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Old 08-08-2014, 10:15 AM
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It's not an exhaust leak

Ok so i've been complaining of this loud clicking noise from primarily the driver's side. Especially heard between 1200-1800 rpm and when theres a load on the drivetrain such as accelerating or going up any kind of incline. It's first heard around 20mph but can be heard at any speed. The noise is not present when parked or coasting in neutral and revving the engine. So it's definitely something in the drivetrain and not the engine.

I went to the dealership with it a few weeks back and they found some loose bolts to the u-joint but that didnt solve it. I then started hearing it almost sound like an exhaust leak. I had a buddy jack it up and we plugged the tailpipe but the exhaust system is solid.. not a single leak. I'm running out of ideas as to what it could be. I've heard the noise differentials make and this isn't it. And given the parameters needed to reproduce the noise i'm kind of at a loss. I have no idea whats causing it.
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Old 08-08-2014, 11:26 AM
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Re: It's not an exhaust leak

Difficult to make anything of the noises heard. I would at least check the U-joints for play (if not already done by the stealer), check the drive shafts CV-joints (if the rubber boot is cracked, the joint will become bad soon) and check fluid levels in front diff and T-case.
Regarding an exhaust leak, eventhough it can be leak free when standing still, when accelerating the engine will move a bit due to the torque and a leak could occur at the manifold to pipe connection.
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Old 08-08-2014, 11:30 AM
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But if the exhaust leak is a possibility then should it be heard while revving in park or neutral? Now one thing I did notice is that at speeds lower then 20 mph it is not heard. So when it shifts at that point after that speed it is heard. And the noise is definitely rpm based... not speed which would rule out CV or U - joint in my opinion. So... transmission maybe?
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Old 08-08-2014, 05:08 PM
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Re: It's not an exhaust leak

Just reving the engine without the resistance of the drivetrain to it, will not make it move to the same extend as when it will transfer torque to the wheels. So it could have an exhaust leak under torque due to the movement of the engine.
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Old 08-08-2014, 08:56 PM
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Re: It's not an exhaust leak

I had a bad flex plate once and it drove me crazy trying to find that noise it sounded just like a bad u-joint under load.someone said to pull the inspection plate on the tranny and sure enough it was about to let go.
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Old 08-08-2014, 08:58 PM
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Quote:
Originally Posted by cherryredjeep View Post
I had a bad flex plate once and it drove me crazy trying to find that noise it sounded just like a bad u-joint under load.someone said to pull the inspection plate on the tranny and sure enough it was about to let go.
That's exactly what mine sounds like... how much did that run ya to fix?
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Old 08-08-2014, 09:39 PM
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Re: It's not an exhaust leak

Quote:
Originally Posted by RandomActs13x View Post
That's exactly what mine sounds like... how much did that run ya to fix?
Phew your talking the 70's led zep,the who,rol stones.

If your sound is when under load and you think its in the driveline ck everything front to back,corner to corner. cv joints,flex plate,u joints,and something often overlooked a small dose of posi lube additive to keep the posi rear from chattering.
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Old 08-08-2014, 10:29 PM
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Re: It's not an exhaust leak

Not familiar with the 5.7, but on the 4.7 you can remove the structural cover, which closes the gap between the lower transmission bell housing and the engine bedplate. You can then inspect the flex plate and torque converter mounting bolts.
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Old 08-09-2014, 10:22 AM
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So I took it today to my buddy and after some test drives and power braking he thinks it's a manifold
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