Question about 1993 Saturn SL1

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Throttle Position sensor

The cars spitting out lots of smoke flodding itself and over and under reving is this the problem if so where can i find a good diagram that shows me where its at

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  • estell
    estell Jan 25, 2009

    ive already replaced the coolant temp sensor and the pcv valve but no no avail it still has the same problems


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The coolant temp sensor is bad if you had a scanner it would tell you that is about 40 below this will give a very rich condition. the sensor is about 10 dollars and located on back of head over the transmission.very common problem.

Posted on Jan 25, 2009

  • 1 more comment 
  • mike loshbough
    mike loshbough Jan 25, 2009

    tps should be on the throttle body.there are two coolant sensors one for the gauge and one for the computer they look about the same and are located in about the same place,it should be the one on the bottom.

  • mike loshbough
    mike loshbough Jan 25, 2009

    also check map sensor

  • mike loshbough
    mike loshbough Jan 25, 2009

    i give a good score to someone who says could be a number of things but two people tell you coolant sensor and you say thanks for probably replaced the wrong sensor i bet the plug was hard to plug in.!


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