Auto a/c problem. Question.

Discussion in 'The Okie Corral' started by JASV.17, Apr 6, 2010.

  1. JASV.17

    JASV.17 Prime Example

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    2004 Nissan Xterra.

    Four settings, 0-4. 0,1,3 and 4 work fine. When switched to speed 2, nothing? Any ideas what could be wrong and how to remedy?

    Thanks.
     
  2. n2extrm

    n2extrm

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    Sounds like the blower resistor or switch are bad. Usualy it is the resistor. Check for a good signal out of the switch to the resistor. Then see if you have the signal out of the resistor at the blower. A volt meter is best for this but a test light will do. Test lights can lead you down a wrong path because they just tell you something is there, not the quality, and if you loose a ground it can confuse you by making you think everything has power. The resistor is generaly under the dash(some makes under the hood) and in the heater a/c box close to the fan. They use the air flow of the fan to keep it cooler. It gets hot so don't burn your self!
     

  3. tantrix

    tantrix J'aimeLouisiane

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    Yep...resistor issues.
     
    Last edited: Apr 6, 2010
  4. Viper16

    Viper16

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    could this be a dirty contact as well? on the knob?

    I am no auto mechanic...
     
  5. inthefrey

    inthefrey Moved on...

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    resistor....

    Usually mounted in the air duct next to the blower motor.
     
  6. tantrix

    tantrix J'aimeLouisiane

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    Not likely. The resistor lowers the voltage to the blower motor when you have the fan speed lower than the max. Think of it like a dimmer switch on your living room lights.
     
    Last edited: Apr 6, 2010
  7. n2extrm

    n2extrm

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    VERY VERY rare the switch is an issue.
     
  8. JASV.17

    JASV.17 Prime Example

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    Awesome, thanks. As a mechanical idiot, I had no idea what you were talking about. Quick google, and I'm good to go. Looks like about a $20 and 5 minute investment (found out it's behind the glovebox).
     
  9. JASV.17

    JASV.17 Prime Example

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    Last quick question (hopefully).

    I don't need to get taken at the Nissan dealership, I can get this at Pep Boys etc., parts is parts, right?
     
  10. tantrix

    tantrix J'aimeLouisiane

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    Here's your part numbers and prices at AutoZone:

    [​IMG]
     
  11. JASV.17

    JASV.17 Prime Example

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    Tantrix,

    Thank you sir, much appreciated!