Question about 1994 Geo Prizm

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I have 1994 GEO Prism. I have an acceleration problem. The car was accelerating good until about a week ago. I stoped and got gas the night before and went I to go to work the next day and the engine is very slow to accelerate from 0 to 25 and slow to get up to speed. this happend over night. I changed the fuel filter and the air filter, but it did not fix the problem. Also I think my fuel milage drop in half.

Posted by Anonymous on

  • Anonymous Mar 17, 2011

    I did not fill up only put in about a gallon of gas that night. We have refill the fuel tank over three time now and have added Gas treatments.



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Sounds like you got some bad gas as it happened right after you got gas. take a fuel sample and see if it has water in it also if you got some with a high ethanol content it would do this. did you fill up? if it is around half tank or under fill up with some good gas and just run out

Posted on Mar 17, 2011

  • TripleTauto
    TripleTauto Mar 17, 2011

    might wanna try a set of plugs. could have an 02 sensor pushing the computer to run it rich. pull the plugs and see if they are black and sooty looking. if so it is running too rich and will really need a scan tool to read the data and see what is causing this.



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