Heated or not?
Thread Starter
Pro
Joined: Oct 2004
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From: Clarksville Tennessee
Heated or not?
I installed a set of TPIS headers and Y pipe. I re-install the stock O2 Sensor. My Question is do I need to switch to a heated O2 sensor? What is the difference between a heated sensor and stock sensor, and do I need to make the switch?
Team Owner
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From: Athens AL
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It is not required. I see no reason to install one unless your stock one is original or going out, and youre going to be replacing anyway, unless you are having open/closed loop issues. I do not run one with my headers, and dont plan to.
Difference is that the heated one is hooked to a 12V source and sends good signals to the ECM at lower exhaust temperatures, so the car doesnt drop out of closed loop at idle or part throttle with the heated O2.
Difference is that the heated one is hooked to a 12V source and sends good signals to the ECM at lower exhaust temperatures, so the car doesnt drop out of closed loop at idle or part throttle with the heated O2.
Thread Starter
Pro
Joined: Oct 2004
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From: Clarksville Tennessee
It is not required. I see no reason to install one unless your stock one is original or going out, and youre going to be replacing anyway, unless you are having open/closed loop issues. I do not run one with my headers, and dont plan to.
Difference is that the heated one is hooked to a 12V source and sends good signals to the ECM at lower exhaust temperatures, so the car doesnt drop out of closed loop at idle or part throttle with the heated O2.
Difference is that the heated one is hooked to a 12V source and sends good signals to the ECM at lower exhaust temperatures, so the car doesnt drop out of closed loop at idle or part throttle with the heated O2.
... I had my vette for a few years, and I still have a few things to learn about it. I'm no stranger to carburated engines, but TPI I'm still learning. Just one more question. Could you explain open and closed loop? Does it have to do with the engine reaching the temp to adjust the idle?
Team Owner
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From: Athens AL
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Basically open loop is after startup, when the mix is rich, and the O2 is ignored.
Closed loop is when it uses the O2 to adjust the mixture, and your gas mileage goes up.
Further is on my site.
Closed loop is when it uses the O2 to adjust the mixture, and your gas mileage goes up.
Further is on my site.
Thread Starter
Pro
Joined: Oct 2004
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From: Clarksville Tennessee
Le Mans Master
Joined: Aug 2000
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From: Australia
The set with the sensor in the collector drops out from cooling at idle requiring a heated sensor to read correct.
Race Director
Joined: Sep 2003
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From: Database Error Indiana
Just for reference, I am 100 miles north of you, and I have the TPIS headers. The car goes to closed loop and works fine even in the winter with the stock O2 sensor.
Le Mans Master
Joined: May 2000
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I've run TPiS headers for 8 years and you DO NOT need a heated O2 sensor. I live in the land of fat women and cheese too so it gets a little colder here.
On the other had maybe you do need a heated O2 if some CFC4T expert that has never run these headers tells you that you do.
On the other had maybe you do need a heated O2 if some CFC4T expert that has never run these headers tells you that you do.
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Team Owner
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From: Athens AL
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Yes some brands have the sensor further away, or may not be coated at all, thus some feel the heated one is needed.
For the OPs headers, it is not that way.
Last edited by vader86; Jun 14, 2007 at 11:27 PM.
Le Mans Master
Joined: Jan 2002
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From: Edmonton AB
O2 sensor.
For others with a sensor in the collector, such as the Stainless Works
pipes, a heated sensor can make the difference between achieving/retaining
closed loop quickly - vs - not achieving CL or dropping in & out because the
unheated sensor is not hot enough to generate a signal.
.