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No air from rear vents

Discussion in '3rd Gen - 2007 - 2017' started by drokmofo, Sep 15, 2020 at 12:56 PM.

  1. Trainmaster

    Trainmaster Old School Member

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    If the front is working fine and the rear's not, your Freon's fine. No need for gauges or any of that stuff.

    If the rear blower is not blowing you have an electrical problem, probably with the controller, fuse or rear blower motor. If the rear motor's running but you get no airflow you have a blend motor problem or maybe a clogged rear evaporator.
     
  2. 07navi

    07navi Full Access Members

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    He said the front isn't very cold and we all can use those gauges, especially him right now. Of course cold air won't fix the rear problem but he will need it eventually.
     
    Last edited: Sep 16, 2020 at 12:10 AM
  3. drokmofo

    drokmofo Full Access Members

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    So, I got into the rear ac compartment and beat the fan motor a couple times with my hand and it kicked on. I can change the speed some by hitting it multiple times. Me caveman. Doesn't sound real smooth but it is flowing again. I'm going to add some r134 and see what the temp does. Going to price out the blower motor locally. Have it in cart on rockauto. I may still buy some gauges or borrow from bro in law....
     
  4. 07navi

    07navi Full Access Members

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    Like I said the gauges won't fix you rear ac problems but they are needed if you are going to maintain your AC system. You would pay more to have someone check it than a pair of gauges would cost plus you wouldn't learn anything. Let us know what your readings are and the ambient temperature.
     
  5. drokmofo

    drokmofo Full Access Members

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    I haven't put gauges to it but I did add maybe 16oz r134. Just idling in the driveway the temp got down to 65* at the front vents. The rear blower motor is all over the place with it's output. I put my arm in thru the cupholder tray and bang on it to increase flow. It was 104* today while I was working on this. I will be ordering a new blower motor from rock auto. $75 for a motorcraft blower and $27 for the resistor. Should I get the resistor? Thx for your continued input 07navi
     
  6. 07navi

    07navi Full Access Members

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    IDK about the resistor, probably not. Wow that's 40* colder than outside, I'm lucky to get it 25* colder at the vents on the freeway. Be careful adding refrigerant without the gauges though, you can slug the compressor and destroy is with too much. At those outside temps your high side will be well over 200.
     

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