my 97 nissan altima's a/c controller/knob only works at full blast. how can I fix that myself?

Question

so when the dial is set at 1,2 or 3 it doesn't work at all, but when its set to 4 it works fine... blows nice and cold. can I replace the control unit or is this a problem deeper under the hood?

CLAYTON M · Accepted Answer

change the knob

? · Answer

Sounds like blower speed resistor bad, usually under dash on a/c heater box. Suggest Dealer for repair shouldn't be too expensive, that way you don't mess up something else under dash.

my 97 nissan altima's a/c controller/knob only works at full blast. how can I fix that myself?

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