Radiator Fan Problems: Overheating at Idle, A/C Clues, and Electrical Tests
A radiator fan not working can cause overheating at idle and weak A/C performance. Learn how techs test relays, fuses, wiring, sensors, and fan motors.
23 September 2026
Omid Fard Automotive Service Technician
My name is Omid Fard, I’m an international student at ATC as an automotive technician student. I will be graduating in September. My instructor – Dave is the best instructor in the mechanics field. I spent a lot of time in the shop learning and got a lot of experience during the course. I recommend anyone interested in cars to come to ATC.
Thank-you ATC!
