How do i change the starter - 1994 Buick Regal Gran Sport

Assuming the starter motor spins but doesn't engage to turn engine over to start you could have a bad starter drive which is part of the starter assembly or possibly damaged/missing teeth on flywheel ring gear. Depending on year and model vehicle, some starters you can replace just the starter drive otherwise you need to replace the whole starter. If you changed the starter look at the flywheel.

you have a positive wire touching a ground in the starter or on the starter's wiring harness it could be in the positive battery cable

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DO ME A FAVOR CHECK THE BATTERY.

Replace the starter before it ruins the flywheel. You have a worn out drive that applies to the flywheel. Flywheels are very very hard to change, in fact you can change 10 or 15 starters in the same time changing one flywheel

if the starter is making a grinding noise when you turn the key, it's one of several possiblites. 1. Bad Starter. 2. Bad flywheel. 3. You need starter shims that fit between the starter and the motor. Most starters will bolt straight up but sometimes the gears get too close so you need to shim them apart.

did you change the solenoid with the starter or just the starter? if you changed both i'm not sure. if you just changed the starter and not the solenoid you should change the solenoid.

It's most likely the "bendix drive" in the starter kicking out. It's the part that engages the starter to the flywheel. Changing a starter without changing the solenoid is like having a slice of bread without any butter. Change them as a pair. Hope this helps.

the starter selinoid is on the starter itself. normally a parts dealer will never seel you a starter selinoid individually but they will sell the starter with the selinoid. but you cant change the selinoid without changing the starter

Starter are one of the easier mechanical engine parts to change.

1) DISCONNECT THE BATTERY.
2) Disconnect the electrical cable running to the solenoid on the starter.
3) Remove the two bolts holding the starter in place.
4) Pull the starter out.

To install another starter, do the above steps in reverse order in reverse.

Ford starters have a solenoid that is a relay to the starter. I could not read the rest of the problem? Got changed ignition, starter and....