I had this problem last year and thought I had it solved. It's 99* out here and I drove to the store. When I came back out, the car wouldn't start.

Something about when it's hot out it doesn't like starting on it's own power. Today the battery read 12.7V, the engine coolant was right at 80 (both when I turned it off and tried to start it), and (of course) I was parked with my nose up hill.

Last year, I upgraded the alternator to a 115 amp and upgraded all the main power wires, and that didn't help. I tried a different battery with the same outcome. I do by the way have the right battery in there...I knew it would get asked. Thinking it was the starter I swapped it out, and didn't have any problems for the rest of the year. Any ideas on what is wrong? I don't want to go through another summer push starting my car. What an embarrassment.

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My Primary Driver - '85 300CD - 4-speed conversion, 2.47 rear, lowered, euro headlights, rebuilding (not restoring so much)

Wife's - '08 Saab Sportcombi Aero

Riding a '03 Yamaha Warrior