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Discussion Starter · #1 ·
Has anyone experienced problems with the heater not working? With winter around the corner I turned mine in today and it's not blowing hot air. Warmish air maybe but obvious that something is wrong. I let it run forever even with a warm engine. I thought maybe a fuse but I could be wrong.


2012 Kona Blue MCA Cyclone
AIRAID CAI
4.10 gears
Ford Racing Axle Backs
'Unknown Tune'
 

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Is your temperature gauge needle going up to the normal range?
 

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Faulty thermostat is a possibility also.
Are the heater hoses going to and from your heater, hot or warm? If just warm, could be lack of flow as previously mentioned or thermostat.
 

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good question...also check fluid level (not insulting). idk about newer ones but Ford used to have issues with blend door failures.

Texas guy complaining about lack of heat!
 

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good question...also check fluid level (not insulting). idk about newer ones but Ford used to have issues with blend door failures.

Texas guy complaining about lack of heat!
Can get pretty cold at night on those Texas prairies. I think I've seen that in some movies.:D
 

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Discussion Starter · #9 ·
lol I don't need the heater right now, I just know it'll be in the 30's for at least a week sometime this winter ?. I just got my oil changed the other day and they topped off fluids but when my car cools off I will check them. As for the heater hoses, I'm completely ignorant as to where they are so I'll have to look into that. I do have the extended bumper to bumper warranty so I'll probably take advantage of that along with some other things before it runs out. I have 10,000 more miles until I hit 80k. ?


2012 Kona Blue MCA Cyclone
AIRAID CAI
4.10 gears
Ford Racing Axle Backs
'Unknown Tune'
 

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lol I don't need the heater right now, I just know it'll be in the 30's for at least a week sometime this winter ?. I just got my oil changed the other day and they topped off fluids but when my car cools off I will check them. As for the heater hoses, I'm completely ignorant as to where they are so I'll have to look into that. I do have the extended bumper to bumper warranty so I'll probably take advantage of that along with some other things before it runs out. I have 10,000 more miles until I hit 80k. ?


2012 Kona Blue MCA Cyclone
AIRAID CAI
4.10 gears
Ford Racing Axle Backs
'Unknown Tune'
Let us know what the problem was!!!
 

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Discussion Starter · #11 ·
Forgot to answer on what the problem was. I put water in my radiator fluid reservoir to fill it back up and it works fine. Now I just need to find my leak.


2012 Kona Blue MCA Cyclone
AIRAID CAI
4.10 gears
Ford Racing Axle Backs
'Unknown Tune'
 

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Take a small mirror and check the bottom of the water pump. It has a very small hole called a 'weep' hole. If its leaking you will probably need to replace it :)
 

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^^^^good guess

Trevor, Google Updated Mustang overflow hose or search the V6 forum. There have been a few water pump failures when the overflow does not have a check valve.

most have had it replaced (pump not hose) if it leaks under the 5/60. Several of us updated the hose as preventive
 

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Discussion Starter · #15 ·
Gotcha. I'll look into it. I appreciate it guys!


2012 Kona Blue MCA Cyclone
AIRAID CAI
4.10 gears
Ford Racing Axle Backs
'Unknown Tune'
 

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I had this same problem tonight. No heat with warm engine. Heat came out for a bit when engine revvved up around 3k. Put coolant in near empty reservoir and I had heat. No puddles on the ground. Is water pump gone or is the check valve fix enough to fix this problem. Going to bring it in to dealer next week.


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I had this same problem tonight. No heat with warm engine. Heat came out for a bit when engine revvved up around 3k. Put coolant in near empty reservoir and I had heat. No puddles on the ground. Is water pump gone or is the check valve fix enough to fix this problem. Going to bring it in to dealer next week.


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Once the water pump fails the check valve won't fix it. If your dealer does replace the water pump, check to see if they replace the check valve hose. If they didn't you can order one and replace it yourself, I think mine was $22. Let us know how it goes :)
 

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Took it in to dealer who pressure tested the system and no apparent leaks. Not sure where the coolant went. I did order a new check valve hose and will probably install it when it gets above freezing.


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