Check for loose or corroded battery cables Check trigger wire on starter (small wire) for corrosion (common problem) Bad starter solenoid
is the battery fully charged?
Remove the starter and haeit checked at auto parts for amp draw Check the alternator to see if it is keeping the battery charged Check engine ignition timing may be too far advanced
Is starter working?
If a 94 Thunderbird starter will not turn over, the battery may be dead. The battery should be charged with jumper cables.
Test the battery with a digital voltmeter. You should get a reading of 12.6 V if the battery is fully charged. If the battery is fully charged then you know the alternator is functioning properly and your problem is more than likely a defective starter.
If the starter will not engage on a 1994 Geo Tracker, it is possible that the solenoid needs to be replaced. There could also be a loose wire on the starter solenoid. Also check that the battery is fully charged. The battery could have gone dead while it was being driven.
Can be a defective ignition switch which I suspect is your problem. Not the tumbler you insert the key into but the ignition switch located down under the dash behind the steering column. Can also be a loose or corroded battery cable, or the connections at the starter. There is a starter solenoid that can be bad but it is built into the starter which you replaced.
First make sure the battery is fully charged and all wiring is tight and not corroded. If all is well then remove the starter and have it bench tested at any auto parts store.
Starter solenoid? Battery not fully charged?
Check the battery and see if it is charged or needs to be changed. Check the battery cables Check the starter condition
Check the starter.
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....