Heated 02 sensor?
Thread Starter
Instructor
Joined: Dec 2004
Posts: 142
Likes: 0
Heated 02 sensor?
Anyone running a heated 02 on a system that was previously a 1 wire? Has anyone noticed any MPG increase or other benefits from running a 3 wire vs. a 1 wire? If so, does anyone perhaps have a part number handy on a 3 wire.
The two systems I am looking to do this on are an 85 Corvette and an 86 Corvette setup in another vehicle.
Thanks a bunch. I appreciate the help and information.
Dylan
The two systems I am looking to do this on are an 85 Corvette and an 86 Corvette setup in another vehicle.
Thanks a bunch. I appreciate the help and information.
Dylan
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Originally Posted by siggy_freud
Anyone running a heated 02 on a system that was previously a 1 wire? Has anyone noticed any MPG increase or other benefits from running a 3 wire vs. a 1 wire? If so, does anyone perhaps have a part number handy on a 3 wire.
The two systems I am looking to do this on are an 85 Corvette and an 86 Corvette setup in another vehicle.
Thanks a bunch. I appreciate the help and information.
Dylan
The two systems I am looking to do this on are an 85 Corvette and an 86 Corvette setup in another vehicle.
Thanks a bunch. I appreciate the help and information.
Dylan
Jake
Melting Slicks
Joined: Oct 2002
Posts: 3,193
Likes: 1
From: Cincinnati Oh
I agree with JAKE, they're supposed to operate the same way. but other threads have hinted at better idle and a slight increase in MPG from the non-heated types. Whether that's because the sensors (that were replaced by the heated kind) were fouled and inaccurate or because the replacements were simply of better quality - or even a placebo effect of sorts - I do not know.
I would think that the heated O2 was implimented for a reason and I suspect that extended idle/cold starts/coasting situations might benefit from the heated sensor.
I would think that the heated O2 was implimented for a reason and I suspect that extended idle/cold starts/coasting situations might benefit from the heated sensor.
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
I agree, could be because it's a fresh 02.
Engine doesn't go closed loop any sooner because the timer still has to count down from start up.
Many other mid-80s GM engines, I believe 6 cylinder jobs, come with heated 02s.
From everything I've read it only has to do with the temp issue.
Jake
Engine doesn't go closed loop any sooner because the timer still has to count down from start up.
Many other mid-80s GM engines, I believe 6 cylinder jobs, come with heated 02s.
From everything I've read it only has to do with the temp issue.
Jake
Team Owner
Joined: Sep 2001
Posts: 62,171
Likes: 1,735
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
A heated O2 wont make a difference in gas mileage compared to a regular sensor, its only going to stay in closed loop when the other would drop out of closed loop.
You'll see more of a difference in just changing out the old sensor for a new one, than switching from regular to heated.
The only difference in the sensors is an extra ceramic shielding that keeps the sensor element warm and smaller openings to retain that heat.
You'll see more of a difference in just changing out the old sensor for a new one, than switching from regular to heated.
The only difference in the sensors is an extra ceramic shielding that keeps the sensor element warm and smaller openings to retain that heat.
