not so fast mr. goodwrenchs
not so fast mr. goodwrenchs
Still could be battery. even though the lights, radio and horn work does not mean that the battery is good. a car needs 9.6 volts to crank the engine anything less will not supply enough voltage to crank the starter. also a bad ground is possible. my suggestion to you before you take it some goodyear, firestone or whoever may want to give you the good ole screw is to do this.
take battery cables off and look for corrosion, if present clean cables. also check to make sure the ground is fully secure to either the chassis or engine block. ground wire should be fasten tightly and corrosion free. also take battery out and have it fully charged and load tested. auto zone will do this for free but always better to find someone who has a battery charger then take it to them for a load test. if battery falls below 9.6 volts during 15 second load test it is no good.
if battery checks out to be good, ground and cables are also good then most likely you have a starter problem.
only time an alternator can cause this problem is if it is drawing a charge while car is sitting. bad diodes. very rare but possible.
simple rules to remember about your car. the batteries main purpose is supply voltage for starting it, starter is there to crank the engine, alternator is for once it is running, to supply enough voltage to keep car running via all the electronics involved. it is more complex then this of course but simple things to remember.
if problem is a battery. buy the correct one for your climate. live in cold weather area need more cranking amps. the more the better. engine needs the most cranking ability available during colder weather. live in warm weather area cranking amps not that important, buy what is the minimum for your car.
gl