Heater Fan, Never cleaned out since 1969! |
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Heater Fan, Never cleaned out since 1969! |
914sgofast2 |
Jun 23 2022, 06:33 PM
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#1
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Senior Member Group: Members Posts: 623 Joined: 10-May 13 From: El Dorado Hills, CA Member No.: 15,855 Region Association: None |
As one of the "while I'm in here, might as well do this too" type of jobs to be done when I was replacing the gas tank, I removed my heater fan box to investigate why the heater/defroster fan never worked since we bought this car in 2016. It's a model year 1970 that was built in December 1969 according to the door jamb sticker.
The heater fan box was completely filled up with leaves and debris. These early cars did not have a screen used under the air intake louvers. The fan motor couldn't turn at all with all the leaves, twigs, and dirt built up in the heater plenum and vent outlets. No wonder the motor had burned out. Here is a photo for your viewing enjoyment showing what I discovered upon separating the fan from the heater box housing: |
vitamin914 |
Jun 26 2022, 09:09 AM
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#2
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Member Group: Members Posts: 202 Joined: 8-September 21 From: Toronto Canada Member No.: 25,893 Region Association: Canada |
Pulling out the gas tank is not a simple procedure for inspection. Anyone know from what model year onward screens were put on to prevent this?
... These early cars did not have a screen used under the air intake louvers. The fan motor couldn't turn at all with all the leaves, twigs, and dirt built up in the heater plenum and vent outlets. No wonder the motor had burned out. Here is a photo for your viewing enjoyment showing what I discovered upon separating the fan from the heater box housing: |
914sgofast2 |
Jun 26 2022, 02:31 PM
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#3
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Senior Member Group: Members Posts: 623 Joined: 10-May 13 From: El Dorado Hills, CA Member No.: 15,855 Region Association: None |
Pulling out the gas tank is not a simple procedure for inspection. Anyone know from what model year onward screens were put on to prevent this? ... These early cars did not have a screen used under the air intake louvers. The fan motor couldn't turn at all with all the leaves, twigs, and dirt built up in the heater plenum and vent outlets. No wonder the motor had burned out. Here is a photo for your viewing enjoyment showing what I discovered upon separating the fan from the heater box housing: I had to pull out the gas tank to replace it with a new tank. Taking out the heater fan box was just one of those "while I am in here" ideas. Glad I took the heater fan box out and discovered all the leaves and debris inside the fan housing. It certainly explains why the fan never worked. The fan would not even turn. It also explains the melted/shorted out wires in the heater fan harness. |
rgalla9146 |
Jun 26 2022, 03:25 PM
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#4
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Advanced Member Group: Members Posts: 4,569 Joined: 23-November 05 From: Paramus NJ Member No.: 5,176 Region Association: None |
Pulling out the gas tank is not a simple procedure for inspection. Anyone know from what model year onward screens were put on to prevent this? ... These early cars did not have a screen used under the air intake louvers. The fan motor couldn't turn at all with all the leaves, twigs, and dirt built up in the heater plenum and vent outlets. No wonder the motor had burned out. Here is a photo for your viewing enjoyment showing what I discovered upon separating the fan from the heater box housing: I had to pull out the gas tank to replace it with a new tank. Taking out the heater fan box was just one of those "while I am in here" ideas. Glad I took the heater fan box out and discovered all the leaves and debris inside the fan housing. It certainly explains why the fan never worked. The fan would not even turn. It also explains the melted/shorted out wires in the heater fan harness. One more 'while you're in there' awaits. Check the sliding contacts on your dashboard heat/defrost controls. Another sight to behold most likely. |
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