99 & up 7.3L Power Stroke Engine and DrivetrainDiscussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.
Just got back from a Christmas trip and pulled my 14' flatbed. I noticed that when pulling it and after, I have a grinding feel when I turn. I think its something to do with the friction modifier but taking input.
Thanks and happy new year to everyone
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2001 F350 7.3 4x4 CC SRW/ Aeroforce Interceptor/ BD Thruster II/ Bellowed Up-Pipes/ 4" turbo back straight exhaust / CCV Mod /DIY 6637/ TS chip reburned with PHP tunes (Stock, 40 Tow WITH Whsiper tune, 80 Daily Driver, 100 Race, 140 Extreme, 140 smoke show)//Recon smoked cab lights/MM Hubs/Hood/HPx/FRx/GPR switch-Indicator
First vehicle (still driving): 96 F250 XLT 2x4- All factory (injectors & turbo) except straight exhaust. 570k miles
Could be the modifier, could also be a differential carrier bearing or rear wheel bearing. At any rate sounds like time for an inspection and fluid service change. Or, you could do it the cheap way and just add 2 oz of modifier at a time and see if that clears it up.
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2002 F250 7.3L PSD, bought new now at 202K miles, 4R100 Auto, Crew Cab, Short Bed, ITP Regulated Fuel Return system, ITP head to head SS oil cross over, Hutch in tank mod
Harpoon de tank vent, DIESELSITE Dahl 100 Pre-Pump Fuel Filter, DIESELSITE Return Fuel Line Cooler, DIESELSITE Engine Coolant Filter, DIESELSITE Auxilliary Transmission Cooler, DIESELSITE Gage Package, Pyro, Trans & Boost, Extreme Diesel AD injectors, Ford AIS Air Filter System, BTM straight through muffler, Moog Ball Joints, Rancho Shocks, Rotella ELC Coolant ,Stock Engine Program
Modified for I-Pod Connection
We b playing Scotland The Brave to Jimmy Hendrix
Could be the modifier, could also be a differential carrier bearing or rear wheel bearing. At any rate sounds like time for an inspection and fluid service change. Or, you could do it the cheap way and just add 2 oz of modifier at a time and see if that clears it up.
Thanks Oneof6. I think I'll try adding the friction modifier little at a time, after the ground dries up.
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2001 F350 7.3 4x4 CC SRW/ Aeroforce Interceptor/ BD Thruster II/ Bellowed Up-Pipes/ 4" turbo back straight exhaust / CCV Mod /DIY 6637/ TS chip reburned with PHP tunes (Stock, 40 Tow WITH Whsiper tune, 80 Daily Driver, 100 Race, 140 Extreme, 140 smoke show)//Recon smoked cab lights/MM Hubs/Hood/HPx/FRx/GPR switch-Indicator
First vehicle (still driving): 96 F250 XLT 2x4- All factory (injectors & turbo) except straight exhaust. 570k miles
Think I found the problem. Went to go meet my wife at the end of the flooded roads, went to go lock my hubs in....THEY WERE ALREADY LOCKED!! And have been for about 2500 miles. I consider myself luck to still have a functioning transfer case. I drove at some points 80-95mph.
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2001 F350 7.3 4x4 CC SRW/ Aeroforce Interceptor/ BD Thruster II/ Bellowed Up-Pipes/ 4" turbo back straight exhaust / CCV Mod /DIY 6637/ TS chip reburned with PHP tunes (Stock, 40 Tow WITH Whsiper tune, 80 Daily Driver, 100 Race, 140 Extreme, 140 smoke show)//Recon smoked cab lights/MM Hubs/Hood/HPx/FRx/GPR switch-Indicator
First vehicle (still driving): 96 F250 XLT 2x4- All factory (injectors & turbo) except straight exhaust. 570k miles
So you unlocked it and it went away? Guess im missing how the hubs being locked is going to hurt anything. Your transfer case was in 2wd, no?
Yes, didn't notice it after unlocking. The transfer case was not built for high highway speeds. Locking the hubs locks the wheel to the axles, which is tied into the front drive shaft. Only thing switch the truck from 2wd to 4wd is to connect to drive line from the transmission to the transfer case.
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2001 F350 7.3 4x4 CC SRW/ Aeroforce Interceptor/ BD Thruster II/ Bellowed Up-Pipes/ 4" turbo back straight exhaust / CCV Mod /DIY 6637/ TS chip reburned with PHP tunes (Stock, 40 Tow WITH Whsiper tune, 80 Daily Driver, 100 Race, 140 Extreme, 140 smoke show)//Recon smoked cab lights/MM Hubs/Hood/HPx/FRx/GPR switch-Indicator
First vehicle (still driving): 96 F250 XLT 2x4- All factory (injectors & turbo) except straight exhaust. 570k miles
Mine have been locked since it started snowing a lot two weeks ago and i drive 65-70 most of the 60 miles to work. I think I would check all the u joints good.
Mine have been locked since it started snowing a lot two weeks ago and i drive 65-70 most of the 60 miles to work. I think I would check all the u joints good.
It can be done on day to day basis. Just more wear on everything. I know a guy that drove 100mph with his hubs locked in and exploded his transfer case.
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2001 F350 7.3 4x4 CC SRW/ Aeroforce Interceptor/ BD Thruster II/ Bellowed Up-Pipes/ 4" turbo back straight exhaust / CCV Mod /DIY 6637/ TS chip reburned with PHP tunes (Stock, 40 Tow WITH Whsiper tune, 80 Daily Driver, 100 Race, 140 Extreme, 140 smoke show)//Recon smoked cab lights/MM Hubs/Hood/HPx/FRx/GPR switch-Indicator
First vehicle (still driving): 96 F250 XLT 2x4- All factory (injectors & turbo) except straight exhaust. 570k miles
It can be done on day to day basis. Just more wear on everything. I know a guy that drove 100mph with his hubs locked in and exploded his transfer case.
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i think ill be unlocking mine(still icy in omaha)until we get more snow
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2002 f250 lariat 7.3 220k(motor has 190k)
original 4r100 tranny....220k and counting
knock on wood....
red elc good for 150k
4r100 1-2 2-3 3-4sonnax accumulator valves,.427 sonnax line pressure mod valve
4.125"yes thats 4 1/8" diy tymar intake(size matters...lol)
AIH delete,ccv delete,zoodad mod,
4" exhaust no muff
built my own leafs for 4.0 of lift!!!!!!
18" xd bronze revolvers with 325 nittos to wrap them
isspro pyro and boost guages on pillar mount....
Would you describe this noise/vibration? I'm having a similar issue on taking off from a stop and turning, and I'm also thinking it was in the final drive. But I'm also experiencing a rumbling vibration, similar to running over road-side warning rumbles, but only on throttle-off. AND I'm noticing a decrease in fuel economy.
Any easy way to test this short of putting it on a lift? Getting damn cold outside too.
Would you describe this noise/vibration? I'm having a similar issue on taking off from a stop and turning, and I'm also thinking it was in the final drive. But I'm also experiencing a rumbling vibration, similar to running over road-side warning rumbles, but only on throttle-off. AND I'm noticing a decrease in fuel economy.
Any easy way to test this short of putting it on a lift? Getting damn cold outside too.
GA
Hold the brakes and put the truck from drive to reverse. If you feel a **clunk** its probably the ujoints. Try locking and removing your front hubs, if you have a 4x4. Check for play in the center axle bearing...I've heard it called swing bearing, hanger bearing, and carrier bearing. You can also pull the plug on the differential and see if it has any metal shavings on it. You can also jack the tires up and see if they wiggle.
My is kinda lick you described, running on the edge of the road....slowly as I was turning.
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2001 F350 7.3 4x4 CC SRW/ Aeroforce Interceptor/ BD Thruster II/ Bellowed Up-Pipes/ 4" turbo back straight exhaust / CCV Mod /DIY 6637/ TS chip reburned with PHP tunes (Stock, 40 Tow WITH Whsiper tune, 80 Daily Driver, 100 Race, 140 Extreme, 140 smoke show)//Recon smoked cab lights/MM Hubs/Hood/HPx/FRx/GPR switch-Indicator
First vehicle (still driving): 96 F250 XLT 2x4- All factory (injectors & turbo) except straight exhaust. 570k miles
I know a guy that had his hubs locked for over a year. He did not know it. I noticed the u-joints spinning and told him. He said it had been a year since he used 4wd. Just more drag probably.
Pulled the locks off today and they seem fine: they lock when manually locked and spin free when not. Is it safe to run with the locks off for a short test run (5-10 miles?) to verify these are not the issue? - GA
Pulled the locks off today and they seem fine: they lock when manually locked and spin free when not. Is it safe to run with the locks off for a short test run (5-10 miles?) to verify these are not the issue? - GA
Yes
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__________________
2001 F350 7.3 4x4 CC SRW/ Aeroforce Interceptor/ BD Thruster II/ Bellowed Up-Pipes/ 4" turbo back straight exhaust / CCV Mod /DIY 6637/ TS chip reburned with PHP tunes (Stock, 40 Tow WITH Whsiper tune, 80 Daily Driver, 100 Race, 140 Extreme, 140 smoke show)//Recon smoked cab lights/MM Hubs/Hood/HPx/FRx/GPR switch-Indicator
First vehicle (still driving): 96 F250 XLT 2x4- All factory (injectors & turbo) except straight exhaust. 570k miles
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