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I'm having trouble with my ac. I'm getting a code 48 now but…

Customer Question
I'm having trouble with...

I'm having trouble with my ac. I'm getting a code 48 now but I'm trying to find where i can buy a evaporator inlet temperature sensor from. Never seen one a line by itself.

Mechanic's Assistant: Do you have a scan tool to read the codes?

No i don't. I'm guessing it's the pressure switch

Mechanic's Assistant: What is the model/year of your Cadillac?

1991cadillac brougham d'elegance/ 5.7

Mechanic's Assistant: What year is your Brougham?

1991

Mechanic's Assistant: Are you fixing your Brougham yourself? What have you tried so far?

A ac relay.and recharging after i remove the sensor/switch. It stay on for so long then cut off. When it's cooler outside it may stay on longer. I was getting cold 119 but today i got a 48

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Just is there anywhere to purchase that sensor/switch

Submitted: 5 months ago.Category: Cadillac
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Answered in 11 minutes by:
11/13/2017
Cadillac Mechanic: roybelding, ASE Certified Technician replied 5 months ago
roybelding
roybelding, ASE Certified Technician
Category: Cadillac
Satisfied Customers: 7,276
Experience: 35 years of retail operations working on all vehicles.
Verified

hello, my name is ***** ***** I will be glad to assist you. please allow me a couple of minutes to gather some basic info.

Roy

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Cadillac Mechanic: roybelding, ASE Certified Technician replied 5 months ago

let me check

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Cadillac Mechanic: roybelding, ASE Certified Technician replied 5 months ago

see no updated number or anything in new old stock.

the only thing I could suggest is to find a caddy in the junk yard and take the one from there.

Roy

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Customer reply replied 5 months ago
Is it possible that the problem the switch
Customer reply replied 5 months ago
Hello
Customer reply replied 5 months ago
Why is the car now showing code 48
Cadillac Mechanic: roybelding, ASE Certified Technician replied 5 months ago

trying to find the code

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Cadillac Mechanic: roybelding, ASE Certified Technician replied 5 months ago

how did you bring up that code??? is there a letter in front of it

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Customer reply replied 5 months ago
With the climate control from the car and no .Just 48
Cadillac Mechanic: roybelding, ASE Certified Technician replied 5 months ago

what buttons did you push??

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Customer reply replied 5 months ago
Off and warm button
Cadillac Mechanic: roybelding, ASE Certified Technician replied 5 months ago

thats an engine code for an egr fault. not the ac.

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Customer reply replied 5 months ago
That code came up today. Ac compressor want come on it go from auto to econ
Cadillac Mechanic: roybelding, ASE Certified Technician replied 5 months ago

ok, you have 2 issues.

do you have ac gauges to check the high and low pressures???

Roy

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Cadillac Mechanic: roybelding, ASE Certified Technician replied 5 months ago

ok, hook them up and give me the high and low side pressures

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Customer reply replied 5 months ago
Without the compressor engaging?
Cadillac Mechanic: roybelding, ASE Certified Technician replied 5 months ago

yes

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Customer reply replied 5 months ago
Low side 0 high side around 500
Cadillac Mechanic: roybelding, ASE Certified Technician replied 5 months ago

with the engine off???

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Cadillac Mechanic: roybelding, ASE Certified Technician replied 5 months ago

if the engine was running and the compressor on, then you have a bad expansion valve. you have no circulation. you will need to recover the freon and remove the expansion valve and check for metal in the valve. you will need at least a expansion valve and a receiver/dryer

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roybelding
roybelding, ASE Certified Technician
Category: Cadillac
Satisfied Customers: 7,276
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Experience: 35 years of retail operations working on all vehicles.

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