Thump noise heard - Diesel Forum -
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post #1 of 3 (permalink) Old 04-05-2010, 11:49 PM Thread Starter
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Thump noise heard

I am a first time owner of a 2010 F250 Super Duty, Lariat, 6.4 PSD. Also my first ever diesel... I bought the truck with 6800 miles on it. I have been hearing a thumping noise when I take off from a stop. Not loud but enough that I can feel it in the truck and dont know if this is normal. Can anyone help me on this issue if any.

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post #2 of 3 (permalink) Old 04-06-2010, 11:31 AM
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I hear a thumping noise from inside the cab near the passenger area and I'm told it's coming from the cabin air vent box. The popping is coming when the diverter closes the door. I only hear it when I have the heat on.

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post #3 of 3 (permalink) Old 04-06-2010, 12:09 PM
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I had the same thing. I thought it was suspension. It was like a soft thud from the front right side. Then I noticed it never happened with the ac compressor off. So I figured ac compressor and or clutch. Turns out it was the ac accumulator some way. These are weird trucks.
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