What made you think any of those parts were bad? Or is this just a case where you were taking the "shotgun approach" to automotive repair? Many people seem to think that if you replace enough parts you'll eventually find the faulty part, but unfortunately that approach often leads to MORE problems. If a part wasn't installed properly it can introduce ANOTHER failure, making it even more difficult to diagnose the original problem.
Try this:
Climb under the vehicle and "jumper" the starter. If you don't know how to do that perhaps it would be good to get someone involved who can help. Basically it's just engaging the starter manually by running a jumper wire to the SMALL starter connection that engages the starter. If the starter engages when you do that, there is no problem with the starter and you can attempt to trace the problem back.
Next, find the neutral safety switch and test it. See if you're getting electrical current from the keyswitch TO the neutral safety switch when you try to engage the starter from the keyswitch.
When diagnosing automotive problems it's essential that you break up the problem into discrete steps during which you test individual components, and NEVER replace parts until you are absolutely certain that they are bad.
Check the battery cables or starter.
Voltage Regulator?
You need to replaced the starter or the alternator.
check your alternator or make sure the starter is on correctly
Starter Ignition Neutral switch
could be the alternator or starter sounds like the alternator if the battery is gone flat get the alternator tested at auto parts or garage jump charging the battery might get you out of trouble for a bit
Check the alternator if that don't do it change the battery
u might need a new starter
Double check the battery cables at the battery and at the engine, be sure they are clean and tight.
Indirectly. The positive cable on the battery is hooked to the starter. The other wire on the starter post goes up to the alternator.
Is the battery/alt warning light on? if they didn't disconnect the battery while the starter was being replaced and they accidently shorted the battery cable out it could have damaged the regulator of the alternator some of the Delphi regulators are very sensitive to that, but if it tested normal at the parts place, does it run down while driving or while sitting?
I have a 97 Sonata. I recently had my car NOT turn over at all. I replaced the battery and still nothing. I then jumped on the internet and I read about listening for a "Click" when trying to turn over the engine. I needed a new starter. Once replaced, they changed the alternator belt as well and the car started right up. Maybe a new starter is all you need. (My car also has 170k miles on it and was told it was a very good mile to get a starter replacement. 250.00 bucks for all I believe....