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Old 03-03-2010, 02:01 PM
velozp velozp is offline
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Default Interior fan works on only low & high speed

Hello I have a 99 ford ranger 2wd. It seems that my interior fan speed switch only works on the lowest and highest speed. The other 2 medium speeds blow just like the lowest speed. At times however only the high speed works. Thank you for any help or assitance. Thank you




Just to clarify the ac and heat work ok its just the speeds that are off. Also I did some research, it may be the HVAC resistor pack or the fan speed switch itself. Any ideas which one would be the cause of the above issue? thanks Ranger owners.

Last edited by velozp; 03-03-2010 at 02:55 PM.
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Old 03-03-2010, 05:36 PM
rwenzing rwenzing is offline
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Quote:
Originally Posted by velozp View Post
Also I did some research, it may be the HVAC resistor pack or the fan speed switch itself. Any ideas which one would be the cause of the above issue? thanks Ranger owners.
It could be either but there is a MUCH higher failure rate in the blower resistor block. The resistor assembly is also cheaper to replace than the switch.

One other thing to check is the condition of the electrical connector at the resistor block. The pins have a tendency to corrode over time.
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Old 03-04-2010, 03:57 AM
velozp velozp is offline
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Do you have an idea where this HVAC pack is? I did find a detailed step by step for a ford explorer. Im guessing you have to take the blower motor cover off ( under the hood) to get at it and is this a dealer only part or will napa have it, thanks alot for the help.
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Old 03-04-2010, 05:15 AM
rwenzing rwenzing is offline
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The resistor block is easily accessible right next to the blower in the plenum. Look for a 4-wire connector plugged onto a plastic plate with 2 screws. You can get it at the dealer or at an auto parts store. Either way, should be under $20.
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BW4406 manual transfer case, Aussie Locker, Torsen L/S, 4.10's
Bilstein 7100 rezzies, Cadillac/Mustang rear discs, Duff traction bars
Keypad Entry, Lock LEDs, ABS switch, sway bar discos
Heated seats, Explorer EATC, Trip Computer and consoles

2003 XLT 2.3L M5OD-R1 reg cab, 2011 Taurus SEL, 2016 C-MAX Energi Plug-in Hybrid
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