driveline whine, dealer cant fix

[Tone]

Sounds like the transfer case... had mine replaced several times for this noise. If you install a TOD disconnect switch, it makes it very clear it is the tcase and not the rear end.

[PeteVX]

Tone,
I forgot to mention they allready put a new transfer case in the last time it was in, it didnt help, now they've ordered up a new front differential, should be in this week but i'm not real optomistic.

They also tried some other stuff and left me with a clunk in the driveline now every time i come to a stop.

I think if the front diff doesnt work they talked about replacing the transmission as thats about all thats left.

Pete

[thebear54]

Here's a thought Pete.....
Have them check the alignment of the drive shafts and U-joints. If the shafts are warped or U-joints are bad you will get whineing noise also.
If they are both true and straight then the transfer case is the culprit,even though they have changed it one doesn't mean that the replacement is any good.
Good luck......John

[thedutchguy]

since it's rear wheel drive, my best guess it's your rear pignon bearing .

[PeteVX]

John, i'll pass that along thanx, i guess a duff transfer case even though its new is possible, they were quite sure that that was the cause before.

I dont think its the pinion bearings as they were replaced with the new final drive assembly.

[yal^]

Your VX is not lifted, is it?

[Tone]

Have they tried disconnecting the TOD to see if the noise goes away? How about running with one drive shaft or the other removed? Oh nevermind, this is an Isuzu dealer - they'll do it the long, expensive way....