Friday, December 30, 2011

Blower motor Resistor shorting problem?

Dodge Dakota:

Many car users notice this problem.
There are actually for speeds for blower motor.
The blower motor works on all speeds,but not work on High speed.
It only works on first three speeds but not on fourth.
In this case most probably,the problem is faulty blower motor resistor.

Although the resistor could be the problem,. There is always power going to blower. The switch and resistor only make the grounds to run blower. Now.. on hi mode, the link from switch to blower goes through the resistor but direct shot to the blower.I hope this makes sense. You could either have bad resistor again, OR a bad blower switch at control panel. I am thinking the reaosn for the 2 failures may? be a blower motor that has high resistence on high setting which could be damaging the resistor block. It cant be the blower per say that is preventing high but could? be blower motor affecting the resistor. Going that you did resistor one time before, I lean to high draw on blower motor causing the resistor to go bad. See below  the diagram. Notice on the high setting, the cirucit runs directly through the resistor to blower making the ground. I would try resitor agian. If the resistor again blows after few days? then consider doing blower motor at some point soon to prevent this from happening.

graphic

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This details will help you.
Thanks.

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See below list of blower motor related solved problems

Blower only blows warm air ?

http://schematicsdiagram.blogspot.com/2011/11/blower-only-blows-warm-air.html

AC cool air enters only the passenger compartment even with the heat control turn all the way?

http://howtobyme.blogspot.com/2011/11/ac-cool-air-enters-only-passenger.html

Saturn Car Blower motor Only works on High?

http://howtobyme.blogspot.com/2011/11/saturn-car-blower-motor-only-works-on.html

No hot air from defrost vents?

http://howtobyme.blogspot.com/2011/12/no-hot-air-from-defrost-vents.html

Radiator replaced but still Car is over heating?

http://howtobyme.blogspot.com/2011/12/radiator-replaced-but-still-car-is-over.html

Ford ranger heater blows cold air?

http://schematicsdiagram.blogspot.com/2011/12/ford-ranger-heater-blows-cold-air.html

Audi A4 blower motor blows Warm Air?

http://howtobyme.blogspot.com/2011/12/audi-a4-blower-motor-blows-warm-air.html

Heater stuck on defrost?

http://howtobyme.blogspot.com/2011/12/heater-stuck-on-defrost.html

Where is Blower motor resistor located on 2006 Ford F 250?

http://schematicsdiagram.blogspot.com/2011/12/where-is-blower-motor-resistor-located.html

Dodge Caravan AC Heater Control only works on high mode?

http://schematicsdiagram.blogspot.com/2011/12/dodge-caravan-ac-heater-control-only.html

Honda Civic Blower Motor Only works on high mode?

http://schematicsdiagram.blogspot.com/2011/12/honda-civic-blower-motor-only-works-on.html

How to Test and Replace Blower motor on car?

http://repairhelpcenter.blogspot.com/2011/12/how-to-test-and-replace-blower-motor-on.html

How to Replace Blower Motor Wheel?

http://repairhelpcenter.blogspot.com/2011/12/how-to-replace-blower-motor-wheel.html

How to Replace Blower Motor on 2008 Honda Odyssey?

http://howtobyme.blogspot.com/2011/12/how-to-replace-blower-motor-on-2008.html

How to Remove Blend Door Actuator on 2008 Honda Odyssey?

http://howtobyme.blogspot.com/2011/12/how-to-remove-blend-door-actuator-on.html

How to Remove Passenger Side Blend Door Actuator on 2008 Honda Odyssey?

http://howtobyme.blogspot.com/2011/12/how-to-remove-passenger-side-blend-door.html

How to Remove Driver side Blend Door Actuator on 2008 Honda Odyssey?




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