I put a new temp sensor in and it it doesnt work. and its giving me a code 15. I have no Idea what it is. would this cause my car to run like crap and backfire? I have no clue what it could be.
BTW I used teflon tape to install would this have anyhting to do with grounding the sensor?

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91 Z28 5.7l Camaro
T-56,McLeod Street Clutch, Cross Drilled Brakes, KYB's,AFPR, 3.73 Gears, Borla Adjustable Cat Back, Hypertech Chip, Hooker Headers.
more to come....
My 91 Z28

 

I don't know about the code 15, but I'm pretty sure the teflon tape is causing some problems there...

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89 iroc-z 305 tbi
k&n filtercharger, open element air filter. nuffin' else

 

Chris,

Which sensor did you replace, and are you certain you got the correct part?

The CTS for the ECM is an analog resistive device, while the sensor for a secondary fan is merely a temperature switch. The two do not interchange. The DTC '15' means the CTS circuit is open (disconnected) which is exactly what you would get with a temperature switch connected to the CTS input for the ECM. Once the coolant warm up and closes the switch, you'll get a '14' DTC.

You can check the resistance of the CTS at a given temperature and compare it to the table:

 

No I meant the coolant temp sensor is what I replaced. and it makes a code 15. you think it could be a short in the wiring?

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91 Z28 5.7l Camaro
T-56,McLeod Street Clutch, Cross Drilled Brakes, KYB's,AFPR, 3.73 Gears, Borla Adjustable Cat Back, Hypertech Chip, Hooker Headers.
more to come....
My 91 Z28

 

Chris,

I understood the original post, and was wondering if you somehow were given the wrong sensor as a replacement. If a temperature switch were installed in place of a resistive sensor, the problem you are describing would occur.

Check the resistance of the sensor. If it is open (infinite resistance) you have a dead sensor or a switch in place of the sensor. The '15' DTC generally indicates an open sensor circuit (no wiring connection or open sensor). If you had a short, the code would be a '14'.

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Later,
Vader
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"Fear is how I fall, Confusing what is real..."
Adobe Acrobat Reader

[This message has been edited by Vader (edited May 14, 2001).]

 

Do both of the sensors look the same

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91 Z28 5.7l Camaro
T-56,McLeod Street Clutch, Cross Drilled Brakes, KYB's,AFPR, 3.73 Gears, Borla Adjustable Cat Back, Hypertech Chip, Hooker Headers.
more to come....
My 91 Z28