Engine overheating when the A/C is on?

When you turn the A/C on can you hear the radiator cooling fan come on? If not, this is your problem which is common. Also, I would check for an obstruction in the front of the condenser/radiator like a plastic bag or mud/dirt that has caked up. Use a garden hose to blast the dirt from the cooling fins, here is a guide that will help:

https://www.2carpros.com/articles/engine-overheating-or-running-hot

If the fan is not coming on check the Rad fusible link 30 amp and the SENSR fuse under the hood, if there are okay start the engine and turn the A/C on to check for power at the fan motor, if there is power the fan motor is probably bad and needs replacement. here is how to check it and how to change the fan motor out in the images below.

This generic guide will help walk you through the steps:

https://www.2carpros.com/articles/replace-electric-fan-motor

Also, here are the cooling fan wiring diagrams so you can see how the system works.

Check out the images (below). Please let us know what happens.