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Ronnie, ASE Certified Technician
Category: Lincoln
Satisfied Customers: 35619
Experience:  35 years as an automotive tech
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2004 Lincoln LS V8. a/c blowing hot air. started a week ago

Customer Question

2004 Lincoln LS V8. a/c blowing hot air. started a week ago intermitten cold, cool, warm, cold and now all hot air. Mech checked it and compressor good, freon fine. I replaced the control valve but still same issue. Can you assist with suggestions?
JA: Have you checked the coolant level? Have you checked for a leak in the radiator?
Customer: All is fine there
JA: Are you fixing your LS yourself? What have you tried so far?
Customer: yes, see above response
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 11 months ago.
Category: Lincoln
Expert:  Ronnie replied 11 months ago.

Hello. My name is ***** ***** I am happy to assist you today. Give me just a moment to review your post, and I'll be right back with the help you need.

Customer: replied 11 months ago.
Expert:  Ronnie replied 11 months ago.

If you run the self test on the control panel what are the fault code your getting?

Customer: replied 11 months ago.
27 97 and 12 65
Expert:  Ronnie replied 11 months ago.

The code that sticks out for the problem you are having is the 2797 code which indicates the Driver coolant control valve open circuit . Are you able to test the system if I send the steps?

Customer: replied 11 months ago.
Expert:  Ronnie replied 11 months ago.

Okay I have enclosed the complete systems diagnoses file. Your going to want to scroll down to pinpoint test J1 for this code. Have a look and see if this will help you determine the cause.