Car is 1983 240 with 4 speed manual.

Notices this morning that the crank was a little weak when I went to start the car. No big deal, figured it was just cold. So I went to the grocery store on the way to work and came back out to the dreadful sound of the starter click and no crank.

I pop the hood and connect my jump pack worth of 14v to see if I have a battery problem. Nothing changes. Just more starter click. Next I grab the tire iron and beat on the starter. Nothing changes. Finally I had to go because I was going to be late for work so I did the bobsled start. Ran beside the car with the door open in parking lot isle then jumped in it to bump start it in 1st gear then took off. Went back home to swap out the cars and the car would start with the key, but it sounded a little week.

Battery is new, the starter solenoid is new as well. Wiring is all cleaned up and I don't think I have a ground issue. Is it just a simple starter swap? I'd hate to spend the $200 on a starter for it to be something else. I love this 240D but can't chance driving it somewhere where I can't get a running start to bump start it.

__________________
'80 300SD - '83 240D - '00 E55 AMG - '02 G500