Help.... My service engine soon light is on in my 2000 Grand Prix.?

Question

I took it to Autozone & they told me it was the O2 Sensor. I replaced it but it still won't turn off. It's using a lot of gas & I don't know what to do. I thought it might be defective, so I took it back & exchanged it & it still won't work. Could I have replaced the wrong one? It is located on the bottom front right? Somebody please help..... I don't know what else to do. Thanks!!! :)

Answer 1

take it to a reputable car shop!

Answer 2

OK first off some cars have more that one O2 sensor. Autozone should be able to test them or better yet tell you how to test them in the car. Did your autozone just guess or did they hook up a computer and tell you the problem? The trouble code in the cars computer may have to be reset. Although this should happen when you turn the car off. It could also be the wiring going too the sensor as well. Good luck!

Answer 3

Hi The O2 sensors measure the unburned fuel in your exhaust and are designed to fail 'rich', meaning the fuel mixture would be too high. There may be 2 or possibly 4 O2 sensors in your car. A good mechanic will have a reader to check how everything is working. I would suggest this first.

Answer 4

Cars that new can have up to 4 o2 sensors, 1 on each manifold, 1 before the catalytic converter and one after the converter it's best to replace them all at once because sometimes in rare cases just changing one can make a different one go bad

Answer 5

It could be several different things. The best bet is to take it to a Pontiac dealer to get it diagnosed. There are so many possibilities that could be causing the problem. You might wind up spending more money in the long run by quessing and throwing parts at the problem than you would by taking it to a place that can pinpoint the problem with the right test equipment.

Answer 6

what was the code the o2 sensor's might not be bad they can set a code if your car is running rich(to much gas fumes in exhaust) lean (not enough gas fumes) the front o2 sensors are heated could be a bad wire need more info to tell you more get the code again most scan tools tell you what the code means

Answer 7

There could be more than one problem, so have them check again.
If you buy a auto repair book like Haynes, it will tell you in the emissions control section how to use a jumper to read the codes from the check engine light.
On my vehicle by jumping out two terminal and turning the ignition switch to ON, the check engine light will flash a sequence of flashes to indicate what the problem is.
May be your local library will have the book so you won't have to buy it.

Answer 8

first mistake was taking it to a parts store, Using more fuel than normal? don't know, however i do know that you hafta get the light reset so that it will turn off. Try turning the key to the on position, not starting it, but just turning it on, then push the gas petal three times and that should reset it. I know it sounds like bs but trust me.

Answer 9

it could be that you need to put the engine key in the little hole next to your engine light, i had to and it went off. also you could take it to tuffy or midas or some place like that where they will look at it for free and do a free estimate for you. that way you can see what is wrong with it. it sounds like you are pretty handy in the garage so whatever they say is wrong with it I'm sure you could replace or fix it. good luck!!!!

Answer 10

The mechanic place who checked your motor vehicle ought to get extra data approximately those codes by making use of checking the freeze physique practise. it must be not something intense! or this is a plug connecting some components this is getting lose! you are able to visually examine if all wiring is decrease back to a similar area and firmly plugged. stable success.

Answer 11

If you replace an O2 sensor the computer had to be re-calibrated....did you do that?