Question about 1993 Subaru Legacy

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Engine idling up and down when waiting on lights/parked on neutral. I replaced coil for new one thinking it would fix the problem but still not, car still lossing engine power idling up and down, few times engine goes off when waiting on lights. Is it fuel filter or some valve/regulator for air supply or maybe sensor for fuel supply. Plese help Thanks Car is Subaru automatic heritage 1993 liberty

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Lets try the basic stuff first. When was the last time you changed the air filter? When was the last time you had the fuel injectors cleaned? Try running a bottle of fuel injector clear to see if that helps you any. And when was the last time you changed the gas filter. All of the items will give you the symptoms your experiencing with you car. I don't think its a sensor at this point because you would be getting the check engine light on your dash.

I hope this helps you out, if it does please give me a YES that I did attempt to assist you. Thank you

Posted on Apr 09, 2011

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Try cleaning the idle air control valve. I have seen this many times before and it can happen with the newer models too. You will rarely get a check engine light for this issue

Posted on May 01, 2011


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