My 2000 impreza rs doesnt start.It wont even crank. When i turn the key to start, there is no noise.my battery if fine since my radio, horn, and headlights are functional.I just put in a new starter and still nothing.

Sounds like an Ignition Module or similar device. Does it have an alarm? Turn the key to ON - not start - and put into Drive and then back into Park. It may be the shifter isn't fully engaged. Also, w/your FOOT ON THE BRAKE shift to Neutral and try to start it.

GL,
Td

Replace battery terminals and/or clean battery posts. Horn and radio don't use as much juice as starting. Sounds like a lack of amperage or electrical pressure to push the starter motor. Also check battery. Needs 12 or more volts and about 600 or more cranking amps.

Sometimes dirty battery posts cause this issue. Get a wrench, remove the cables from the battery, scrape posts and cables shiny clean and re-install

Have you tried jump starting it? If it will start this way, then either your battery is going bad, or the alternator is not working properly.

If it will not start (not even turn over) with a jump, then the starter may be bad. Good luck...Chris

try the crank position sensor. the one on the bell housing

Try checking your battery post conections.

THERE IS SOME DUST IN YOUR CARBONATER.....

Could be a bad starter motor or a bad starter switch.

Good for you as you already have an idea.

Check your battery and the starter. It's a minor issue.

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Sounds like the battery is dead, you have just enough power to have the lights come on, but no cranking of the starter. Try putting the battery on a trickle charger, or hook up jumper cables to another car which is running. Let it run with the jumper cables connected for two mintues before you try and start your car.

sounds like you need a new battery, it probably isnt running enought cranking amps to start your car, try a different battery and it should start fine