Inside the Heater Blower
#1
Inside the Heater Blower
My son and I took apart a non-working heater blower motor to see about repairing it. If you have never opened one up, you may find this to be interesting.
1990 Jaguar Sovereign : Disassemble the Heater Blower | AndyRupert.com
1990 Jaguar Sovereign : Disassemble the Heater Blower | AndyRupert.com
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MidwestJag (11-09-2013)
#2
If you're going to completely rebuild the blower you should also take a look at the speed control transistor circuitry, it's accessible by drilling out the three pop-rivets. If a fan only blows on high it's usually because the speed control circuit has a problem. One of the relays is used for high speed fan and by-passes the speed controller.
I replaced the darlington transistor and all the other components on the speed control circuit board when I replaced the relays.
Check out the threads on the blower repairs, there are quite a few detailed postings.
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