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It seems I have developed a nasty squealing sound when pulling away...
First conclusion everyone jumps to is that it is belts... it's really really not....
We've done all sorts - the noise seems to be coming from the rear of the car. The head was just replaced and all the belts tightened accordingly but the squealing started just before the replacement. It only seems to happen when pulling away hard from a standstill. It is a rotational sound which sounds a little like one of the seal guards on the prop shaft rubbing under extreme load but i can't see any evidence. While I was on doing the head replacement I replaced the oils in the engine, rear diff, transmission and transfer case with the correct ones, and there are no leaks, so it doesn't seem to be that.
One thing I have noticed is that there seems to be a large clunk when changing from R to D on the auto box - which with a handy friend was able to distinguish was the prop shaft rotating against the rear diff. Any ideas what the noise could be - I am now reluctant to drive it anywhere but it does seem to drive fine....
The only way I can recreate the issue other than driving away (which makes it difficult to establish exactly WHERE it is coming from) is to put the brakes full on in drive, accelerate and bounce the truck along - although the noise doesn't match the bumping, mroe the rotation of the prop/diff/rear axle.
Any sensible advice much appreciated - anyne heard this before?... any less helpful advice most likely to be met with something humourous though - at least make them funny..... LOL
First conclusion everyone jumps to is that it is belts... it's really really not....
We've done all sorts - the noise seems to be coming from the rear of the car. The head was just replaced and all the belts tightened accordingly but the squealing started just before the replacement. It only seems to happen when pulling away hard from a standstill. It is a rotational sound which sounds a little like one of the seal guards on the prop shaft rubbing under extreme load but i can't see any evidence. While I was on doing the head replacement I replaced the oils in the engine, rear diff, transmission and transfer case with the correct ones, and there are no leaks, so it doesn't seem to be that.
One thing I have noticed is that there seems to be a large clunk when changing from R to D on the auto box - which with a handy friend was able to distinguish was the prop shaft rotating against the rear diff. Any ideas what the noise could be - I am now reluctant to drive it anywhere but it does seem to drive fine....
The only way I can recreate the issue other than driving away (which makes it difficult to establish exactly WHERE it is coming from) is to put the brakes full on in drive, accelerate and bounce the truck along - although the noise doesn't match the bumping, mroe the rotation of the prop/diff/rear axle.
Any sensible advice much appreciated - anyne heard this before?... any less helpful advice most likely to be met with something humourous though - at least make them funny..... LOL
I was considering doing the UJs as my next thing anyway (see below)
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