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 had my diff service 3 days ago now truck started making howling noise. I think its the rear not sure though. I asked the mechanic if this rear needs an additive he said "no". It only makes the noise when coasting. 2000 f250
If you had no noise before the oil change I would be making shore first there was oil in the diff and if so asking what type/grade.
Sounds like a lube break down on the least polished surface on the gears.Hope it doesnt grind = rebuild.
regards Ron
__________________
2000 F350 king cab 4x4,No engine mods,Roo Bar,Headlight and bonnet stone protectors,Inlet snorkel,flares on front,Engine driven air compressor and receiver,Hot water tap,tyre temp and pressure monitor,95 ltr fuel tank under right hand side,aluninium side steps,flat trayback,50ltr water tank under left hand side,heavy wired front and back for 4500lb electric winch, Bilnstien shocks,converted to right hand drive,battery conditioner,electric trailer brakes,heavy duty tow bar,synthetic oil in tranny,extra tranny coolerand filter ,tranny temp & pyro,
Ride-Rite airbags all round.Full flow muffler outlet at rear of vehicle.Engine breather mod.HHO generator
The diff fluid is replaced by removing the cover, cleaning the cover-to-diff mating surfaces, cleaing out the old fluid, replacing the cover using silicone as a gasket and replacing with fluid through the fill port until it come out.
The fluid should be 75-140 on a Ford 10.5, and an LS needs a friction modifier.
If the additive is not used, you will get chatter on turns - that's it. It is not bad for the diff, it is just annoying. If this happens, the additive can be added by the ounce until the problem goes away after doing some figure eights.
If there is no fluid, either the tech forgot to refill, or the gasket leaked all the fluid out. In either case, they are responsible.
I'd be intersted to hear how it turns out.
Thanks and good luck.
__________________ 99.5 F-250 CC LB 4x4 7.3 Red New Pics 1/5/10
Trail Boss Replacement Bumpers, Tool Box, Headache Rack, Full Length Running Boards, Bilstien Shocks, BFG AT/KO 285/75x16E, 2003 Cup Holder, Marinco Heater Plug, Weather Tech Rain Vents / Hood Guard, B&W GN Hitch, X-Springs, Rear 4" F350 Blocks, Hellwig front and rear sway bars, Timbrens, Duraflaps
they also replaced the pinion seal, but didnt replace the lock nut so it came loose, causing the noise. I would make sure to have whoever replaces thier seal put a new lock nut on as well. They also changed the oil again to the ford recommended oil and added the additive, because they could see I was'nt very happy. Lucky I was close to home when it came loose.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.
New Pics 1/5/10
Autoenginuity
Linear Mode
