2. If you can't hear the relay "thunk" then you have to trace the connections from the ignition switch, thru the transmission park and neutral switch and to that relay. 3. If the relay "thunks"(meaning it is working) - then you must check the battery cable connection on the starter, relay and battery. A voltmeter is helpful here and an assistant to turn the key for starting while you read the voltage. Loose connections are 90% of all problems. A blacken, burnt looking connection or wire means it overheated because of a loose connection.fix it!
Check tightnees on all the 12 volt connection.
Dead starter?
If you have just replaced this starter then you probably have it hooked up incorrectly. If it is still the same old starter, then it has shorted out inside and needs to be replaced.
Check your starter, and all power connections.
Did you check your starter?
might be starter relay, or the crank circuitry from the switch or to the starter from the relay. I would trace back from the starter to the starter relay back through the neutral safety switch to the ignition switch.
It could be the starter in it. It may be weak or need replaced.
i had similar problem with 99 wrangler and if its the relay its located in the fuse box.
Have you checked to be certain that the wires are still firmly connected?
since you have replaced the starter, the mostlikely cause is the flywheel. there are probably a few teeth missing on it. Try turning the engine manually a little and then start the engine. if it starts this is probably the case. if not the fly wheel may still be damaged.
check your battery, maybe it's time to replace it
The problem isn't your batter or alternator or starter then. Start looking into your fuel management system. Possibly your fuel pump, injectors, etc.
it could be that ignition switch or wires to it. wires to the starter.