2014 3.7 electric fan issues. Any gurus here?

Discussion in '2011+ Ford Mustang V6 3.7L Tech' started by Stephen Rose, Jun 25, 2020.

  1. Stephen Rose

    Stephen Rose Junior Member

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    Ok first my wife has a 14 with 82K on the clock and yesterday coming home we noticed the A/C would get warm at red lights so I immediately knew there was an airflow problem. The car made it home before getting hot and I immediately shut it off to cool down.
    After restarting the fan wasn’t coming on so I immediately swapped relays around and it came on. The issue is the original relays still operated their new functions (blower motor, rear window defrost). I checked the fan resistor (removed)and it doesn’t show any signs of heat damage to it or the plug. I’m going to assume the temp switch wouldn’t be this intermittent and that leaves me with disassembling the BEC correct? The fan is currently working on both high/low cycles and I’ve taken it through many drive cycles without a repeated failure.
    If the BEC is burned on the high side of the fan should I wire an external relay? Replace the fan to ensure it’s not pulling too many amps? Does anyone have a diagram for this or any Advice? It’s my wife’s car and the last thing I need is blown headgaskets from her not noticing the temp gauge. I appreciate any help.
     
  2. golkhl

    golkhl forum member

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    It might be easier to replace the entire fan assembly with a new one, looks like they sell for $85-$125 on ebay.
     
  3. Stephen Rose

    Stephen Rose Junior Member

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    I did. I bought a new one from Ford and installed it but still have the same problem. I will add that when the fan isn’t working the temp gauge acts slow and isn’t accurate
     
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