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Blower cuts out under acceleration.

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Old Nov 27, 2010 | 01:26 PM
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Blower cuts out under acceleration.

93 E150, 4.9 six, c6, factory air.

Help! Why does my fan shut off under 1/4 throttle?
It just started this yesterday.

Any help would be appreciated, Thanks
 
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Old Nov 27, 2010 | 07:53 PM
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Your title says "blower cuts out under acceleration". If this is true, are you sure the blower is cutting off, or is it just being re-directed to the defrost vents? Check this out, because if it is being directed to the defrost vents under hard acceleration, there is a solution to that problem.
 
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Old Nov 28, 2010 | 08:31 AM
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Well, there's a solution either way.

If the motor itself cuts out, the brushes are usually worn out and it's time for a new blower motor.

If the airflow is diverted to the defroster vents, see the FAQs in the HVAC section for the diagnosis.
 
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