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Replaced blower motor but air is still not blowing through air vents
1990 BMW 735i

Replaced blower motor but air is still not blowing through air vents

(1990 BMW 735i)
The air isn't flowing throught the air conditioning vents is there something we can try other than replacing the blower motor?
in Fresno, CA on August 04, 2011
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Popular Answer
Have you checked fuse #19 (30 Amp)see that you have power at the green/black wire at the motor with the key on, the second wire gets grounded to operate the blower motor but you need a wiring diagram to trace the controls circuit.
Autozone have some popular workshop manuals for free on line once you register (for free) on their website http://bit.ly/autozone_repair_info. There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online
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General Diagnosis
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Have you checked fuse #19 (30 Amp)see that you have power at the green/black wire at the motor with the key on, the second wire gets grounded to operate the blower motor but you need a wiring diagram to trace the controls circuit.
Autozone have some popular workshop manuals for free on line once you register (for free) on their website http://bit.ly/autozone_repair_info. There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online
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on March 08, 2013
check the switch inside and make sure you are getting current to the blower
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