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Honda doesn't start sometimes after being driven for a while...

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I have a 1990 Honda Accord. Sometimes after being driven a while, the car won't start after being turned off. When you try to crank it, it sounds like it's out of gas, no matter how much gas is in it. It always starts again after about 40 minutes of sitting. It always starts from cold.

 

Does anyone know what this is?

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This is caused by the infamous main relay which runs the fuel pump via the ignition switch. The solder connections get hot and become separated and reconnect (contracting as they cool) after current is shut off. Two options:

A: replace  (if ebay isn't your thing search "PGM-FI RELAY" ) or

B: remove and manually re-solder the four connections 

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