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The blower motor comes on when it wants to, somtimes not at all and somtimes works perfect, it has the digital selector, could the digital selector be bad? and also its in c and not f, anyway to change that?

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I would think the problem lies with the blower motor, as the motor carbon brushes wear down the operation can become erratic. Next time it won't run hit the blower motor with a hammer handle or something like that and see if it starts up, if it does replace the blower motor.

Posted on Oct 31, 2012

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Posted on Jan 02, 2017

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SOURCE: air conditioning on a 2000 chevy impala

If it will not switch to any different positions,and you did not have this problem prior to repair.Check for a leaking vacuum line to the control unit.The line should run through the firewall to the control unit.Good Luck!!!

Posted on Aug 04, 2008

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SOURCE: Heater/AC fan only works on High

Bencar1 is right. The problem is probably the resistor. But it also could be a burned terminal in the 4 prong plug that attaches to the resistor. There will be burn marks on one of the prongs of the resistor if this is it. Look for the obvious. Good luck.

Posted on Nov 11, 2008

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SOURCE: 1999 Chevrolet Suburban ac selector door motor.

it should be under dash next to gas peddle on left end of heater box not that hard 2 screws and a plug. its called heater blend door actuator.

Posted on Jan 28, 2009

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SOURCE: my 1998 astro van blower motor only works on high speed.

No the motor is not bad or going bad, the heater blower motor resister is bad, thats regulates the blower speeds, its located under dash by heater motor 2 screws hold in heater box with a electrical plug to it.

Posted on Feb 17, 2009

  • 115 Answers

SOURCE: 1995 Chevy Pickup- Blower works on high only

the resister is usually located in the air box above the passengers feet ,high indicates the resistor needs to be replaced

Posted on Sep 04, 2009

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Why doesn't blower work?


The motor or the speed selector could be defective.

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On my wifes 2004 yukon, the engine warms up and the blower works fine, but it takes forever for the air to finally blow warmly. when it finally does, if we switch it to another location (floor or defrost),...


iwould check the selector motor,and also replace the thermostant,start with the stant first,the selector motor is what runs the door for hot or cold the motor is a common problem,if the temp gauge is showing a quick warm up temp then its the selector motor, if it takes a while to reach operating temp then replace the t-stant,also make sure the coolant is full in radiator,check when cold or warm,dont open when hot, hope this is helpful.

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Blower fan is not working


Check your fuses
If they are all ok.
You may have to remove the right side, under dash, hush cover. (7mm or 9/32 socket to remove bolts) to gain accsess to the bottom of the blower motor
look up under the right side of the dash, with the fan switch on, bang on the blower motor with a screwdriver handle.
There is a good chance that it will come on.
The brushes get worn down and start sticking. they are designed to stay tight as they wear, but somtimes stick.
I found this to be the case in more than 50% of the blower motors inop.
If that doesnt work then test for power at the blower motor plug.
Hope this helps
If it does, leave some feedback.
(:DK

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SOMTIMES WORK SOMTIMES NOT , MY HEAT BLOWER.


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1997 honda passport heater fan motor doesn't work


check the fuses than check for power and ground at the blower motor plug with the engine running and the switch on high. if you have power and ground replace the blower motor. somtimes the blower motor resistor fails too but than the blower usually only works on high. I replaced 1 of each this week.

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either blower motor resistor or blower selector switch.could be selector switch because if resistor was gone you should still have either hi or low fan speeds.

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