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Chat with a retired mechanic about my Ford's alternator location changed my mind
Last Saturday I was swapping out a dead battery in my 2015 Fusion and this older guy walks up in the parking lot. He sees me cussing at the serpentine belt and asks what year it is. I tell him and he just laughs. He said Ford engineers put the alternator on the bottom passenger side on purpose so it'd get soaked by puddles and die every 60k miles. Said they did it to sell more parts. I always thought it was just bad luck but that dude made me realize how much of car design is intentional crap. Anyone else hear stories like that about specific models?
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leo_harris18h ago
Whoa hold on, I gotta call something out on that. The alternator location on those Fusions isn't about making it die from puddles. I swapped one on my buddy's 2014 and it sits behind the passenger wheel well but it's actually pretty shielded. The real issue is Ford designed the alternator to run at a higher RPM than normal, so the bearings just cook themselves over time. It's not malicious, it's just bad engineering trying to squeeze a little more juice out of a small alternator. I think the old mechanic might have been mixing up stories, he probably had a run-in with a Focus or something that had a real water issue. Still, it's wild how much stuff on modern cars is designed to barely last past the warranty.
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The higher RPM theory makes a lot more sense than puddle sabotage, especially since Ford has been pushing those little alternators to their limit for years. Once you notice how many parts on a modern car are designed with a specific lifespan in mind, it's hard not to see it everywhere from water pumps to plastic intake manifolds. Still, I'd rather believe the old guy's story because it's way more entertaining than admitting engineers just cut corners.
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