help find the fault, whats the noise????????
#1
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sierra xr4x4, i get a knocking noise, from the rear at about 5mph to 25mph then i think its still there but engine noise and speed covers it up?
you can really fell it banging in the car! its coming from the rear?
changed to my 15"s yesterday to eleminate wheels/tyres etc then drove to work, great the noise has gone, but when i drove home it come back agian, it seemed to have got worse
now ive got the rear end jacked up theres no play in the wheels (bearings ) hand brake on or off,
so any suggestions?
you can really fell it banging in the car! its coming from the rear?
changed to my 15"s yesterday to eleminate wheels/tyres etc then drove to work, great the noise has gone, but when i drove home it come back agian, it seemed to have got worse
![Wall](https://passionford.com/forum/images/smilies/wall.gif)
now ive got the rear end jacked up theres no play in the wheels (bearings ) hand brake on or off,
so any suggestions?
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#8
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time to jack it up again? just dropped it back on the floor, and test drove, and quess what, no noise again
oh and by propshaft bolts are you talking about the ones that go through the rubber donnut? or something else i should be checking??
![Wall](https://passionford.com/forum/images/smilies/wall.gif)
![Wall](https://passionford.com/forum/images/smilies/wall.gif)
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oh and by propshaft bolts are you talking about the ones that go through the rubber donnut? or something else i should be checking??
#9
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Originally Posted by Fil
time to jack it up again? just dropped it back on the floor, and test drove, and quess what, no noise again
oh and by propshaft bolts are you talking about the ones that go through the rubber donnut? or something else i should be checking??
![Wall](https://passionford.com/forum/images/smilies/wall.gif)
![Wall](https://passionford.com/forum/images/smilies/wall.gif)
![Wall](https://passionford.com/forum/images/smilies/wall.gif)
![Wall](https://passionford.com/forum/images/smilies/wall.gif)
![Wall](https://passionford.com/forum/images/smilies/wall.gif)
oh and by propshaft bolts are you talking about the ones that go through the rubber donnut? or something else i should be checking??
#10
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Originally Posted by PF NICK
Originally Posted by Fil
time to jack it up again? just dropped it back on the floor, and test drove, and quess what, no noise again
oh and by propshaft bolts are you talking about the ones that go through the rubber donnut? or something else i should be checking??
![Wall](https://passionford.com/forum/images/smilies/wall.gif)
![Wall](https://passionford.com/forum/images/smilies/wall.gif)
![Wall](https://passionford.com/forum/images/smilies/wall.gif)
![Wall](https://passionford.com/forum/images/smilies/wall.gif)
![Wall](https://passionford.com/forum/images/smilies/wall.gif)
oh and by propshaft bolts are you talking about the ones that go through the rubber donnut? or something else i should be checking??
![Top](https://passionford.com/forum/images/smilies/smile011.gif)
#13
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Also check the driveshafts are tight, and check for play in the diff by trying to turn the driveshafts. Doesn't take much play at all to make a noise
#14
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cant fault it, looks like ill have to try a replacement diff, and go from there?
how much of a job is it to change a diff, thats probably been on the car 17years
how much of a job is it to change a diff, thats probably been on the car 17years
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
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Originally Posted by Fil
cant fault it, looks like ill have to try a replacement diff, and go from there?
how much of a job is it to change a diff, thats probably been on the car 17years![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
how much of a job is it to change a diff, thats probably been on the car 17years
![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)
#16
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Originally Posted by ^NUTTER^
Originally Posted by Fil
cant fault it, looks like ill have to try a replacement diff, and go from there?
how much of a job is it to change a diff, thats probably been on the car 17years![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
how much of a job is it to change a diff, thats probably been on the car 17years
![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)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
#18
ELASTIC BAND
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Originally Posted by SPADGE
Originally Posted by ^NUTTER^
Originally Posted by Fil
cant fault it, looks like ill have to try a replacement diff, and go from there?
how much of a job is it to change a diff, thats probably been on the car 17years![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
how much of a job is it to change a diff, thats probably been on the car 17years
![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)
![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)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
#20
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Originally Posted by Fil
Originally Posted by SPADGE
Originally Posted by ^NUTTER^
Originally Posted by Fil
cant fault it, looks like ill have to try a replacement diff, and go from there?
how much of a job is it to change a diff, thats probably been on the car 17years![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
how much of a job is it to change a diff, thats probably been on the car 17years
![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)
![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)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
Yes mate
![Big Grin](https://passionford.com/forum/images/smilies/icon_mrgreen.gif)
Have removed and replaced loads of diffs but on this one occasion it decided to fall out and landed on the side of my head
![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)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
#21
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Originally Posted by SPADGE
Originally Posted by Fil
Originally Posted by SPADGE
Originally Posted by ^NUTTER^
Originally Posted by Fil
cant fault it, looks like ill have to try a replacement diff, and go from there?
how much of a job is it to change a diff, thats probably been on the car 17years![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
how much of a job is it to change a diff, thats probably been on the car 17years
![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)
![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)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
Yes mate
![Big Grin](https://passionford.com/forum/images/smilies/icon_mrgreen.gif)
Have removed and replaced loads of diffs but on this one occasion it decided to fall out and landed on the side of my head
![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)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
simply put, ouch! hope theres no permenant damage
![Surprised](https://passionford.com/forum/images/smilies/shocked.gif)
#22
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Originally Posted by Fil
Originally Posted by SPADGE
Originally Posted by Fil
Originally Posted by SPADGE
Originally Posted by ^NUTTER^
Originally Posted by Fil
cant fault it, looks like ill have to try a replacement diff, and go from there?
how much of a job is it to change a diff, thats probably been on the car 17years![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
how much of a job is it to change a diff, thats probably been on the car 17years
![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)
![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)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
Yes mate
![Big Grin](https://passionford.com/forum/images/smilies/icon_mrgreen.gif)
Have removed and replaced loads of diffs but on this one occasion it decided to fall out and landed on the side of my head
![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)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
simply put, ouch! hope theres no permenant damage
![Surprised](https://passionford.com/forum/images/smilies/shocked.gif)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
No permanent damage to my stunning looks
![Big Grin](https://passionford.com/forum/images/smilies/icon_mrgreen.gif)
![Big Grin](https://passionford.com/forum/images/smilies/icon_mrgreen.gif)
![Top](https://passionford.com/forum/images/smilies/smile011.gif)
#23
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i had a similar problem on mine, nasty knocking noise when pulling away. turned out that theres a threaded section on the prop with a 36mm[iirc] nut wound onto it, it was only hand tight to i tightened it up and locktited it to be sure and it did the job.
i think it's just after the centre bearing.
i think it's just after the centre bearing.
#25
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hmm seems a previous owners mullered the allen key oil plug nut! doh, have got a seringe ready to try latter and get some oil in via the breather pipe
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
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