Question about 1999 Chevrolet S-10 Pickup

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Blower Motor wiring

Replaced my Blower Motor with a Siemans PM 137X. Both wires coming from Blower Motor were white. So, I wasn't really sure if I wired it correctly. It works, but it just doesn't sound like the old blower motor before it broke. It's blowing air out, however, it doesn't feel as forceful on all settings as it use to. My question is, is it possible that the blower is rotating in the wrong direction? Would reversing the wiring solve this?

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Yes it is possible and switching wires would resolve

Posted on Sep 22, 2008

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1993 Ford Escort Blower Motor & AC Switch


I'm going to start from the beginning.
The blower motor gets power from the high blower relay and it is grounded thru the fan switch and the resistor. So you should have power on the pink white blower wire coming from the high relay to the blower motor. The orange black wire from the motor is ground going to the resistor and fan switch. The blue wires on the control panel are for the ac compressor.
The high blower relay gets power from fuse number 5 in the box. The blower motor is grounded thru the resistor and then thru the fan switch.
Photo courtesy of AutoZone.com
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Jun 10, 2013 | 1993 Ford Explorer Limited

1 Answer

Blower motor resistor


The blower motor is located under the passenger side of the dash. there should be power on the dark green wire at the blower motor. If there is no power check the 40 amp blower fuse and the blower relay. If there is power than ground the light green with white wire with the blower motor plugged in. If the blower does not come on than the blower is bad. If the blower comes on than you have a ground issue. The system is ground side controlled which means the switch provides ground. If the blower does not work on high I would suspect the ground wire is burnt on the backside of the switch since high speed bypasses the resistor.

Apr 30, 2013 | 2000 Dodge Durango

1 Answer

Air and heat blower will not come on. 1998 sonoma 2.2l


start by checking fuse. if fuse is good, aquire a test light, check the test light on the battery to make sure the test light works. Power to ground = light. access blower motor under pass-side dash panel.(probablly have to remove underdash cover, secured with pop-in style fasteners.) locate blower motor. 2 wires w/connector Purple-power, black-ground. check for power at purple w/test light on known good ground, with ign on, and blower switch on high. if it has power, hook clip of test light to a power source, ( + on battery w a jumper wire) and probe black wire, with test light. if no light, jumper that wire to a good ground. if it lights, you have a bad b-motor. if no light on power side of blower motor, and fuse is good, check power to swith. blower circuit may have 2 fuses. 1 for high and a 2nd for the lower speeds. if switch has power to it, and power is transfered to another wire when switched, suspect the blower motor resistor. James White, White Automotive, Hopkins Mo. ASE tech, 17 yrs exp.

Feb 06, 2013 | 1998 GMC Sonoma

1 Answer

Blower motor not working on 97 chevrolet cavalier


Did you check the fuse for it. If its good, chase the wire back to make sure it didnt come loose

Jan 15, 2013 | 1997 Chevrolet Cavalier

1 Answer

My heater comes on sometimes and sometimes it won't????


ANY electrical circuit malfunction COULD be caused by a ground wire problem. However, the first thing I would check for on your vehicle would be a loose/burned connector at the blower motor. This is pretty common.

Nov 13, 2011 | 2004 Chevrolet TrailBlazer

2 Answers

My heat has stop blowing. replaced blower, and heater on off switch. what else could it be?


LX? DX? EX? Hatchback? sedan? wagon?coupe? engine size? did you check the fuse? Fuse #19, 30 amps in the auxilary fuse box (your owners manual may show the location ,it may be near the blower ?). The Blue/White wire at the heater blower motor should be HOT (12v) with key on. If you ground the Blue/Black wire the motor should run full speed.

Dec 17, 2010 | 1991 Honda Civic

4 Answers

1998 GMC Sierra. Blower motor works sometimes. No particular circumstances, just when it wants to. Checked all fuses, relays, even replaced the resistor, nothing. Followed the wire harness and found...


could it be the blower motor it self? sometimes they have a "bad spot" when it is not working, can you hit it and make it run? pretty common on these trucks. the switch is also common. they often melt at the connector on the back making a bad connection. i would double check the motor first.

Aug 18, 2010 | 1998 GMC Sierra

2 Answers

Is the blue and white or the blue and black the positive wire on the heater blower connection ona 2004 honda civic


The blue and white should be the power wire.It comes from the blower motor relay.The blue and black is for the blower high.Hope this helps.Good luck.

Jan 19, 2010 | Honda Civic Cars & Trucks

1 Answer

Heater fan only works on high


The blower resistor needs to be replaced. The blower motor resistor is located in the passenger foot well, it is mounted inside the heater case near the firewall and the blower motor. This is an extremely common problem with these vehicles, and the problem is in the wiring connector that goes to the resistor module. The blower motor draws current through the resistor pack at an excessive rate and causes the wiring terminals at the resistor pack to melt and loose connection. The most effective and permanent fix to this problem is to replace the connector end, the blower motor, AND the blower motor resistor. You can usually get away with just repairing the wiring at the resistor module, however it is extremely likely that the problem will repeat itself in the future. The connector ends are available at your local GM dealership, are relatively inexpensive, and they come in a package that contains the connector pigtail and heat-shrink **** connectors, however to maximize model coverage they manufacture the pigtail so that all of the wires are white. This means that your wire colors will not match up, and you will need to snip and crimp each wire separately as to avoid confusing their positions in the connector and accidentally wiring the resistor pack incorrectly. Inspect the resistor module for melted terminals as well, usually the module needs to be replaced because of melting damage. Should you choose NOT to replace the blower motor, the system will likely work in all speeds after repairing the connector, but you are taking your own risk towards the problem happening again. Good luck

Dec 10, 2009 | 2004 Chevrolet TrailBlazer

1 Answer

Heat levels..


need new technician.if the blower motor works even with only one speed than the blower motor works and did not need replacement.sounds like blower motor resistor or resistor wiring,when there is a problem with the resistor or wiring you will only have one speed,this way you atleast have heat.so if your tech replaced the blower motor when it worked and did not need replacement then it sounds like he is just throwing parts at it,you have to wonder if he really checked anything.have the resistor and wiring checked and if ok then check the heater control head and wiring.

Nov 06, 2008 | 2001 Ford Expedition

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