Question about 2001 Nissan Quest

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Switch for for ac/heat only blows on #4. please what is my problem?

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There are only a few things that could cause this, so I would recommend that you start with the simplest thing first, and that would be to check the fuse panel. There should be two fuses for the blower, you can be sure that one of them is good because you can operate the fan on 4, there is another for speeds 1-3. If the fuses are both good, then what you will want to check is the blower motor resistor, and this is found next to the blower motor. If the resistor is faulty, then you will only have speed number 4, this is due to the fact that on the high speed, the resistor is bypassed. This is more than likely the issue. The resistors are about 20-30 dollars, and you could just pick one up at a salvage yard to save a few dollars. The last thing that I would check is the actual fan switch.

Posted on Mar 21, 2011

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