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1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

Whining noise????

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Old Jan 20, 2024 | 07:37 PM
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Whining noise????

Loud whining noise when coast in any gear in my 49 F1. Similar to noise you hear when you down shift. Being told its a tranny problem. Before I pull it Could it be a differential problem? Low oil or bad gear?
 
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Old Jan 20, 2024 | 07:51 PM
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Could be. Which transmission do you have? Non-synchro trannies make more noise normally than helical gear boxes. Does the noise sound like it's coming from the floor, or behind?
 
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Old Jan 20, 2024 | 08:06 PM
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Not sure what type tranny it is. The noise seems like its coming from the floor and not the rear.
 
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Old Jan 20, 2024 | 09:05 PM
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How many forward speeds?
 
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Old Jan 20, 2024 | 09:12 PM
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3 speed on the floor
 
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Old Jan 20, 2024 | 09:39 PM
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Both light duty and heavy duty 3 speeds were floor shift in '49. Either way, you should not be hearing unusually loud noises from the transmission. You may have an issue.
 
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Old Jan 21, 2024 | 03:11 AM
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Ya. Thats what im thinking. Im gonna drain and replace oil in differential first before I pull tranny.
 
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Old Jan 21, 2024 | 04:17 PM
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Bob,years ago I had a whin in my truck and pulled the transmission and nothing was found wrong.Come to find out it was the rear end.An old mechanic said he put some shims in it to quieten it up.It did help but still has a light whin and been doing it for 40 years! Russ
 
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Old Jan 21, 2024 | 04:22 PM
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Thats what im afraid of. I dont want to pull the tranny just to find out nothing is wrong with it. Was the noise you had similar to what you hear when you downshift and coast after letting up on the clutch? Thats what Im hearing and its quite loud.
 
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Old Jan 21, 2024 | 04:35 PM
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No,mine was not really all that load.Does it change a lot when you let off on the throttle?
 
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Old Jan 21, 2024 | 04:39 PM
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It doesn’t make any noise when i step on the gas. Only when coasting.
 
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Old Jan 21, 2024 | 04:56 PM
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I would take a look at the u-joints.
 
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Old Jan 21, 2024 | 05:05 PM
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K. Will do. Thanks
 
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Old Jan 21, 2024 | 11:31 PM
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When you say coasting in gear are you.meaning deaccelerating with the clutch out and in gear? Or do you mean the trans is in gear and the clutch is depressed? And you say there is no noise when accelerating in gear, what about when maintaining a speed in gear? If I'm understanding you correctly I say it is a diff issue. I and I'm sure others need a little more clarification to help diagnose the issue.
 
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Old Jan 22, 2024 | 02:42 AM
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its in gear and clutch is not depressed. Im coasting. I get the noise. If i put it in neutral and and clutch not depressed and coast no noise. If I put it in any gear with clutch depressed and coast no noise.
 
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