rear blower motor on 64 coupe
can you supply an outside power source to a rear blower motor to see if it runs while still in the car? If so what do you use and how do you hook it up? Thanks Ron
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Re: rear blower motor on 64 coupe
Blower in back is same as 65. The AIM has a wiring diagram in section 12. The switch on dash left side controls rear blower too. Follow the diagram to jumper in power to rear harness. You can unplug harness that goes to rear of car or climb back there and connect to motor directly. -
Re: rear blower motor on 64 coupe
The switch below the dash is not a switch but a cable that when pulled activates the 2 speed switch on the blower motor on the rear drivers side of the car.
Remove the carpeted panel for easy access to the motor.Comment
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Re: rear blower motor on 64 coupe
Thanks Gene for the reply. How do you connect to the motor directly and what power source do you use? The cable that controls the blower is frozen so I disconnected it at the motor and manually moved the switch but nothing moved. Thought I would start with the motor first . Not very good with electric troubleshooting. Hate to disturb anything behind the dash.Comment
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Re: rear blower motor on 64 coupe
Ron,
If the cable is frozen up you will need to crawl back there and do a power feed direct to the motor leads. The switch may be an issue too. But you were asking about the motor operation. If you jumper power to the motor you will only see only high speed if it is working. Try operation of switch manually with the inoperable cable disconnected. If just the cable is the issue I have no experience with the internal connection at the switch. So there you will need to seek other help.
A small 12 volt battery (lawn tractor, trailer, or motor cycle) is all you will need to check. But be sure to disconnect connector first so you don't back feed the car.Comment
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Re: rear blower motor on 64 coupe
Ron,
Did you check to see if you had power at the wire? A cheap tester will tell the story. If you have power then leave the harness plugged in and move the switch manually. If the motor still doesn't turn then I would assume the motor is bad. At this point, you are better off removing the blower assembly from the car. I think there are just 3 bolts holding it in. Its just too hard to work curled up in the back of the car.
For further testing, you need a 12 volt power source. The most common source is the car battery. I just use jumper cables to test items like starters. However, starter cables may be too big and bulky to test the blower motor. When I was restoring my 64, I purchased a converter that let me convert 120vac to 12vdc. I think I got it at Radio Shack. You just plug it into a wall outlet and now you can work on and test your electrical items at your work bench.
If you discover that your motor is bad, don't fret. The motor is the same as your heater blower motor and is readily available and inexpensive. The cable will take a little more work. You will have to remove it from the car. It will require some disassembly of your interior. Nothing major but still a little inconvenient. Once its removed, spray the entire length, liberally, with WD40. The cable is about 6' long. I would avoid soaking it in lubricant. It will drip forever. Slowly work it back and forth until its loose. It may take a couple days for the lubricant to soak in. Once you get it loose then let it sit for a few days before you reinstall it. Otherwise, it will continue to drip on your carpet. If you don't want to deal with the old cable then reproductions are available. They are not 100% correct in appearance and they are expensive. I just used my old one once I got it freed up. Good luck.Comment
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Re: rear blower motor on 64 coupe
Jim, I have a cheap meter but not sure what you touch each probe to. I also have a converter that i used to hook up to my cb radio when I took it out of my car. Is that what you mentioned in your reply. If so how do I connect to the motor while in the car. I took the cable off and worked the switch manually but the motor didn,t run. THanks RonComment
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Re: rear blower motor on 64 coupe
I'm talking about a simple 12v circuit tester. Ground one end and touch the other to the power side of the harness. The converter can be bought at radio shack for about $35. It converts 110vac to 12vdc. Its not the same as this device in your cb radio. According to Wayne there is a difference in the motors so I'll withdrawal my "readily available and inexpensive" statement. I know the housings are different but I was under the impression that the motors were the same. Sorry for the bad info. You can purchase a circuit tester just about anywhere for $5. If you're going to chase wiring problems you really need this. Can you spin the cage with you fingers? Or is the housing blocking your access to the cage?Comment
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Re: rear blower motor on 64 coupe
Sorry if this has already been discussed and I missed it. The power for the rear vent come through the heater fan control. This is so if you turn on the heater, defroster, or AC fan, it turns off the rear blower. Don H.Comment
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Re: rear blower motor on 64 coupe
A 12V battery charger can be used as a temporary 12v power source in lieu of a 12V battery. Set the charger rate at approximately what the device draws. Typical charger rates are 2, 6, 10, and 20 amp. For a blower motor I would suggest the 6 or 10 amp rate.
DukeComment
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Re: rear blower motor on 64 coupe
Jim, I can spin the cage with my fingers. Does the engine have to be running for it to work? RonComment
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Re: rear blower motor on 64 coupe
No. It should work in the accessory position. See post #10 above.Comment
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