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2003 Ford Taurus Question: If an O2 sensor is it will it always turn on a check engine light

 

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mehmet, Maple Falls, WA, November 27, 2013, 01:21
 Rookie

The thing is when I start reving at about 5000 my car trys to shut off but I think it is an O2 and how many are there anyways?
And it also starts doing the same thing as I am slowing down almost as if it doent know how much gas to send to the engine.
The mechanic said one O2 sensor wasn't working properly but I dint want anymore testing because it was costly

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  • Answer #1

    November 27, 2013, 01:28
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     Master

    Testing is a lot less costly than guessing! That is all we can do without some test info. Did you get any trouble code numbers for the check engine light from the mechanic?

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  • Answer #2

    cardocIII from Gillespie's Auto Service, November 27, 2013, 05:30
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    Why are you hitting 5000 rpm?

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  • Answer #3

    Greg's Orange Auto (14262 Answers) , Orange, CA - (714) 361-9386
    globalhelper November 27, 2013, 06:08
     Master

    agree get diag codes to proceed. there are test procedures for each circuit on o2 sensors

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