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A/C - Heater blower motor ! What make , model and year vehicle ? Manual or automatic climate control ? Could be a bad blower motor control module , a high blow relay contacts stuck closed .
I just fix my 2010 Altima
The ac compressor did not engage
the fans were both running all time when ac on
The problem was the high pressure valve located on the driver's side on the condenser
This valve controls both fans and compressor clutch
Hi Danny,your blower motor resister may be bad,controls the fan speed.Here's a link to where it's at,easy to remove,here's the part,if it doesn't solve,return for refund.
Check the direct connection to the blower motor. Check the fuse. Sometimes you can try to put it on high and try hitting the blower motor to see if turns on. It may also be the blower switch or the blower itself.
there is a mosfet power transistor that drives the fan.it is probably shorted,applying full power to the fan at all times,even if the climate control is off
I am guessing it has eatc. The blower speed controller is shorted causing the blower to stay on all the time. Replace the controller and you should be good to go. It is located under the hood on the evaperator case. Good luck.
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