If you reach for the A/C in your Toyota Tercel in the middle of summer and all you receive is a blast of hot air, your A/C system may be experiencing a number of issues. However, you can diagnose many problems on your own, such as insufficient pressure in the A/C system or a refrigerant leak. Before taking your Toyota Tercel to the shop for what could be an expensive visit, you can run through a few troubleshooting steps.
Tools Used: Tools, Air conditioner pressure gauge
Troubleshoot Air Conditioning
Start the vehicle and turn the A/C control up to the coldest setting. Open the hood and place your hand above the hoses near the firewall. Both of the hoses should be warm to the touch but one should be noticeably cooler.