My ac blower is driving me crazy

[Xxl2]

The fan wont work on any speed. I took the fan out and got around a reading a 12 v on speeds 1-3 then when i turned it on hi nothing then. So i hooked up a new motor my voltage gos to zero and the fan wont come on. Take the motor off i get a reading. Then i replaced the resitor nothing changed. What should my next step be?

 

[frito-bandito]

Check to see if the plug behind your fan speed switch is melted. This is a common issue, you’ll need to unplug it from the back of the switch to inspect

 

[SUBURBAN5]

Sorry ima bit slow... so your sure your blower switch is good? There's contacts that go back and does the symptoms your talking about

 

[east302]

The blower uses a relay (next to the resistor) for high speed. See if you have battery voltage on the red (542) and orange (52) wires with switch on high.

Are you checking these voltages using the blower ground wire as your meter ground or just to a spot on the chassis?

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[Erik the Awful]

If you have 12v at the fan connector, and the fan doesn't run, that's a pretty good indication your ground circuit is open.

 

[Xxl2]

the plug on the fan switch looked a bit melted i should get a replacment and wire it in Where can i get a replacment?>

 

[frito-bandito]

the plug on the fan switch looked a bit melted i should get a replacment and wire it in Where can i get a replacment?>

I always just got mine from the junkyards if they looked good

 

[Xxl2]

thanks for all the help guys i ll look around

 

[Steve A]

RockAuto has them, at least for some vehicles. Some are a little pricey though.