SOURCE: subaru vibration
I had similar problem with my '99 outback. Replaced the front half shafts and seemed much better. A few months later seemed to be comming back so replaced the driver side shaft again and the problem disappeared. I had put in rebuilt shafts and the driver side shaft was not rebuilt correctly.
SOURCE: car lurches and bucks, rpms erratic on acceleration on hills
You could have any of these problems:
1) vacuum leak- broken air hose or disconnected air hose.
2) water in the gasoline- add a water remover to you gas tank.
3) bad or disconnected spark plug wire(s).
If this were my Forester, I'd take it to a mechanic who has a electronic engine tester..
SOURCE: 2004 subaru forester, 99,000 miles. Check engine
Drop in to an Autozone, or Pep Boys, or similar big parts store & they will usually scan for codes free. This will hopefully eliminate all the guess work, or at least point everyone in right direction for better diagnosis. If not obvious from codes what the problem is, get back to us and we'll help you out.
Testimonial: "Thanks for the great suggestion . I'll have Autozone read the codes on Monday. Thanks again!"
SOURCE: my subaru was running fine and later on the
Try changing the ignition coil.
The easy way to test this, is turn the ignition on,for about thirty second's ,then feel the coil ,if it is hot ,replace it.
SOURCE: 93 Impreza hesitation at low rpm light backfire
Check the WOT sensor. WOT = Wide open throttle.
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