What kind of noises to bad diffs make?
#1
![Default](https://passionford.com/forum/images/icons/icon1.gif)
Not been exposed to a car that's had a dodgy diff so I wondered what the symptoms were? (4x4 saph)
The car is driving great and properly fast so I'm happy, but last night I noticed when slowing down that there's a droaning kind of noise coming from somewhere, it seems to be a lot more prevelant when off throttle but the exhaust note is very loud inside the car when driving so I cannot say for sure it's not there all the time.
I've had wheel bearings go out on me before and checked these very recently, it doesn't sound like a wheel bearing type of noise. Loving the T4 power but it's definately testing the rest of the car!
The car is driving great and properly fast so I'm happy, but last night I noticed when slowing down that there's a droaning kind of noise coming from somewhere, it seems to be a lot more prevelant when off throttle but the exhaust note is very loud inside the car when driving so I cannot say for sure it's not there all the time.
I've had wheel bearings go out on me before and checked these very recently, it doesn't sound like a wheel bearing type of noise. Loving the T4 power but it's definately testing the rest of the car!
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
#2
Zee Germans are coming
![Default](https://passionford.com/forum/images/icons/icon1.gif)
i had a knocking noise from the rear diff but only when pulling off
planet gears i was told
check the oil and levels in them
are you sure the prop went back on in the same position when the box was changed
planet gears i was told
check the oil and levels in them
are you sure the prop went back on in the same position when the box was changed
#4
Don't mention ze Vor
iTrader: (1)
Join Date: Feb 2006
Location: Germany
Posts: 2,596
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://passionford.com/forum/images/icons/icon1.gif)
Worn bearings in the diff usually make a whining or grinding noise.
Or if the gears are slightly worn, you'll get a bit of play, making the car feel jerky if you let off or step on the throttle.
Does the car vibrate like it's on badly balanced wheels?
When you say 'droaning' noise, are you sure it's not just the exhaust catching somewhere?
Or if the gears are slightly worn, you'll get a bit of play, making the car feel jerky if you let off or step on the throttle.
Does the car vibrate like it's on badly balanced wheels?
When you say 'droaning' noise, are you sure it's not just the exhaust catching somewhere?
#6
10K+ Poster!!
![](https://passionford.com/forum/images/pf_gold_member.png)
iTrader: (9)
Join Date: May 2004
Location: birmingham west mids
Posts: 11,919
Likes: 0
Received 11 Likes
on
9 Posts
![Default](https://passionford.com/forum/images/icons/icon1.gif)
If it is fucked, put a 2wd diff back in with the bigger shafts as well, all bolts in easy peasy, you just have to take a small bit off one of the 7.5" diff mounts to fit into the 4x4 beam.
#7
Don't mention ze Vor
iTrader: (1)
Join Date: Feb 2006
Location: Germany
Posts: 2,596
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://passionford.com/forum/images/icons/icon1.gif)
I fail to remember the english name for it but theres a rubber plate between gearbox and propshaft. If its fubarred you will get all kinds of vibrations. Had it on a mk3 granny once and he whole car.was shaking. Only got better when you floored it.
Trending Topics
#9
![Default](https://passionford.com/forum/images/icons/icon1.gif)
Yes it's all good, it's the guibo joint you're talking about, both that and the centre bearing are new. ![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
Thought about the 7.5" diff, think it's probably a worthwhile addition, but I think I'll break it again by next week as I'm about to have more boost!
The only thing I have never touched in this car in 12 years is the rear diff, last week the box was changed for a 2nd hand standard one which seems nice, it's predecessor was brand new from Ford and only lasted 4k miles, it always drove like crap and seems a pig to get into gear.
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
Thought about the 7.5" diff, think it's probably a worthwhile addition, but I think I'll break it again by next week as I'm about to have more boost!
![Clap](https://passionford.com/forum/images/smilies/9c-clap.gif)
#10
10K+ Poster!!
![](https://passionford.com/forum/images/pf_gold_member.png)
iTrader: (9)
Join Date: May 2004
Location: birmingham west mids
Posts: 11,919
Likes: 0
Received 11 Likes
on
9 Posts
![Default](https://passionford.com/forum/images/icons/icon1.gif)
The 2wd diff will be much stronger, don't forget it is only seeing 66% of the power in a 4x4. I would highly reccomend a front diff steel sandwich plate as well, cheap & easy upgrade for mucho strength.
#11
big floppy donkey dick
Join Date: May 2003
Location: Rouse Sport heaven ;)
Posts: 4,514
Likes: 0
Received 3 Likes
on
3 Posts
![Default](https://passionford.com/forum/images/icons/icon1.gif)
***What kind of noises to bad diffs make?***
RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRrrrrrrrrrrrrrrrrrr rrrreeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeekkkkkk kkkkkkkkkkkkkkkkkk clunk clunk ssssssssssssssssccccccccccccccccccccceeeeeeeeeeerr rrrrrrrrrrrrrrrrrrrrrrrreeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeccccccccccc ccccccchhhhhhhhhhhhhhhhhhhhhhhhhh chunk clumk weeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee crunch eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeekkkk
or similar
RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRrrrrrrrrrrrrrrrrrr rrrreeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeekkkkkk kkkkkkkkkkkkkkkkkk clunk clunk ssssssssssssssssccccccccccccccccccccceeeeeeeeeeerr rrrrrrrrrrrrrrrrrrrrrrrreeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeccccccccccc ccccccchhhhhhhhhhhhhhhhhhhhhhhhhh chunk clumk weeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee crunch eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeekkkk
or similar
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
#12
![Default](https://passionford.com/forum/images/icons/icon1.gif)
***What kind of noises to bad diffs make?***
RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRrrrrrrrrrrrrrrrrrr rrrreeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeekkkkkk kkkkkkkkkkkkkkkkkk clunk clunk ssssssssssssssssccccccccccccccccccccceeeeeeeeeeerr rrrrrrrrrrrrrrrrrrrrrrrreeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeccccccccccc ccccccchhhhhhhhhhhhhhhhhhhhhhhhhh chunk clumk weeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee crunch eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeekkkk
or similar![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRrrrrrrrrrrrrrrrrrr rrrreeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeekkkkkk kkkkkkkkkkkkkkkkkk clunk clunk ssssssssssssssssccccccccccccccccccccceeeeeeeeeeerr rrrrrrrrrrrrrrrrrrrrrrrreeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeccccccccccc ccccccchhhhhhhhhhhhhhhhhhhhhhhhhh chunk clumk weeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee crunch eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeekkkk
or similar
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
#13
![Default](https://passionford.com/forum/images/icons/icon1.gif)
I'm convinced the diff is fucked, it doesn't clunk or make a racket like that, only a droaning noise, and that stupid exhaust noise i get that I can't figure out.
Whatever it is, i will break it by next week when i add more boost, then I'll know what the cause was.
![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
#14
I've found that life I needed.. It's HERE!!
![Default](https://passionford.com/forum/images/icons/icon1.gif)
RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRrrrrrrrrrrrrrrrrrr rrrreeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeekkkkkk kkkkkkkkkkkkkkkkkk clunk clunk ssssssssssssssssccccccccccccccccccccceeeeeeeeeeerr rrrrrrrrrrrrrrrrrrrrrrrreeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeccccccccccc ccccccchhhhhhhhhhhhhhhhhhhhhhhhhh chunk clumk weeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee crunch eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeekkkk
I think you will find that there should be 5 k's at the end
I think you will find that there should be 5 k's at the end
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
#15
PassionFord Post Whore!!
![Default](https://passionford.com/forum/images/icons/icon1.gif)
***What kind of noises to bad diffs make?***
RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRrrrrrrrrrrrrrrrrrr rrrreeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeekkkkkk kkkkkkkkkkkkkkkkkk clunk clunk ssssssssssssssssccccccccccccccccccccceeeeeeeeeeerr rrrrrrrrrrrrrrrrrrrrrrrreeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeccccccccccc ccccccchhhhhhhhhhhhhhhhhhhhhhhhhh chunk clumk weeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee crunch eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeekkkk
or similar![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRrrrrrrrrrrrrrrrrrr rrrreeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeekkkkkk kkkkkkkkkkkkkkkkkk clunk clunk ssssssssssssssssccccccccccccccccccccceeeeeeeeeeerr rrrrrrrrrrrrrrrrrrrrrrrreeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeccccccccccc ccccccchhhhhhhhhhhhhhhhhhhhhhhhhh chunk clumk weeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee crunch eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeekkkk
or similar
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
#18
PassionFord Post Whore!!
Join Date: Jan 2006
Location: fife,scotland
Posts: 3,713
Likes: 0
Received 0 Likes
on
0 Posts
Thread
Thread Starter
Forum
Replies
Last Post
Rstar_man
Restorations, Rebuilds & Projects.
143
20-07-2020 11:16 PM
track.focus'd
Restorations, Rebuilds & Projects.
26
12-08-2015 05:53 PM