Theres a loud clicking noise (over the engine) coming from the front while im in 4wd.. i just changed the oil in it and the old oil wasnt dirty.. i have locking hubs and it clicks with them locked and free.. also i have a leaking seal on the right side of the diff, would this have anything to do with it? i went under the truck and shook both cvs there is NO play in them.. with the hubs locked and i switch out of 4wd the noise goes away! also there is no noise going backwards.. of course i didnt go over 10 mph going backwards.. the noise starts when im going about 10-15 mph any thoughs? u joints? i have had the 33s and locking hubs on awhile before this started and have used 4wd with no noise. At first i thought it mit be dirt grinding around in the leaking oil.. but i cleaned it good with Brake Cleaner at work still a noise!

 

even though you have locking hubs you should still have ADD... my first thought is that your ADD isnt engauging all the way, thus clicking.

My rear end clicked when I chiped a tooth on the R&P.. have you been wheeling it hard. A shock can break gears even if you dont have lots of power applied...

 

no i havent been wheelin at all latey! usually it sees alot of action but i havent had the time latey.. the 4wd light comes on in the dash so it turns on i guess.. would it still be loose and the light come on?

 

u-joint ?? i would start there

 

ok ill check them tomorrow and run it by the techs at work!

 

i have regreased the front and rear u joints and drive shafts.. the clicking was there before greasing and after greasing

 

the light, i beleive, is acuated by a engauged ADD, so that would be good....

Does the click increase with speed, or is it constant?

Since the noise is not there with the hubs locked in 2wd, but it is in 4wd it sounds like driveshaft.. That and the ADD sleve are the only thing not "moving" when you are locked in 2wd....

 

dang it! i just replaced the rear u joints! they started clicking with i put the 33s on and the front with that dual u joint knucle looks hard :| ill get one of the techs at work to have a look at it!