The Bendix on the starter motor is not working properly, most likely. A fix entails the dismantling of the starter motor assembly and the work of a knowledgeable person to rebuild it.
It's usually easier and cheaper to just get a rebuilt starter.
The problem was not your starter! Sick of hearing that answer, but sadly I do not have the correct answer. My car was having the same issue, mainly on cold starts. I took the poor advice and replaced the stater and solenoid, that evening...Same problem! You will only need to replace your started if the real problem is not found, because it will grind off the teeth in the starter and may even destroy your flywheel! I am not a mechanic but after owning a 98 Dodge Intrepid I feel I know more than most! Again, do not replace the starter until you find the real problem or you will go thru starters like candy! BUT dont take to much time or you will be replacing the flywheel too!
If the starter spins but won't engage, then the Bendix is not engaging the flywheel. Remove the starter and test to see if the Bendix thrusts out, and check to see that the flywheel does not have chipped teeth.
The part of the starter called the starter drive is shot and hopefully the flywheel ring gear is not damaged also. I would recomend removing the starter and inspecting the flywheel ring gear and if it looks okay replace the starter with a rebuilt or new one.
yes. a starter made for the 168 tooth flywheel would not engage a 153 tooth flywheel.
tried to remove starter but shaft and gear seem to be stuck in primary case ..... do I need to open up the primary side to remove, starter just spins but does not engage flywheel.
Could be the starter drive is not engaging or perhaps you're using the wrong holes for your flywheel. If you have a 153 tooth ring and have the starter in the 168 tooth position, the gears would not mesh. Did it ever start? if it did ,most likely the starter drive is broken, or the pinion ,or flywheel are stripped of their teeth. Bendix is broken, Starter too far from ring gear, broken bendix throwout fork.
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 the starter is spinning but not engaging then the bendix (starter teeth) is not moving out to grab the flywheel teeth or the flywheel has some broken teeth. The starter needs to be removed to see what the issue is.
Electric current from the battery goes to solenoid, it clicks in and connects the full power of battery to starter main terminal, this spins the starter motor over, the starter Bendix gear on the end of the motor shaft spins around and forward about an inch to engage the gearing on the rim of the flywheel. This turns and when speed is up it throws the starter gear back to it's rest position.
The starter drive has broken, replace starter.
This can be caused by a worn flywheel, or a bad starter drive. You'll need to remove the starter and look at the flywheel to see which is bad.
Usually, the engine flywheel. A solenoid in the starter moves the starter pinion shaft forward (or backward depending on how it is mounted to the engine) to engage the outside edge of the flywheel (which has teeth to match the pinion gear).
the starter bendix is bad or the flywheel it self has some teeth missing The Starter Bendix drive is not close enough to the flywheel. Reinstall the starter and check to see if there are shims that can be removed to place it closer.