Hi i have an issue with my 2000 civic dx sedan, when it starts to warm up the engine cuts off and wont come back on till the entire system is cooled down. When this happens i’ve came to realize it loses spark completely, and when checking the power wire to the distributer i’ve noticed that once the issue starts occurring the wire loses ground. Ive already replaced my ignition coil ,main relay, all spark plugs crank shaft position sensor and my fuel pump is in great shape, I've also only gotten a code for an o2 sensor if anyone has any clue what it could be id be very grateful for the help

 

likely the coolant temp sensor is toast
(the one that's connected to the ecu not the temp gauge).
replace it's cheap.

 

I already changed the coolant temp sensor that goes to the ecu very recently, within about a month. Also update i just changed the ecu to one out of another civic same parts number and still hasnt fixed the issue

 

Today when i was working on it i noticed the coolant temp sensor had oil all inside of it(likely from when i removed the distributor for the head gasket replacement) so im gonna replace it