Tranny Growl? - Ford Powerstroke Diesel Forum
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post #1 of 10 Old 05-08-2007, 12:23 PM Thread Starter
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Tranny Growl?

99 F250 7.3L
at idle, growling seems to come from flywheel area & when you raise RPMs to 900-1000 the growl goes away--this doesn't affect performance whatsoever. found another 2 99s, a 2000, and a 1998 Powerstroke doing the same thing. one lady told me it was the flywheel/flex plate, mine is in the shop right now and they say the flex plate looks fine-and heck, it does look fine. any ideas?
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post #2 of 10 Old 05-08-2007, 12:30 PM
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torque converter is coming apart inside, maybe not enough to cause problems , but its worn inside enough growl at idle and when you raise rpms it sort of balances out , seen this many times

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post #3 of 10 Old 05-08-2007, 01:41 PM Thread Starter
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thanks again for info on tranny growl

just got back from shop-flex plate looks good. re-stabbed tranny and still makes growl. read your reply and went to listen, now with truck up on rack it's easier to pinpoint the growl. thanks for the info. now to tackle the torque converter..................
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post #4 of 10 Old 05-08-2007, 05:58 PM
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make sure you service trans good ,that will take care of your noise

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post #5 of 10 Old 05-08-2007, 07:41 PM
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Trans problems

How many miles on the trans?

Thanks, David McLain
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www.etdrag.com david@etdrag.com
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post #6 of 10 Old 05-15-2007, 01:26 PM Thread Starter
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130,358 on truck/trans..............still runs great..........
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post #7 of 10 Old 06-04-2007, 04:51 PM
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My truck does the same

99-3-5 - Noisy T/C*
I came across this post at TheDieselStop.com, I think thats just how some of them came...


Problem - Some 1999 F-series with the 4R100 transmission may exhibit a rattle/scraping noise in the converter housing area of the transmission case.

Action - To diagnose, place gear selector in park and using a break out box, ground pin 54 (TCC). This will fully apply the torque converter clutch. Cycle the torque converter clutch on and off a few times by applying and removing the ground to pin 54. If the rattle/scraping noise is not present when the converter clutch is applied (pin 54 grounded), replace torque converter.

Affected Vehicles - 1999 F-Series Super Duty, 7.3 DIT, 4R100 and 1998-1999 E-Series built after 1/5/98. Some 1999 F-series 250HD/350/450/550 Super Duty and 1998/1999 Econoline Series (built after 1/5/98) and equipped with 7.3l diesel

Parts - Updated Converter: XL3Z-7902-DARM

MBRP 4" Turbo back Exhaust
AFE Stage 2 Intake


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post #8 of 10 Old 06-05-2007, 07:37 AM
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Hi Rick,I put a new TC in my 99 about 3 months ago and it took the growl away ,it's like driving a new truck,had mine done for 500.00 bucks
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post #9 of 10 Old 04-13-2013, 10:50 AM
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Hey Rick,

Justw anted to let you know i put a new TC on and the noise went right away. The old TC ran fine all these years but got some money and got rid of that dam noise.

Have a good one
D

MBRP 4" Turbo back Exhaust
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post #10 of 10 Old 05-08-2013, 05:32 AM
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Another point to mention, is that if your transmission has 130k miles on it and you don't flush it regularly or at every 30,000 mile interval, do not flush it or service it, it will not help your transmission. It will hurt it.



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