Question about 2004 Ford F150
My 2004 f-150 supercab 4wd, 83,000 miles, has started to shudder when you turn left or right from a dead stop, if you go straight it does not do it. It feels like it is in rear end but probably isn't. The transmission fluid is upossed to be a lifetime fluid but I don't know about that. Do you think a fluid/ filter change would work or can you not replace that transmission fluid? Is it the torque converter - I had heard Fords have tranny problems around 80-90 k in miles
I Am a Mechanic I have mainly worked on diesel for the last 12 years I have a 2004 F-150 FX4 EXT CAB TOW PACKAGE 5,4 4X4 WITH 9.75 rear end. I had the same problem I drained my rear end and put motorcraft and the limited slip addative I got from the ford dealer here in town. SAME PROBLEM. I drained the rear end again. put in amsoil and 2 "I said 2BOTTLES OF LIMITED SLIP ADDITIVE." that was almost 1 yrs ago I havnt had any problems since and I spend about 3/4 of the time pulling a trailer.
Posted on Feb 17, 2010
Mine was the same.It needs additive in the rear end. I put 2 bottles in mine and droveit. The vibration went away within a few days and have had no problems since. That was a year and a half ago and 80 000 km ago
Posted on Apr 23, 2009
I have a 2004 F150 2 wheel drive with 38,000 miles I have the same troubles with ours making the strong scrubbing noise from stop and only when turn left or right, pulled rear differential out found that it is caused by a soft bolt that ford puts in the spider gears it breaks and then creates extreme wear on gears and eventually ruins the rear end. Got no help from ford at all and they know about this situation and will not do anything about it. Guess its gonna take a class action to make them recall the dern thing. Oh by the way hold on to you wallet ford wants $1600. for the parts only search around for aftermarket like I did they hold up better and only cost $500.
Posted on Nov 06, 2009
Some fix this problem by adding a friction modifier to the differential fluid in the rear end. If the fluid is changed and the mechanic does not add the modifier this will happenn. You can buy friction modifier at most auto stores, find the square plug in you differential in the rear end, this is the plate with 9 or 12 bolts between the 2 rear tires in the middle. Find the plug on tne differential and put a socket wrench on it with no socket, turn it lose and add the friction modifier, it may take a few days to work. For some this will not fix the problem and you need new clutch packs which are expensive to have replaced.
Posted on Jan 05, 2013
The driveshaft would not give you a shudder from turning. It is possible to replace the sealed U joints with ones that have grease fittings.
This is certainly a front end problem. Without being there though, my best guess would be that you are having a problem with your ball joints.
Posted on Feb 13, 2009
I have a 98 ford e150 4wd with a bad noise in the rear diff under load and coast no load noise fades away to near zero noise has been getting worse over last 2 months checked rear diff brgs where fine axle shats bad so replaced axles, brgs and seals but didnt help as i expected it wouldnt this is a limited slip diff ring and pinion fine diff and pinion brgs appear fine and tight pattern on ring and pin appears perfect no metal or exesive wear anywhere has what i would consider normal amount of metal filings in diff considering axles where flaked and axle brgs where out flushed diff and added mobel synth lube per factory specs problem appears to be getting worse
Posted on Jan 06, 2011
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