So, when it's hot it won't even turn over, right? However the starter makes a loud "click", right?
In my usually humble opinion, your battery has a marginal charge on it. Next time the problem comes up, do a jump start while the engine is still hot.
Also, pull the voltage regulator/brush holder off the alternator and check the brush length. If they are under 3mm, put in a new set. The unit is about $70 and the brushes by themselves are $4.00 but you have to remove the old ones and solder in the new ones.
This is the same problem I encountered on my 1988 244GL. New brush/regulator made a lot of defferences.
Good Luck,
Bob
:>)
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