My car overheats when sitting still

Good afternoon,

Do you have a volt meter or test light to do some testing on the wiring?

https://www.2carpros.com/articles/how-to-check-wiring


We will need to check for powers to the relays and the fan to see if you have a wiring issue.

Roy

There is power and ground on both sides.

Power and ground where? On both sides of what?

If you mean the relay, then you should have power to the fans.

Roy

Yes, the relay. The fans will work if I straight wire it. I have checked the relay and changed it. I have also checked the wires coming from the relay. I changed the temperature switch as well. The only thing I.can thing of is maybe the module.

Okay, what were the voltages to the relay? You need to do power tests here to determine the failure.

What color wires have power with the key on? We need to start somewhere and we start with voltage tests at the relay.

Roy