I have an 84-300d that has 255K and the car only starts when I bang on the starter with a bar. Is it the starter or the connections? Can I get to the wiring from below (to clean them), if the car is on stands? Or, could it be something else? I have cleaned the posts and the main ground. I get NO sound from the starter or solenoid until it engages and then it starts right up. The starter was replaced by the previous owner about 3 years ago.

Any help is always appreciated,

Don