2005, 08:03 PM   #1
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2004
Location: Western MA
Posts: 2,708
Thanks: 0
Thanked 1 Time in 1 Post
randman1 is on a distinguished road
Default What'* better: rear O2 vs O2 simulator

Frank is undergoing exhaust fabfication. The shop that is making it said that they would weld in a fitting that will allow the installation of the rear O2 sensor and also include a cap if I decide to use a simulator. Since I will have the luxury of being able to choose and change if needed, would it be better to install the O2 sensor or use the simulator??
randman1 is offline   Reply With Quote
Old 08-09-2005, 08:07 PM   #2
Junior Member
 
Join Date: Jun 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
2000SilverBullet is on a distinguished road
Default

The O2 sensor behind the cat is only there to monitor the condition of your Catalytic converter. Those of us who have extracted our Cats use the simulator so the PCM doesn't throw a code.
2000SilverBullet is offline   Reply With Quote
Old 08-09-2005, 08:11 PM   #3
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2004
Location: Western MA
Posts: 2,708
Thanks: 0
Thanked 1 Time in 1 Post
randman1 is on a distinguished road
Default

A magnaflow high flow cat is going in. I don't know if that makes a difference.
randman1 is offline   Reply With Quote
Old 08-09-2005, 08:28 PM   #4
Senior Member
True Car Nut
 
Join Date: May 2003
Posts: 7,262
Thanks: 0
Thanked 0 Times in 0 Posts
ssesc93 is on a distinguished road
Default

is that simulator your taking about is the screw that....never mind....
ssesc93 is offline   Reply With Quote
Old 08-09-2005, 09:09 PM   #5
Senior Member
True Car Nut
 
Join Date: Jun 2004
Location: Glendale, AZ
Posts: 3,459
Thanks: 0
Thanked 1 Time in 1 Post
big_news_1 is on a distinguished road
Default

Don't worry about the simulator.... I have one and I still get an intermittent CEL. I don't know if that means I have a problem in the wiring, but I would say if you know you've got a good cat on there, you don't need a sensor to keep an eye on it.

Ultimately, it'* up to you.
big_news_1 is offline   Reply With Quote
Old 08-10-2005, 09:57 AM   #6
Senior Member
Posts like a Camaro
 
Join Date: Dec 2003
Location: Massachusetts
Posts: 1,019
Thanks: 0
Thanked 0 Times in 0 Posts
CFoote is on a distinguished road
Default

Hey Randy,

As the others have mentioned, a simulator just sends the proper signal (resistance?) back to the PCM to tell it the O2 is working just fine (or so it thinks! hahaha)...the other option is to install a rear O2 which just verifies the cat is working properly. I don't know if O2 sensors are calibrated for specific exhaust size and engine (I'm assuming they are since they change part #* every 2-3 years in various makes and models) so I am thinking to make things easy for you just go with a O2 simulator and you will be fine. We all know Frank is a happy camper and it not polluting

Chris
CFoote is offline   Reply With Quote
Old 08-10-2005, 10:02 AM   #7
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

When I stopped off and chatted with Mr. Muffler last night and asked him to put up Franks windows.

Knowing they are putting in the threaded part for an O2 and having talked to Randy. I told Muffler guy to put the old O2 (currently in the piece of exhaust on the car) into the hole and that the electrical connector was sitting in the engine bay.

Frank will have a rear O2 and not need to be simulated.
BillBoost37 is offline   Reply With Quote
Old 08-10-2005, 03:23 PM   #8
Senior Member
True Car Nut
 
Join Date: Jun 2004
Location: Glendale, AZ
Posts: 3,459
Thanks: 0
Thanked 1 Time in 1 Post
big_news_1 is on a distinguished road
Default

Ya know, I just re-read my post and it didn't really make any sense. I was trying to say that I think you should use a simulator as long as you know you've got a good cat on there.

Alternatively, depending on the year of the car you could have the rear O2 CEL removed from the PCM. That would be my highest recommendation. Like I said, as long as you know you've got a good cat on there you're okay.
big_news_1 is offline   Reply With Quote
Old 08-10-2005, 04:17 PM   #9
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Quote:
Originally Posted by big_news_1
Ya know, I just re-read my post and it didn't really make any sense. I was trying to say that I think you should use a simulator as long as you know you've got a good cat on there.

Alternatively, depending on the year of the car you could have the rear O2 CEL removed from the PCM. That would be my highest recommendation. Like I said, as long as you know you've got a good cat on there you're okay.
I understood it on your other post...lol Randy will probably be changing pcm etc pretty soon, but meanwhile it'* all good.
BillBoost37 is offline   Reply With Quote
Old 08-10-2005, 04:34 PM   #10
Senior Member
Posts like a Supercharger
 
Join Date: Jul 2005
Location: Zimmerman, MN.
Posts: 198
Thanks: 0
Thanked 0 Times in 0 Posts
1fatcat is on a distinguished road
Default

Just incase anyone wants to know, it'* pretty easy to build your own simulator with parts from radio shack. I think I've seen even easier plans than this on the net, but here is one example.
http://mkiv.com/techarticles/oxygen_sensor_simulator/
1fatcat is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Anyone have MS Flight Simulator 2004? sandrock Lounge 3 11-16-2007 07:42 PM
paper plane flight simulator Gumball Lounge 61 06-04-2007 06:12 PM
o2 simulator bearsfaninwisc 2000-2005 3 03-26-2007 06:07 PM
Microsoft Combat Flight Simulator 1 Maymybonnieliveforevr Lounge 5 03-05-2007 06:16 PM
removing cat + O2 simulator = EGR malfunction? big_news_1 Performance, Brainstorming & Tuning 3 06-29-2004 03:38 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 10:18 AM.


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 Amazon.com and affiliated sites.