Cobra Jet
Well-Known Member
- Joined
- April 11, 2006
- Messages
- 152
- Reaction score
- 14
- City, State
- Southern, NJ
- Year, Model & Trim Level
- 2004 XLS
First, yes, I have completed a "search" of the subject and have read every single thread as well (all of which are very informative) pertaining to "harmonic balancer" for the 4.0 engine...
I just have one question that I have not seen posted in any of those threads w/ regards to a failing 4.0 harmonic balancer:
Will the balancer only squeal or squeak when it is under load (meaning, when the serpentine belt is ON)?
The reason I ask is, I have already PREVIOUSLY replaced (due to wear):
belt tensioner assembly
idler pulley
Now I am getting the famous "squeal" at idle & while driving - but, when I remove the serpentine from the front accessories and start the engine w/ no belt - I don't get any squeal at all.
The other accessory drive pulleys (water pump, A/C, P/S & Alt) do not make any bearing or other noises when spun manually w/ the belt off (nor do I hear any noises coming from them when the truck is running).
I also see a slight "bobbing" of the belt tensioner when the truck is running @ idle (and belt is on).
I just have one question that I have not seen posted in any of those threads w/ regards to a failing 4.0 harmonic balancer:
Will the balancer only squeal or squeak when it is under load (meaning, when the serpentine belt is ON)?
The reason I ask is, I have already PREVIOUSLY replaced (due to wear):
belt tensioner assembly
idler pulley
Now I am getting the famous "squeal" at idle & while driving - but, when I remove the serpentine from the front accessories and start the engine w/ no belt - I don't get any squeal at all.
The other accessory drive pulleys (water pump, A/C, P/S & Alt) do not make any bearing or other noises when spun manually w/ the belt off (nor do I hear any noises coming from them when the truck is running).
I also see a slight "bobbing" of the belt tensioner when the truck is running @ idle (and belt is on).