BIG PROBLEM - Ford Powerstroke Diesel Forum

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post #1 of 11 Old 10-24-2008, 03:03 PM Thread Starter
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BIG PROBLEM

Well I was driving around yesterday and I hurd a popping noise coming from the rear end. I drove to work today and on my lunch I went to get into my truck. I put the clutch in and as the truck started to roll the driver side rear tire started popping like it was locked up or something. I took the tire off and my axle seal was leaking but it gets worse. When i spin the rear tires it seems like the diff is locking up. It makes a grinding popping kind of noise. I have a feeling something is torn up in my rear differential. The truck still drives but I'm not taking any chances. Anyone else have this experience?

2004 F-250 4x4 sc long bed
afe intake
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post #2 of 11 Old 10-24-2008, 03:04 PM
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drain your gear oil and look for metal particles or pieces..


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post #3 of 11 Old 10-24-2008, 03:09 PM
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i don't know if for started putting the limited slip diff 97 7.3 but if they did you could of had a band or a spring give way inside the diff. its super easy to pop the back cover off the diff. you should do what RWalker said, look at the oil and take the cover off and look at the ring and pinion gears. you'll if something doesn't look right.
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post #4 of 11 Old 10-24-2008, 03:38 PM
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Quote:
Originally Posted by jakdup250 View Post
i don't know if for started putting the limited slip diff 97 7.3 but if they did you could of had a band or a spring give way inside the diff. its super easy to pop the back cover off the diff. you should do what RWalker said, look at the oil and take the cover off and look at the ring and pinion gears. you'll if something doesn't look right.
Don't forget to inspect the spider gears they are usually the first part of the rear end to go out.

If any part of your internals in the rear end are bad. I strongly you suggest you get a tru-trac from detroit locker or something similar to that.


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post #5 of 11 Old 10-24-2008, 03:46 PM
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Very true a tru-trac from detroit locker is a damn good lock for the money plus there strong just a heads up detroit locks make a loud poping sound when they break away going around corners so don't be scared if that happens.
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post #6 of 11 Old 10-25-2008, 06:20 AM
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You also need to check the wheel bearings, they could starting to come apart and locking up the wheel. had it happen to me.

99 F350 4x4 dually
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post #7 of 11 Old 10-26-2008, 03:22 PM Thread Starter
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Quote:
Originally Posted by 460+ View Post
You also need to check the wheel bearings, they could starting to come apart and locking up the wheel. had it happen to me.
And that is the problem. I pulled the rear diff cover off and the gears were fine. The fluid was very dirty but it was a big relief. I took the axle shaft out on the driver side rear and spun the hub and its for sure the bearings.

2004 F-250 4x4 sc long bed
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mbrp exhaust
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post #8 of 11 Old 10-27-2008, 07:21 PM
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Originally Posted by jakdup250 View Post
i don't know if for started putting the limited slip diff 97 7.3
My 97 has a factory LSD rear.

97 F250 Crew Cab Short Bed 4x4 Auto XLT PSD
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post #9 of 11 Old 10-27-2008, 08:34 PM
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yeah now that i think about it ford might have started the limited slip diffs when they started the PowerStroke
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post #10 of 11 Old 10-28-2008, 05:29 AM
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All my trucks have LS rear ends, even back to '94. It is just an option back then. Now it is standard, I think.

Eli Benson - EMT, Ambulance Mechanic
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'08 F350 Dually KR - Spartan'd
'07 F250 CC SB 4x4 XLT - SCT /w Innovative Tunes
4 '09 & '10 E350 6.0l ambulances
1 '08 Duramax 6.6 (LMM) van ambulance
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