Question about 1995 Saturn Sl

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Car idle high

Check engine light is on when this happen it's a 95 Saturn 4 cylinder. How do I pull the codes manually? and is there any advice to what might cause a problem like this?

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  • Jerry Parmanand Feb 09, 2009

    codes 32 33

  • Jerry Parmanand Feb 10, 2009

    thank you very much for your help, I know that the EGR valve is locate close too the exhaust manifold but i can't seem to find it.

  • Jerry Parmanand Feb 10, 2009

    Thank you very much my problem is fix, good man.

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Zab, You will need a "scan" tool to read the codes. There are several after market shops the will do this for you free. Auto Zone and others will want to sell you their parts so will pull codes for you.
Let me know what codes you find.
Regards,

Posted on Feb 09, 2009

  • Bruce Bracey
    Bruce Bracey Feb 10, 2009

    Zab....Some Saturn models up to 1995 could have the codes pulled by shorting together terminals A and B at the ALDL connector. Terminal A is ground and B is the diagnostic request line. If your vehicle has that capability, the service engine light will begin to flash specific codes. For example, code 12 will flash once then pause then flash, flash indicating the 1 pause 2. If this does not work you will have to find a scan tool to pull the codes.



    The code 32 is an EGR code and 33 is a MAP sensor voltage is out of range and too high.

    The MAP code is likly due to the EGR. The EGR is most likely sticking or not seating and causing an exhaust leak into the engine intake when it should not be ( typically the engine runs rough at idle). The engine vacuum drops and causes the MAP sensor to set a code.

    If the above is true, I would remove the EGR and clean the carbon deposites.

    Let me know.

    Regards,

  • Bruce Bracey
    Bruce Bracey Feb 10, 2009

    Zab, The EGR should be located on the left side of the engine (drivers side), between the engine and battery. It should be vacuum operated or could be a linier valve (electronic).

    Let me know.

    Regards,

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