Is it running hot or is it actually overheating??? Your engine will run hotter & use more fuel when running the A/C due to the added load on the engine..
If your engine overheat is primarily at idle or slow speeds, you might wish to check the fan clutch. Another symptom of a worn or slipping fan clutch will be poor A/C performance. If it found that the fan clutch needs to be replaced, special tools might be required.
A forum community dedicated to Ford owners and enthusiasts. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more!