A/C problem

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Oct 18, 2005 | 09:43 AM

fourwheeler88

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A/C problem

Hey guys i had a question about my truck (2000 psd cc sb) my a/c only works on high and not on low or medium. Is this some sort of relay problem or is it a fan problem? any help is appreciated....thanks in advance

Oct 18, 2005 | 10:09 AM

Kwikkordead

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From: Rio Rico, AZ.

You mean the blower fan?

Oct 18, 2005 | 10:14 AM

mech2161

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From: Morgantown WV

Blower motor resistor. Next to the blower.

Oct 18, 2005 | 10:16 AM

fourwheeler88

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im not sure but when i turn the ac on and turn the fan **** to low or medium it wont work but when i turn it to high it will work.... im lost on this

Oct 18, 2005 | 10:29 AM

mech2161

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From: Morgantown WV

Quote:

Originally Posted by mech2161

Blower motor resistor. Next to the blower.

I tried to tell you what was wrong. The resistor works all the speeds except high.

Oct 18, 2005 | 10:38 AM

wilbur996

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From: Port Murray, NJ

Most likely as stated it is the blower motor resistor. The same thing should happen when the heat is on. The fan will only work on high. Try it on heat setting too. I do not know where it is located on your truck but the typical location is under the hood next to the blower motor on the heater box. Follow the wires from the blower motor and you will find the resistor. I think it is a 3 wire plug. It looks like a little plate with 1 screw holding it on. The resistors are on the inside side of the heater box so air gets blown across them to cool them off.

Good luck.