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Bad main relay

Answereither a bad main relay or the starter... I had the same problem (it was random times but happened more often during extremely hot days) ended up being the starter... I'd let it sit for about 10 minutes and try again then it would work... dunno if that works for you or not.

The main relay happened to be the problem on my 1990 Honda civic. Resoldering all of the the connections on the circuit board attached to the main relay, found below the change tray to the left of the steering wheel, fixed the problem with starting in hot weather. I also found that cooling down the car by opening all the windows and doors seemed to help sometimes during hot weather, but it was somewhat inconsistant.

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Q: Why does a car start in morning but not in HOT afternoon?
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Why would a car start in the afternoon but not in the morning?

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