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Air conditioning electrical help #4497374
08/24/17 09:59 PM
08/24/17 09:59 PM
Joined: May 2006
Posts: 2,211
Lakeside CA
another Todd Offline OP
another Todd  Offline OP
Joined: May 2006
Posts: 2,211
Lakeside CA
2007 ford focus. AC compressor engages and AC light in switch is on with fan switch set to low (1), but fan does not run, so no cold air. When the fan switch is in any other position (2, 3, or 4) fan works fine, but ac clutch disengages and blue light in AC switch goes out.

I removed the fan switch, if I jumper hot, fan 1 plus any other fan setting AC engages and fan runs and I get very cold air.
I disassembled the switch and it appears to be a straight forward switch, it passes an ohm test in all positions and does not appear to have any kind of jumper between 1 and the other positions.

Not sure where to go from here...came to Phoenix to fix daughters car and will only be here a couple days.


2015 Ford F250 Diesel Crew Cab FX4
2017 Ford Escape 2.0
2002 GMC Yukon
2015 Hyundai Accent
2008 Yamaha Rhino 700 FI
Re: Air conditioning electrical help [Re: another Todd] #4497383
08/24/17 10:23 PM
08/24/17 10:23 PM
Joined: Aug 2009
Posts: 3,909
Pittsburgh,PA U.S.A.
JimPghPA Offline
JimPghPA  Offline
Joined: Aug 2009
Posts: 3,909
Pittsburgh,PA U.S.A.
Look for a new switch on e-bay. Usually you can find new switches on e-bay for about 1/10 of what a dealer wants for the switch.


Boy will I be happy when ALL vehicles on public roads are autonomous.


JimPghPa

Re: Air conditioning electrical help [Re: another Todd] #4497405
08/24/17 11:17 PM
08/24/17 11:17 PM
Joined: May 2006
Posts: 2,211
Lakeside CA
another Todd Offline OP
another Todd  Offline OP
Joined: May 2006
Posts: 2,211
Lakeside CA
Based on a youtube video I just bought a blower relay from Autozone, will install in the morning.


2015 Ford F250 Diesel Crew Cab FX4
2017 Ford Escape 2.0
2002 GMC Yukon
2015 Hyundai Accent
2008 Yamaha Rhino 700 FI
Re: Air conditioning electrical help [Re: another Todd] #4497654
08/25/17 10:30 AM
08/25/17 10:30 AM
Joined: May 2012
Posts: 4,485
Baltimore, Maryland, USA
zzyzzx Offline
zzyzzx  Offline
Joined: May 2012
Posts: 4,485
Baltimore, Maryland, USA
Relays can be, and should be bench tested before replaced.

Re: Air conditioning electrical help [Re: another Todd] #4497687
08/25/17 11:19 AM
08/25/17 11:19 AM
Joined: Sep 2015
Posts: 1,553
USA
mk378 Offline
mk378  Offline
Joined: Sep 2015
Posts: 1,553
USA
That is the classic symptom of a burned out resistor. Surprising they'd still use a resistor system in 2007 though.

Re: Air conditioning electrical help [Re: another Todd] #4501511
08/29/17 05:04 PM
08/29/17 05:04 PM
Joined: May 2006
Posts: 2,211
Lakeside CA
another Todd Offline OP
another Todd  Offline OP
Joined: May 2006
Posts: 2,211
Lakeside CA
The blower resister is what I meant to say I bought, installed, and all is well. Thanks


2015 Ford F250 Diesel Crew Cab FX4
2017 Ford Escape 2.0
2002 GMC Yukon
2015 Hyundai Accent
2008 Yamaha Rhino 700 FI
Re: Air conditioning electrical help [Re: another Todd] #4501513
08/29/17 05:07 PM
08/29/17 05:07 PM
Joined: Sep 2015
Posts: 1,553
USA
mk378 Offline
mk378  Offline
Joined: Sep 2015
Posts: 1,553
USA
Check the ductwork for a mouse nest, because when airflow over the resistor is impaired, it will burn out.

Re: Air conditioning electrical help [Re: another Todd] #4501590
08/29/17 06:43 PM
08/29/17 06:43 PM
Joined: May 2006
Posts: 2,211
Lakeside CA
another Todd Offline OP
another Todd  Offline OP
Joined: May 2006
Posts: 2,211
Lakeside CA
The car is in Phoenix, I am 6+ hours away. It was actually blowing very well, and 32.3 degrees on low fan setting. She loves it. Bought part at Autozone for less than $14 with a lifetime warranty, and they had it in stock.


2015 Ford F250 Diesel Crew Cab FX4
2017 Ford Escape 2.0
2002 GMC Yukon
2015 Hyundai Accent
2008 Yamaha Rhino 700 FI

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