The check engine soon light on?

The check engine soon light went out on it's own. I have lubed the throttle linkage and so far it runs well and no light. Guy paris

My 96 Sable wagons CEL came on, so I went to Auto Zone to have the code checked. They told me it was the O2 Sensor after the catalitic converter, bank #1. I purchased a new Bosch O2 sensor fromthem and they told me to disconnect the battery and then change it, code will reset. I did that and after 19 miles the CEL came on again. I am assuming the "new" O2 sensor is not defective. Do I need to have the CEL "reset" some other way?
Thanks!

The service light will not go off despite the fact that it came on prior to the usual 5000km service schedule and when checked, the oil, radiator fluid, transmission fluid and brake fluid were at their correct levels. The car runs well and makes no noise.
The garage ran a check and were uncertain of the cause. They were able to switch the light off but it has come on again and has switched off for a short period and has returned again.
The car mechanic says that there is nothing to stop us from driving the car as it runs well but we are concerned about that light.
I should be grateful if you can help solve the problem.
Thank you in anticipation,
Bryan Naylor

I have a check engine light on, not all the time. When it is on the transmission is not shifting right. I can only get up to 45mph at 3000rpm. What can this be?

I've tried to pull the code and it wont show. I did it by jumping the eec under the hood like it showed me on the computer and the light goes off.

No I don't have one of those. The attached image is how I did it. I used a jumper wire instead of a test light.

What kind of different way that I can try because I don't have a scanner, and I've been trying to pull the code all day, I know the code is what I need. I really need to get this car going because it's my only way to work. It started doing this yesterday. Thank you for your help.

Thank you, I will try to contact a buddy that might have one of those. I will get back with you and let you now the code.

I also have a 1995 Mercury Sable that I'm desperatley trying to get back on the road. I got insurance and tag on it and broke the next day. Check engine light comes on after running a few minutes and runs bad with black smoke coming out of tail pipe. It seems like it's not shifting right. It will only do 45mph at 3000rpms. I tried to pull the code with a friends scanner and it wont pull. I've tried jumping the eec and using the scanner. My friends scanner is a snap on with right adaptor and computer card.