Wierd noise while driving

[prez1967]

Just started two days ago. Happens randomly while cruising. Steady on gas, smooth road

 

[prez1967]

Happening more and more today. Doesnt affect driving, but it is getting louder and lasts longer. Started 10 min into commute, ended 20 min into commute, I drove for 45 min into work this morning.

Temperature normal, engine/tranny responsiveness normal, no CEL.

Any ideas? I should have time to throw it on lift either tonight or Tuesday after work.

 

[Wegner44]

Sounds like it is possessed! Does it make a difference if you are going slightly uphill? Normal terrain changes? Or totally random?

 

[prez1967]

Totally random!!! I can sometimes induce it if i make a sharp left wheel jerk but not always. Nothing at low speeds.

Planning on putting car up on lift tonight. I imagine its suspension related? No performance/driveability different when noise occurs so I'm hoping its something simple.

 

[the bus]

Does it change if turn wheel a little? Maybe a front wheel bearing hub.

Also check for vacuum leaks. Sort of sounds like 4wd trying to engage partially. There is a vac hose going to each hub. But the leak could be elsewhere. A large vacuum leak will cause a lean check engine light, but small one will do this. Also if using ac it will flip vent to defrost.

Nice video.. helps a little.

 

[Wegner44]

If it wasn't so loud, I would theorize front wheel bearings. But that growl seems pretty loud, almost like a shudder/vibration. Can't wait to hear what this is.

 

[prez1967]

Truck was in 2wd when this issue first materialized. Truck was switched into 4x4 two days ago when we got some wet snow for about 20 min.

Would that rule out vacuum leak?

 

[prez1967]

Looks like passenger side front axle boot needs attention but is this the possible source of my noise?

Also, any decent write ups on how to replace a front axle? Also need to replace front axle seals that have been seeping a bit

 

[lbv150]

My vote is wheel bearing or CV joint.

 

[rjdelp7]

AC compressor? Turn off defroster. It kicks on randomly, when in that mode. Grease around boot, it needs attention.