Help diagnosing loud trany noise - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 9 (permalink) Old 05-31-2014, 02:19 AM Thread Starter
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Help diagnosing loud trany noise

2004 F250. When slowing to a stop at about 25 mph I hear a whine, gear grind sound followed by a loud bang. I would compare the noise to that of a transmission having trouble engaging or disengaging into 4 wheel drive. The noise is intermittent and only happens after about 20 minutes of driving. I verified front hubs are not locked and front drive line is free turning. I pulled the trany pan, fluid looks and smells normal. No metal shavings. I wonder/hope it's a module going out. What do you guys think?

Last edited by Gareth; 05-31-2014 at 02:21 AM. Reason: Misspelling
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post #2 of 9 (permalink) Old 05-31-2014, 12:38 PM
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Re: Help diagnosing loud trany noise

What engine? That will tell us what transmission you have.

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post #3 of 9 (permalink) Old 05-31-2014, 02:34 PM Thread Starter
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Re: Help diagnosing loud trany noise

6.0 engine. I believe the transmission is a 5R110 torque shift.
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post #4 of 9 (permalink) Old 05-31-2014, 05:35 PM
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Re: Help diagnosing loud trany noise

Yes, that would be the TorqShift.

I can't think of anything that could make a noise like that. Your best bet may be to take it to a professional that can drive it and give you their opinion. A chain transmission shop like AAMCO doesn't employ professionals, just people that are trained to always tell you that it needs a rebuild.

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post #5 of 9 (permalink) Old 05-31-2014, 10:43 PM
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Re: Help diagnosing loud trany noise

does this only happen when using the brakes while slowing ?

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post #6 of 9 (permalink) Old 05-31-2014, 11:53 PM
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Re: Help diagnosing loud trany noise

I'd lift it up and see if you have a brake caliper sticking


1997 F350 SRW CCLB 7.3 ZF5 4x4
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post #7 of 9 (permalink) Old 06-01-2014, 12:28 AM Thread Starter
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Re: Help diagnosing loud trany noise

Brakes are good. Problem is very intermittent. It has happened only a few times over the past 100 miles or so driving around town. Starts with a whine while coasting then mild gear grinding sound then loud bang. Then drives away fine.
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post #8 of 9 (permalink) Old 06-08-2014, 10:25 PM Thread Starter
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Re: Help diagnosing loud trany noise

Could it be possible that the truck is occasionally trying to go into 4 wheel drive even with the esof switch on 2 wheel drive?
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post #9 of 9 (permalink) Old 09-13-2014, 03:58 AM
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Re: Help diagnosing loud trany noise

im having a similar issue except no whine/grinding except ive got a 7.3 4r100 4x4 excursion any help here???
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