Question about Saturn SL1

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98 Saturn SL 1 sputters

My 98 Saturn Sl1 sputters when I drive at high speed (passing) or going up-hill; when I use high octane gas (premium) instead of regular it will not sputter. Please help.

Thanks

12 Rod

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  • John Rodriguez Jun 10, 2008

    Why does it run better -does not sputter on a heavy load- with premium gas; although at current gas prices I don't want to only put premium ( high octane) gas in my car always.



    Please help,



    Thank you



    12 Rod

  • Anonymous Mar 28, 2014

    Saturn 300L loses power when you go up hills

  • Anonymous Mar 29, 2014

    1.9 litter torque specs for rod bolts

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Have a scanner hooked up to your car and do a data stream to see if your knock sensor is still working. On a heavy load, if the ECM detects detenation in the engine, it will automatically want to ****** the timing to make it run better on a load.

Posted on Jun 10, 2008

  • Lee Quiroz
    Lee Quiroz Jun 11, 2008

    It runs better because of the extra octane in the fuel. This is why folks with race cars will run 110 octane fuel with their 12:1 high compression engines. It allows more timing to be put in and puts out more power.

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