my coolant fan not coming on

Check fuses and relays? If they are all good then it could be a temp sensor switch or the fan has bad ground or fan motor is bad

I believe you that the fan(s) are not coming on. But if the car overheats at highway speeds, 50+ mph, the overheating problem is elsewhere. There is more than enough air-flow at ..say... 45 to 50 mph (probably even less) to cool the radiator and make the fans redundant or useless. Begin with checking the coolant level -- cold --- do not pop a hot cap. If it is good, next is thermostat to be checked. But if all this is moot and it does not overheat at speed, only at idle, then right back to Rob's answer

I have changed the thermostat my fans are not coming on I put the cooler in its leaving out my car is not running hot what's going on

My 300 Chrysler Hemi fan for ac want come on.

Electric fan not working

Don't know

On my 20006 Chrysler 5.7 need to know if both cooling fans should ran at the same time

no they can come on independently. You have a cooling fan and a auxiliary fan for the A/C, when you car reaches a certain temperature both fans can come on or if you have the A/C on