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Discussion Starter #1
To some it might be stupid but not to me. I am in Mississippi and it's done got hot. My wife says she need air or else:thepan: The code is AC1314, I know this code means Evaporator Inlet Temp Sensor Open Circuit, but how do I fix it?
Thanks
 

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Sedan de Ville, CTS
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Engage a mechanic, but don't let your wife know.

With all of the mechanics on the forum, you should have some answers today. Me not that smart.
 

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1992 STS / 2005 MB G500 / 2003 STS / 2006 XLR-V
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Ranger or one of the more experienced techs should be able to get you some answers. Trust me, you dont want to piss your wife off with a hot car... it goes real bad.
 

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White Diamond '03 DHS (with DTS floor shift)
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I think the "cut off" switch might be the low pressure switch. By definition I would think the evaporator inlet temperature switch would be near the evaporator inlet. A FSM would be invaluable as would the year of your car. If you can locate it, check the connector. Other than that, I will defer to Ewill3rd or one of the other techs.
 

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1996 STS (181,000) Arnott Struts, 245/45/ZR18, 1" Drop -SOLD
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That's not a stoopid question -- you should see mine.
 

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Discussion Starter #8
I guess this is not as stupid question as I thought. Does anyone know how to correct this problem?
 

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99 Seville STS, 08 STS4 N* 1SG F55
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Check the sensors on the AC plumbing under the hood to see if they are disconnected or have a broken wire. I had a problem with my CDV where it was throwing an AC high side over temperature code and shutting the AC down. Turned out to be a bad BCM, so keep in mind the sensors could be OK but the computer's gone south. Start with the sensors first and work your way back. If you can't find anything wrong with the sensors take it to an AC shop and have them check the pressures in the system.
 

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Discussion Starter #10
Ok, yesterday I unhooked the low temp sensor and put a paper clip in the connector to jump it, ran the codes and it said AC1314 history. Reckon this means a bad sensor?
 

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White Diamond '03 DHS (with DTS floor shift)
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Seeing as you took the sensor out of the loop and it went to history, I would suspect the sensor.
 

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Discussion Starter #12
Thanks Ranger, this problem has been giving me fits. I will try a new sensor today and post the results.
 

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White Diamond '03 DHS (with DTS floor shift)
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You will most likely need to have the system evacuated to R & R the sensor. Then Vacuum it down before recharging it.
 

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Cadillac
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Re: oil alert

I need help with a message I keep getting that say's 'check oil level' but the oil level is fine. I've tried changing the oil but the problem does not go away. It's annoying not to mention scary. I love my 96' Eldorado any idea's ?
 

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White Diamond '03 DHS (with DTS floor shift)
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:tisk: Don't hijack the thread. Start a new one. Your problem is simple. Will answer in new thread.
 

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Discussion Starter #16
Thanks Ranger, that did the trick. I put the new sensor in, vacuum the line and two cans of freon later cold air and a happier wife.
 

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Sorry I am late.

The evaporator inlet temp sensor is a "thermistor" or a device that changes resistance with temperature. The cycling switches or cutoff switches are simple switches that open or close depending on pressure.

The temp sensors will usually set codes if you do something like disconnect and jumper them with a paperclip, that would be a shorted condition which is a failure. The computer applies a voltage accross the resistance and knows the temperature by the "voltage drop" accross the sensor.
It uses that information to control system operation (so the evaporator doesn't freeze up).

Sometimes they fail because someone worked on the car and put the orifice tube in backwards. I have seen it happen a few times.
It can be really hard to fix if the orifice tube won't come out.

Glad to hear it is fixed already.

Nice work!
 
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