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10/08/2021 11:46 am
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Scotty, I have a '07 Ford E350 w/auto and 5.4L, lightly used 68k miles, 80% highway pulling relatively light box trailer. At highway speeds it's developed a squeal which comes after a few miles driving and is loudest and most frequent when coasting and stops or diminishes when the accelerator is even lightly pressed. I've ruled out engine/belt/alt/water pump etc.(doesn't change pitch or volume when coasting in neutral and engine is rev'd). Can't discern right or left. Where do I start?
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