How to test a F53 chassis heater blower?
To test the relay check for continuity between post 30 and 87. It should show no continuity or OL on the meter. thats your switched contacts. Then check between 85 and 86. This is the coil side that energizes to move the contacts. It should be around 50-100 ohms if my memory serves me correctly, its been a while since electrical class.
Why is my heater not working on my F53?
OH MY GOD, it is the blower motor messed up, cause its getting 12V but not working. Was able to pull one of the vents out on the front of the dash & kinda got some access to the blower motor wires, ol test light lit right up when the switch was turned on.
Where is the blower motor relay on a F53?
Posted By: C-Leigh Racing on 03/31/10 08:30pm I’ve found the blower motor relay, its in another fuse box outside under the hood. If I understand a relay, it is for operating the high speed side of the fan.
What to do if your Ford truck heater is not working?
For what its worth – you might consider bringing in your rig to a ford truck dealer – a non functioning blower is a pretty common problem and diagnosing/fixing is usually no big deal. The hard part is knowing where/how to get access to the test the parts.
To test the relay check for continuity between post 30 and 87. It should show no continuity or OL on the meter. thats your switched contacts. Then check between 85 and 86. This is the coil side that energizes to move the contacts. It should be around 50-100 ohms if my memory serves me correctly, its been a while since electrical class.
What are the knobs on a 99 chassis?
This is a 99 chassis & the heat & air control has three round knobs. One for the fan speed, one for the temp & one for a/c or heat & which vent you want to air to blow out of. Posted By: suppok on 03/29/10 10:26pm
OH MY GOD, it is the blower motor messed up, cause its getting 12V but not working. Was able to pull one of the vents out on the front of the dash & kinda got some access to the blower motor wires, ol test light lit right up when the switch was turned on.
What should the OL be on a F53 heater?
It should show no continuity or OL on the meter. thats your switched contacts. Then check between 85 and 86. This is the coil side that energizes to move the contacts. It should be around 50-100 ohms if my memory serves me correctly, its been a while since electrical class.
