While cruising like not stop and go down a highway after i get up to 40mph i hear this slight whistle or wine it sounds almost like a supercharger in a way. also when i left off the gas i hear a clunk and when i put on the gas i hear a clunk. Is this my driveshaft? i rebuilt it myself replacing the ujoints and the center bearing unless i messed up somewhere and its starting to fail again what could be happening?

followed this to guide to rebuild it: www.discovery2.co.uk / Workshop :- front and Rear propshaft

 

The gear driven T-cases do whine by nature, and the clunk in 4th gear could also be related to the transfer case. Since there is a decent amount of play in an all wheel drive transfer case, and the Discovery 2's transmissions 4th gear is overdriven, when you let off the gas, everything shifts, and boom there's your clunk, that's also why 4th gears coasting speed sucks, because its overdriven.


Although, I would check to make sure you have sufficient oil levels in the transfer case, as this could make your whine more apparent, and check the driveshaft(s) again, as extra resistance in a drivetrain component could case your clunk to be louder.

 

Thanks i was getting a little worried. whats the best way to check fluid levels or should i bother since next weekend I'm changing tcase and tranny fluids?

 

You can just pull the fill plug on flat ground, if nothing comes out, its not full, pretty straight forward! I would check it out if your not sure, its better safe than sorry, no doubt about that.


Its a really easy job, a good tip when refilling the t-case: if your using a hand pump, put the gear oil bottles in a hot sink, and it'll soften them up so you can fill it up easier!

 

Does then whine happen when the radio is off too? Just so you can eliminate the radio as the cause.

 

i haven't with the radio off but with it turned down i have and it still whistled

 

Practical joker in the neighborhood?

Robot Check

 

Just for kicks, try turning radio all the way off. It may not be related, but the whine on a radio can still happen with volume all the way down. The noise can be caused by an electrical filter not working correctly.Now that is funny!