Dual Mass Fly Wheel - Ford Powerstroke Diesel Forum
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Old 06-26-2013, 08:44 PM
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Dual Mass Fly Wheel

Hello,

I'm looking at a 2001 7.3 manual with 150k miles, I'm thinking about pulling the trigger but it has a vibration/rattle sounds exactly like a torque converter problem, only happens in 1st or reverse at low rpm.

Is this an issue or is some noise expected for the manual trucks?

Doing some reading it sounds like this is likely the dual mass fly wheel, my main question is how much would it cost to replace this, parts and labour? Should I replace the clutch at the same time? It feels good other wise.

Any input would be awesome.
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Old 06-26-2013, 08:53 PM
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well its not the dual mass flywheel because ford didn't use them after 99. the dual mass flywheel was a problem on 1st gen 7.3's
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Old 06-26-2013, 10:38 PM
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I bet if you lug 2nd gear down to 600-750rpm you'll hear the noise too.

The Zf6 is well known for gear roll over noise. A slightly thicker blend created by somebody named Tobybia ( I believe ) is about 3/4 synthetic ATF and 1/4 0w40 engine oil and an anti wear additive will apparently help quiet it down.
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