If the heater in your 1992 Ford Telstar isn't working despite checking all the fuses, the issue may lie with the heater core, blower motor, or the climate control system itself. Inspect the blower motor for proper operation; it may need to be replaced if it's not functioning. Additionally, check for any clogs in the heater core or issues with the thermostat. If these components are in good condition, consider having the climate control system evaluated for electrical or mechanical faults.
Check your fuses!
Check your fuses.
check the relays.If it doesnt blow air at all then check the blower relay or fuse
Try checking the fuses.
check fuses
check fuses and and all switches one may be bad.also check bulbs behind dash they may be blowed.
check fuses
Check the fuses.
You could check the hoses connected to the heater are still in good shape. You can also check the fuses associated with the heater (ie: blower motor) to make sure thay aren't blown. There's the possiblity that the heater element may have broken down, which can happen given the age of the car.
I just assume you haven't checked the fuses yet. I had that problem and had to replace an expensive $60 fuse. That may have included labor. Check the fuses and see if you can buy one at your local auto parts store.
check your bulbs and fuses check your bulbs and fuses
check the fuses for the head lights check the fuses for the head lights