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Compressor cycling fix

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Old 09-01-2014, 10:48 PM
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Default Compressor cycling fix

2011 F150 XLT crew 3.7l 168850 miles Installed 10k Ohm potentiemeter on evaporator sensor side of conector plug. Adjust to control cycling. So far... No more cycling. Temp at vents under 40 deg. $2.00
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Last edited by Bigdog364; 09-02-2014 at 10:01 AM. Reason: truck year and model
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Old 09-01-2014, 11:16 PM
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Where is the plug you are installing this on?? Is it the low pressure switch?? Is the potentiometer set to the full 10k_Ohm?? Need some more info man. Interested in this. But you will need to be careful cooler days cause it will freeze up your coils.
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Old 09-02-2014, 08:55 AM
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Default More info ...

Behind the glove box you will see black wire coming out of the box. Right where the two halves come together. Follow it up about 6 inches to where the plug is next to the wiring harness. This is the evaporator temp sensor. I set the potentiemeter about mid range as a starting point to See what kind of adjustment there is. I live in Miami. It'd 85 degrees feels like 98. So far no freeze up. Mine was cycling at 9 second intervals. I will put a voltmeter on it and check the voltage drop from 5 volts. When I get more info I will post it.
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Old 09-02-2014, 08:57 AM
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What year truck did you do this on?
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Old 09-02-2014, 09:37 AM
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Interesting. I would like to hear more about this.
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Old 09-02-2014, 10:04 AM
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What were your vent temps then and now?

Outside temps??

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Old 09-02-2014, 10:18 AM
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Originally Posted by Sherlock View Post
What were your vent temps then and now?

Outside temps??

Thanx
now 40 deg before 55-60. Outside 85-95 Miami.
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Old 09-02-2014, 10:57 AM
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First off: wow I'm interested.

Secondly: 168k miles on a 2011? Whoa dude that's a lot of driving!
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Old 09-02-2014, 11:21 AM
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I understand how this works what I want to know is. Is there a way to edit the system so that the cutoff is at a lower psi. I did this and I got temps in the 20's. That's awesome but the system will freeze if ran too long like that.
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Old 09-02-2014, 11:41 AM
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Subscribed. Like to hear more.
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