machsmith
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Im sure its a simple fix...darn bean counter cheap parts
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Mine can go a month and then suddenly, two hours from home, on a smokin hot day....hot humid air fills the car.Mine started working fine again shortly after I posted this. A fluke, I guess? I've heard of a lot of Mustangs doing this, though - and needing an evap replacement.
I can relate to your situation. I’ve had my GT350 replaced the evaporatir twice, and the compressor and accumulator once, all within 10,000 miles.Had my new evaporator installed a couple of weeks ago (4th ac repair) .Just started blowing warm air again with no intermittent cold air this time. So after compressor and evaporator replacement, what are the other culprits involved here that could be causing the problem?
The evaporator assembly part# on my work order is FR3Z19850Y.I can relate to your situation. I’ve had my GT350 replaced the evaporatir twice, and the compressor and accumulator once, all within 10,000 miles.
What evaporator part # was last installed in your car? (mine is part W).
About “culprits” orher than manufacturing defects in these OEM A/C parts, may include excessive heat and/or vibration from the engine. Design issues.
I’ve wondered if the design of the A/C systen in the S550 Mustangs should have specified for a different (or more heavy duty) compressor and evaporator. I haven’t been able to find who is the source manufacturer of these parts to know if Ford could have specified other applications but did not for cost reasons.
My guess is as good as yours.
I had this issue. Mine was the evap like everyone is saying. It would blow cold but as soon as it got warm outside it would start blowing warm stale air. It was fixed around 2k miles I think. Then same thing happened around 14k. On a side note, those of you that get your oil changed at a dealer, always make sure to check your oil level and what they’re charging you for. They filled mine with an additional 4 qts...So at 3800 miles, the AC in my R is acting up. I drove to work today and when I left, it seemed like it was blowing 100% warm but it cooled every once in a while on the way home. I messed with it some more when I got home and determined that the passenger side is cooling (although not at 100%) and the drivers side seems like it's not cooling.
How does the air pass through the condenser? Does each side of the car come from one side of the condenser? What I'm imagining is that the system is malfunctioning and can somehow get half of the unit cold.
The other possibility is whatever they are using for a mixing valve for the dual temp control....but like I said, the passenger side doesn't seem to get 100% cold, either - so I suspect a systemic issue.
Y is the latest version for cars fitted with dual a/c controls. W is for single controls (same temp for all vents). I'm currently in the third evap part (OEM, O, and now W).The evaporator assembly part# on my work order is FR3Z19850Y.