Question about 1999 Subaru Impreza

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Accelerating hello. i have a 1999 subrau impreza. i changed the oil (10w-40),oil filter, fuel filter, the belts except the timing belt and now its accelerating sluggish. i had premium(93) gas then put regular (87). on the subaru old oil filter it siad to " refer to owner manual for replace interval" what the hell is that! i even dont know it is a 2.2l or a 2.5l. what octane is this car toned for?

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  • Chuck May 11, 2010

    make sure the alternator belt is tight.

    i just want to confirm the sluggishness only started with the tune-up or was it there before the tune-up?

    maybe when you fueled up you got some bad gas.



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Once you change fuel octane it may run sluggish because the car is used to running at a better octane to run more efficient. go back to 93 and see if that may change it back to normal (note that it may take your car a few runs to get back to normal)

Posted on Feb 23, 2009


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