My AC died for the 3rd time this summer. Want to guess, HP hose or Compressor?

[-RAC-]

The HP hose were leaking at the weld point.

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[cerbomark]

Is this issue thru all the trims or mostly gt350s? Are the systems the same?

 

[16Fastback]

I must be doing something wrong because I haven’t replaced my air-conditioning yet after eight years and 30,000 miles.

Best of luck but you haven't reached the 36000 mile mark mine went 8 yrs also but at 36036 miles it died.
Evaporator core!

 

[Postal Bob]

I honestly believe it's the heat generated by these engines, and the high rpm's the compressor's pulley spins at.
Have you ever looked at the inlet air temp if you're sitting in traffic on a hot day? Mine routinely hits 150°+. Then when you come home, all that heat is trapped under the hood. Something is sure to go. That's why whenever I come home after a spirited drive, I always turn off the car, and then open the hood so the engine bay can cool down. I had my battery tender connections on the battery start to melt/deform once, before I started opening the hood. That's how much heat is under the hood after a big drive. What do you think that heat does to all the a/c hose connectors and o-rings?

 

[-RAC-]

I honestly believe it's the heat generated by these engines, and the high rpm's the compressor's pulley spins at.
Have you ever looked at the inlet air temp if you're sitting in traffic on a hot day? Mine routinely hits 150°+. Then when you come home, all that heat is trapped under the hood. Something is sure to go. That's why whenever I come home after a spirited drive, I always turn off the car, and then open the hood so the engine bay can cool down. I had my battery tender connections on the battery start to melt/deform once, before I started opening the hood. That's how much heat is under the hood after a big drive. What do you think that heat does to all the a/c hose connectors and o-rings?

I use to do this and got a bit lazy, I'll be going back to doing this.

 

[-RAC-]

Best of luck but you haven't reached the 36000 mile mark mine went 8 yrs also but at 36036 miles it died.
Evaporator core!

I started having issues once I went beyond the 3 year 36k mark.

 

[sk47]

Hello; A question. Many Mustang owners post about parking the cars during winter for several months. A thing i have heard is the AC compressor ought to be run a couple times a month to keep the oils circulated and thus keep the seals lubricated. This may not be a true thing but makes sense. I drive any vehicle I have all years and do make it a point to do this.

I did work on the cars of a friend for a few decades. He had several cars and had the practice of parking them for months to years. His reasoning was it cost too much to keep them all insured so he would switch them out and only keep two or three insured. He had Ac failures.

 

[robvas]

I honestly believe it's the heat generated by these engines, and the high rpm's the compressor's pulley spins at.
Have you ever looked at the inlet air temp if you're sitting in traffic on a hot day? Mine routinely hits 150°+. Then when you come home, all that heat is trapped under the hood. Something is sure to go. That's why whenever I come home after a spirited drive, I always turn off the car, and then open the hood so the engine bay can cool down. I had my battery tender connections on the battery start to melt/deform once, before I started opening the hood. That's how much heat is under the hood after a big drive. What do you think that heat does to all the a/c hose connectors and o-rings?

Might as well stick a fan on there too. That engine that the compressor is bolted to isn't cooling down any time soon even with the hood up.

 

[mindo389]

I asked earlier about where the hose failures occurred. I probably should have been a bit more specific: were the cracks near the condenser, compressor, or near the evaporator? I'm looking for vibration issues, coupled with poor manufacturing. Either way, it appears that Ford will be eating the bill.
Oil in any HVAC-R system will tend to migrate to the coldest part of the system, usually back into the compressor or evaporator.
I don't know about winter storage, but there's no harm in running the A/C now and then when running the engine to maintain battery integrity.

 

[-RAC-]

I asked earlier about where the hose failures occurred. I probably should have been a bit more specific: were the cracks near the condenser, compressor, or near the evaporator? I'm looking for vibration issues, coupled with poor manufacturing. Either way, it appears that Ford will be eating the bill.
Oil in any HVAC-R system will tend to migrate to the coldest part of the system, usually back into the compressor or evaporator.
I don't know about winter storage, but there's no harm in running the A/C now and then when running the engine to maintain battery integrity.

I was told the failure was at the weld point. I didn't ask any further. Car goes in Wednesday to see what the current issue is.

 

[BrakeFade]

The HP hose were leaking at the weld point.

Sounds like a MFG quality issue where the crimps failed prematurely. Are they using genuine Ford parts? I've heard of some dealers going cheap 3rd party on parts like high & low pressure hoses. Not saying your dealer did but make sure it is a genuine Ford part.

 

[-RAC-]

Sounds like a MFG quality issue where the crimps failed prematurely. Are they using genuine Ford parts? I've heard of some dealers going cheap 3rd party on parts like high & low pressure hoses. Not saying your dealer did but make sure it is a genuine Ford part.

They say they only use Ford motor craft parts.

 

[Crew4991]

This weak point seems to only affect certain cars. I've had two 2016 model year convertibles now and both had the original AC unit in them. Never experienced any issues with either and those AC units are used regularly in Phoenix Arizona summers.
Very surprising that some folks go through multiple units in one summer alone. I must have gotten lucky.

 

[Sean22]

I must be doing something wrong because I haven’t replaced my air-conditioning yet after eight years and 30,000 miles.

You better find a piece of wood to knock on!

 

[GrabberBargeCaptain]

I honestly believe it's the heat generated by these engines, and the high rpm's the compressor's pulley spins at.
Have you ever looked at the inlet air temp if you're sitting in traffic on a hot day? Mine routinely hits 150°+. Then when you come home, all that heat is trapped under the hood. Something is sure to go. That's why whenever I come home after a spirited drive, I always turn off the car, and then open the hood so the engine bay can cool down. I had my battery tender connections on the battery start to melt/deform once, before I started opening the hood. That's how much heat is under the hood after a big drive. What do you think that heat does to all the a/c hose connectors and o-rings?

imo more likely drivetrain shock over time leading to small cracks in the evap cores. modern evap cores are made out of like tin foil. even the new hvac coils for your house in your new 15k system are really delicate.

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