on the heater power control knob in my 02 desire on level 1 nothing at all seems to happen on level 2 it seems to just allow air to flow through depending on speed of the car like doing 30 ish u cant feel anything then wack it on the lvl 3 option it will littrally bloe your eyelids inside out , but i want to know why the first two options do sweet fk all ?
heater controls
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#1
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#2Mine went funny, i just put some resistor inbetween my switch and motor canceling out the ones in the car,which i think are hard to get at in the motor,mine now are bolted to the inner wing .works great.
you only need two. -
#3It could be your heater motor resistor,which can be expensive to replace.A lot of people just replace the complete motor.