Question about 2004 Dodge Ram 1500

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How can i tell if my blower is bad or the fan switch

I feel heat coming only when I drive

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Start with the fuses first,replace if bad,should be at least a 20 amp fuse(or circuit breaker)then look at the blower under the dash and check /inspect it.most blowers have a hot wire and a ground wire connected to them look at both check for power either with a light or a meter to read battery voltage and check the ground for good connection..if in doubt pull the blower out and test separately with a battery charger..theres also a coil type speed control (resistor wire) thats usually mounted in the system that can burn out..see if it is ok also..it controls the speed of the blower motor..then concentrate on the switch..these dont normally burn out unless the motor jams up by debris getting into the ducts by way of the defroster vents..good luck..

Posted on Jan 17, 2013

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Tap on blower while switch is on. sometimes blower will start working. thus possible bad blower..

Posted on Jan 17, 2013

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Posted on Jan 02, 2017

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SOURCE: heater blower switch broken

mine was doing the same, then just quit all together. I went and got a resistor and everything is working again. Pretty easy to replace as well.

Posted on Feb 08, 2009

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