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My father called today to tell me that when he steps on the gas in his 99 Subaru Impreza (at normal operating temperature), the car moves dangerously slow. Does anyone else have experience with this issue and how to fix it? He was a master mechanic in the old days but never learned how to repair cars in the electronic age.

Thanks for your help.

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Is this a turbo engine? –  Paulster2 Feb 26 '14 at 11:05
Also, what transmission? Is this a sudden problem? Did the car work fine and then cease accelerating? Or has it become worse and worse? –  Bob Cross Feb 26 '14 at 19:27
Don't have all your answers. All he told me is that it is a 2.2L engine and is an automatic. I believe the problem occurred all of a sudden and was not a gradual thing. I do not live near my dad so i have not seen the car lately. –  user4578 Feb 27 '14 at 2:28

1 Answer 1

Welcome to Stack Exchange :)

Poor acceleration is sometimes caused by dirty spark plugs or clogged air filters. Keep in mind that the spark plugs are probably more difficult to reach on a 99 Subaru than most other cars since the Subaru has a boxer engine. But, if you feel up to it, you could try replacing the spark plugs ( and/or air filter if necessary ) and see if that helps the issue.

There are very few clues to go off of here though, poor acceleration could be caused by many different things. With only one symptom it's hard to diagnose the problem with any accuracy, and as costly as it can be, the solution here might be to take it to Subaru mechanic.

Hesitation or low power at slow acceleration

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+1 spark plugs! –  AM_Hawk Jan 21 at 22:45

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