I am trying to diagnose my starter on my 96 s10 2.2. The shop manual says its a SD210. Seems to be 94-96 only. It motor always spins when the key is turned but it does not want to engage into the flywheel and turn over the engine. Its worse after the truck is hot. Does this sound like a starter drive problem or a solenoid problem? Since its spinning fine and when it catches and it turns the motor over well i think the basic motor section is ok. The drive section, solenoid and some solenoid parts are available.
Bob