the red fiero is using way to much gas
whats the technical spec's for the O2 sensor in a fiero, I want to try to match up one i can find here.
What else will make the fieros use way to much gas?
i need the correct Ohms resistance of a good O2 sensor

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Allen
Blue Mountains Fiero's
Australia
86 gold SE
85 red SE
01161412119530

You can't check an O2 for ohms. Yes it does have a resistance but it's no good for knowing if it is good or not.

An O2 has to get to around 900* and then it starts putting out a small voltage between around .1 and .9 volts.
You can use Winaldl to check it by monitoring the voltage swing or you can put a meter on it to watch the voltage while the engine is running.

Here is a good article if you want to know more about O2's. It's for a 4wire but that is because of the heater, they work just the same.

http://mymiata.paladinmicro....htm#O2SensorTesting

[This message has been edited by Dodgerunner (edited 12-02-2007).]

thanks
I did have a honda HRV that you guys don't get in the USA
The O2 sensor failed and the guy that came to check it out told me that its a wire coil and should be 110 ohms.
i thought it was the same thing but looks like its different
i wil fit it in the car again and start the motor, then check it like you said.

quote Originally posted by Dodgerunner: You can't check an O2 for ohms. Yes it does have a resistance but it's no good for knowing if it is good or not. An O2 has to get to around 900* and then it starts putting out a small voltage between around .1 and .9 volts. You can use Winaldl to check it by monitoring the voltage swing or you can put a meter on it to watch the voltage while the engine is running. Here is a good article if you want to know more about O2's. It's for a 4wire but that is because of the heater, they work just the same. http://mymiata.paladinmicro....htm#O2SensorTesting

With the engine warmed up and running, ground the ALDL diagnostic terminal, that's the one you ground to get trouble codes. The check engine light will start blinking on and off, the amount of time on should be equal to the amount of time off, and indicates the O2 sensor rich/lean voltage status. If the on and off times aren't approximately equal and switching back and forth fairly rapidly then there's a good chance the sensor is bad.

The sensor itself is a generic 1-wire GM sensor, very common and easy to find. In the states they can be had for about the same price as a used tire.

JazzMan

Read my post in this thread and you can read how to do the SES light thing...

https://www.fiero.nl/forum/Forum2/HTML/087989.html

You can't "match up" the V6 O2 sensor but the 80's GM one wire O2 sensors are nearly all identical. Using a proper O2 sensor is critical to proper engine operation, even different brands of sensors don't work well, let alone ones from different vehicles. Bite the bullet and use an original GM AC Delco sensor if you can. They run about $40 here in the USA. If you can't locate a GM sensor then the next best bet is the Denso. Bosch will also work but they don't last anywhere as long as the OEM sensors do.

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87GT - with 3800SC Series III engine, 4T65eHD
87GT - 3.4L Turbocharged engine, modified TH125H
" I'M ON THE LOOSE WITHOUT THE JUICE "