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| 1999 to 2003 7.3L Power Stroke Diesel 7.3L Power Stroke Diesel equipped Super Duty and Excursion. |
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#1
Tue, May 8th, 2012, 06:11 PM
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4R100 Horror stories
I have a bone stock tranny in my 2003 F250 and I read A LOT of horror stories about them. Does anyone have a stock transmission that hasn't blown up on them? Somebody reassure me please...
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2003 F250 Powerstroke 7.3 L, Edge Evo 15001, 6637 intake 
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#2
Tue, May 8th, 2012, 08:40 PM
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From what I've heard,02-03-04 transmissions were built out of stronger parts. The main failures come from a mixture of putting too much power through them and not paying attention to the temps with a real temp gauge. I want to say the torque converter was unchanged, but not sure. That is usually the first thing to go. Just be easy on the skinny pedal and get you a gauge to monitor the temperature if you haven't done so.
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01 F350 7.3 4x4 CC SRW/3.73/315-75-16/Aeroforce Interceptor/BD Thruster II/ Bellowed Up-Pipes/4" turbo back exhaust/CCV Mod/DIY 6637/FPR Shimmed to 65 PSI/TS chip reburned with PHP tunes (Stock, 40T WITH Whsiper tune, 80DD, 100R, 140Ex, 140SS)/Replaced and Cleaned EBPS & Tube 4-6-12/Zoodad mod/Recon smoked cab lights/MM Hubs/Cowl Hood/HPx
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#4
Tue, May 8th, 2012, 09:48 PM
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Thanks! I have a gauge and completely ignore the dummy light on a stick in the dashboard. I wish Ford didn't hamstring their own equipment with the "Cadillac" shifts...
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2003 F250 Powerstroke 7.3 L, Edge Evo 15001, 6637 intake
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#5
Thu, January 21st, 2021, 06:31 PM
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I have 534,000 on my 2002 dually, first thing I did after they came out was put a 6.0 trans cooler in. I haul a 20k 5th wheel and a 14k vending trailer. My first trans went out at 300,000 and that was my fault I was not changing the trans fluid enough. Smoked first gear did a bunch of damage on the inside purchased a after market trans. Would have been fine but I didn’t put a billet triple disk converter in that one lasted 100000 miles but it just couldn’t hold up to the heavy towing. So I just put in a new after market it cost me 5625.00 installed but this thing is built to haul. Very firm shifts so for normal driving I had to do some tuning adjustments. I can’t see this one going out as long as I keep up with fluid change. As for as motor is concerned haven’t had a lick of problems other than the normal bs. Like I said don’t make my mistake keep up with fluid changes and switch out to the 6.0 cooler
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#6
Thu, January 21st, 2021, 07:42 PM
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Hey, Mark.... Welcome to the forum!
 That's good information. People really don't put enough emphasis on just how important fluid changes really are. The 6.0 trans cooler, or any additional aftermarket cooler for that matter, makes a huge difference in the life expectancy of the transmission. Cool fluid is paramount to long service life of hard components as well as clutch life. Look forward to seeing you around the forums.  Take care.
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Bill Cohron - The Mad Doctor   Power Hungry Performance - The ORIGINAL in Ford performance tuning... Since 1997! (678) 890-1110 www.gopowerhungry.com - Home of the Hydra Chip, Minotaur Tuning Software, and the new Orion Reflash System for Navistar! Bring back  Windows™ XP and 7.  Windows™ Vista and Windows™ 8 is a pain in my a$$!  Windows™ 10 is only slightly less annoying! Windows™ 11 is garbage!  Much to my surprise, I'm actually quite enjoying Linux! 
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