o2 simulator question
Thread Starter
Teching In
Joined: Oct 2002
Posts: 25
Likes: 0
From: Tennessee
o2 simulator question I have run into a small issue with my front 02 sensors and I'm trying to find the best solution. I am swapping a 99 vette ls1 into a 95 chevy 4wd. I have had to swap to camaro manifolds in order to clear my front differential. So, the driver's side 02 sensor wiring is to short. It tells me in the vette service manual not to tamper with or extend the wiring. I assume this is because even a little bit of wire would cause somewhat more resistance???? Plus, on the passenger side the camaro manifold is not taped for an 02 sensor. So I would have to get a tap to place one there. I am considering getting some of the 02 simulators and solving both problems. Does anyone know a good source to find these. Any other opionions or ideas here? I'm open to suggestions.
Thanks,
Davey
By the way, I might should add that I don't have rear 02s and John programmed the PCM to run accordingly, so they are not an issue.
Thanks,
Davey
By the way, I might should add that I don't have rear 02s and John programmed the PCM to run accordingly, so they are not an issue.
On The Tree
Joined: Oct 2002
Posts: 194
Likes: 0
From: Tampa, Florida
Re: o2 simulator question You are going to have to run the forward O2's. Somebody had extension harnesses---I just don't remember who. I'm pretty sure they are a sponsor though. You can get a O2 bung anywhere and get it welded on the manifold/pipe. As far as the manual telling you not to tamper with the wiring, I think it's a resistance issue. It's all about millivolts here. The splices are where you could run into problems. I think it can be done.
Re: o2 simulator question The front O2 sensors are required for the engine to run. That is how the engine determines if it is lean or rich. Without them it will run like crap. Trust me.
The rear O2 sensors only tell the computer how well the cats are working. Without them, the computer will think the cats are bad but will not affect performance. The computer programming you mentioned to get it to run without the rear O2's just turned off the SES light. It didn't actually affect the programming of the computer.
A lot of the header manufacturers sell O2 extensions. Just check with any of the sponsors and someone can help you.
The rear O2 sensors only tell the computer how well the cats are working. Without them, the computer will think the cats are bad but will not affect performance. The computer programming you mentioned to get it to run without the rear O2's just turned off the SES light. It didn't actually affect the programming of the computer.
A lot of the header manufacturers sell O2 extensions. Just check with any of the sponsors and someone can help you.
Re: o2 simulator question </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> So, the driver's side 02 sensor wiring is to short. </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">NO IT ISN'T!!! Just peel back the wiring harness and release the wires from the main bundle and it will be plenty long enough! I did this and now my front O2's read from the collectors on my headers which have 32" long primaries and a full collector. My point is...I relocated my driver's side wire and O2 sensor about 24"!!!! It can be done <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Joined: Nov 2001
Posts: 1,707
Likes: 33
From: Anderson, Indiana
Re: o2 simulator question Let me know what you want. We can CORRECTLY make them to any length you need!
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91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
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On The Tree
Joined: Dec 2008
Posts: 165
Likes: 0
From: West Mich
The front O2 sensors are required for the engine to run. That is how the engine determines if it is lean or rich. Without them it will run like crap. Trust me.
