Question about 1999 Subaru Forester
So, my 1999 forester has a perfect idle, purs like a kitten. However, if I step on the gas too rapidly, the engine hesitates to respond. I am not getting any check engine codes, so i can't say it is or isn't a sensor. I replaced all spark plugs, air filter, fuel filter, and oil change. Using 89 octane gas. The only way i can drive it is if I very slowly accelerate. If I try to accelerate too fast, it hesitates and slows down until I release the gas and apply it slowly again.
Thanks for any suggestions.
I would try cleaning mass air sensor, its mounted in air duct between air filter and throttle body, they sell the cleaner at auto parts stores, also as stated bofore make sure the intake pipe clamps are tight and it's not cracked, if that doen't fix it i would investigate a fuel pressure problem either a weak pump or problem with regulator
Posted on Feb 20, 2010
Throttle position sensor causes hesitation on acceleration.if you not getting a check light.look for vacuum leak around the air flow duct to the throttle body.
Posted on May 24, 2009
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Posted on Jan 02, 2017
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