200SXWHOOPEDYA

On my 9=5 200sx the air cond. and heat speed controler goes from 1 to 4 1 low to 4 high and only high works if i turn it on 1 the motor idle changes a bit like i turned it on but nothing happins air will only blow out if its on 4 any help plz?

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jer28

What I think you are trying to say is that your blower fan only works at certain speeds, right? If the blower operates at some but not all of the positions the problem is typically the blower motor resistor. I believe I paid 25 for the part at the dealer. It has 2 screw that secure it to the passenger side firewall. It will have a connector going into it with four wire iirc.

The engine rpm dropping will be because the car is in AC mode possibly.