I am looking for heated oxygen sensors for my 93 the car keeps tripping a dtc13 and a dtc63 which is caused by a "cold" oxygen sensor meaning the sensors are not up to 600 degrees F it started doing this after i put in the longtubes and the temerature outside has been like 0 degrees so i am sure that that is not helping anything either. any suggestions?

You need a scan tool that will tell you if the 02's are getting the proper voltage. You can come by my house & I will check it for you

Or not worrie about it till the weather warms up?

Alot of people run into this with long tibes and are forced to use O2 simulators that you can buy from the likes of SLP, or LGMotorsports. These tell the computer all is well.

I don't advise using them but in some cases (such as the case you KNOW the engine is running correctly) the use of them is fine, BUT the O2 is a big sensor when dealing with ECM functions and a properly running engine.

Doug

I've gotten the fail code before but it would go out. I assume this means the sensor warmed up and began working. Of course the code is still in and needs to be cleared.

I've always been under the impression that the O2 simulators were for only the O2 sensors after the catalytics, and not for the O2 sensors before the cats. I would look into this more before going down this road.

You are correct, O2 sims are post cat only. Fuel Injected cars require active feedback from an O2 sensor to properly calibrate A/F.

Thats correct There are O2's in the long tubes that are suposed to be in front of the cats and a set after the cats. If no cats or problematic the sims are used in place of the second after cat sims only. It an O2 gives an error the PCM uses a default setting. It will not be as fuel efficient but if the O2 is just acting up because of the cold and is otherwise ok I wouldnt change anything - unless you live in alaska and its always cold. If it stays failed then replace it.

I had a sim in my 89 GTA and that car never wanted to run right. But I bought a heated sensor from RK sport and everything was coolio again.

i need the sensors and i drivce the car in the winter its my only ride and i can't afford another car right now so don't have a choice. oh and by the way these cars are a blast to drive in the winter with the right tires!!!

Yup, I should have written that. They are post cat only! (on cars with that type of set up! BUT a 93 doesn't have O2's after the cat!!! only 2 of them prior to the (1) catalytic converter.

Ok, sometimes if the location of the O2 bung is not as close to the head as it was with the prior set up (and it is always further away when going to long tubes) the O2 will not reach it's temp in time and set a code. An O2 sim can eliminate this problem BUT again then you are doing away with the important information that the 02 actually tells the ECM.

Doug

the winter sucks, fun for doughnuts in parking lots, stressfull on the road and horrible when you are snowed in (I spent an hour digging my self out of a spot, we got 10" of snow)

Does the 94 have post cat O2 sensors? what if you don't have a cat?
Stupid question but this is the first I've heard about post cat O2 sensors.

I don't think the 4 O2s were used before the dual cat era. I believe that started late 95.

Matt

yup, a 94 should have 1 large cat under the passenger floor.

Doug

Typically what would be good to do in order to "break in" an oxygen sensor. I replaced the one after the cat on a 95 firebird 3.8L and its an NTk brand after reading that BOSCH was not so good. so far I have ran it about 90 miles, about 50 of them under the highway and the rest stop and go in streets. any help appreciated thanks. oh the reason being is i need to get that car registered and im on borrowed insurance time.

Shouldn't be any need to break in a O2 sensor. It's a sensor, not a mechanical part.