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Heater/AC Blower Speed Issue

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Old Apr 22, 2007 | 11:13 PM
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Default Heater/AC Blower Speed Issue
Noticed that my Blower no longer adjusts speed with the change of the fan speed control. The blower, HVAC control, resistor and relay (top of firewall near blower) are all new. I changed out the relay thinking this was it...no luck.

Any ideas?
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Old Apr 22, 2007 | 11:27 PM
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Originally Posted by 80TexasC3
Noticed that my Blower no longer adjusts speed with the change of the fan speed control. The blower, HVAC control, resistor and relay (top of firewall near blower) are all new. I changed out the relay thinking this was it...no luck.

Any ideas?
Wow. Messed with the starter lately? Leave the ground wire off?
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Old Apr 22, 2007 | 11:48 PM
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Originally Posted by Big2Bird
Wow. Messed with the starter lately? Leave the ground wire off?

Ouch... that was good... No...no ground wires missing from the starter project.... but an interesting thought.
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Old Apr 22, 2007 | 11:59 PM
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Then I would unplug the blower motor and check for voltage there. I did see one melt once. Work back from there. Check the fuse and fusable link of course first.
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Old Apr 23, 2007 | 12:27 AM
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Also make sure you got the relay wired up correctly.
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Old Apr 23, 2007 | 10:49 PM
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Thanks Guys... am out of town until Wednesday night... will check then. Really appreciate the insight and drawing.

Ed
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