crew cab w/limited slip problems
Thread Starter
|
New User
Joined: Mar 2004
Posts: 1
Likes: 0
crew cab w/limited slip problems
I have a 1997 f250(light duty) w/9.75 limited slip rear differential. I just had it serviced and filled with 75/140 synthetic as noted on axle tag. It growels and chatters like crasy...sooo bad I don't want to drive it. Any suggestions will be greatly appreciated.
Bobby K
Bobby K
Freshman User
Joined: May 2003
Posts: 40
Likes: 0
From: Maryland
Did they add friction modifier? Was it serviced through Ford? If not, then go ahead and buy some "FORD" friction modifier and throw it in your differential. It will take some time for that crap to have an effect, but it just might help. My 97 was doing it like crazy. I changed out my differential fluid, added modifier (not ford) and no change at all. Went to Ford, bought theirs and dumped it in and it helped some. It still chatters but not as much.
Logistics Pro
Joined: Jul 2002
Posts: 4,821
Likes: 19
From: South Dakota
Originally Posted by jvangel
Did they add friction modifier? Was it serviced through Ford? If not, then go ahead and buy some "FORD" friction modifier and throw it in your differential. It will take some time for that crap to have an effect, but it just might help. My 97 was doing it like crazy. I changed out my differential fluid, added modifier (not ford) and no change at all. Went to Ford, bought theirs and dumped it in and it helped some. It still chatters but not as much.
Some thimes you have to watch the aftermarket friction modifer as it come in all kind of different qtys....most common ones I've seen are 4 oz and 8 oz bottles.
Senior User
Joined: Sep 2002
Posts: 207
Likes: 0
From: North Bay, ON
You didn't say if the diff growled and chattered BEFORE you serviced it. If it did, then you may have mechanical problems. If it didn't, then a friction modifier (Fords if probably best) in the recommended quantity should fix it.
Thom
Thom
Posting Guru
Joined: May 2002
Posts: 1,673
Likes: 0
From: Chicago Area
Did you have it changed because it was chattering, or did it start to chatter after it was changed?
If the latter, I would certainly suspect it needs friction modifier. But if you add too much, it will lose some of its limited slip ability.
If the latter, I would certainly suspect it needs friction modifier. But if you add too much, it will lose some of its limited slip ability.
