my 98 Civic runs great but recently it's had an issue where if I turn the motor off for a short break like at a gas station or running into the store, when I try to start it again it turns over but won't start. So far every time this has happened (4 or 5 times in the last couple of weeks) if I sit for a few minutes and try it again it will eventully start right away.

The only time this has happened when the car had been sitting overnight, as opposed to having been running, stopped, then tried to start again, was a very vet day with really high humidity in the air. That was actually the first time this happened. But since then it's been on clear dry days.

Any insight? Thanks.

 

check main relay

 

ok, thanks. Is that relay in the box under the hood or under the dash?