C7&7

So...cruising down the highway last week my car developed a strange vibration / moaning noise from what seems to be from the clutch, torque tube, tranny..... Only really does it when the car is cold and has a load on it. I shot a couple videos of the sound. the first video is when it is pretty cold and I drove it for a bit. the second video is when the car is warm and you can hear it less. the third video is just me revving the motor to make sure I dont hear the sound in the engine / rotating assembly (and I don't thankfully).

In reading a little bit I have heard the torque tube having issues can cause this vibration / ticking sound? Anyone have experience with that? The sound is just really noticeable inside the cabin with the exhaust flaps closed.

Car is running fine. Temps are fine. Pressures are fine, etc.

FYREANT

Wow.. that's weird man. Wonder if you have a bolt or two come loose from the pressure plate or torque tube..

C7&7

You hear that moaning sound Ant? It's defiantly there in the first video. What's so weird is I was just cruising normal in 7th at like 80 when it started. I'm gonna get it in the air and pull the flex plate and have a look around.

Steven Popham

I don't have anything professional to add here, but check your rear end oil it sounds like gear wine to me

C7&7

Yea I think I'm gonna change the fluids in the read end and tranny. Long shot but we'll see. My gut tells me it's something with the torque tube or clutch/pressure plate/flywheel.

FYREANT

Gear whine would be constant, not an "on/off" type of sound. Keep us postsd once you get it up.

C7&7

I've been doing some homework and I really think it might be the torque tube. There's some bushing in there that can go **** up. Wonder if I can get it warrantied. May just take it to the dealership and take my chances. Even if I have to pay for it I'll have the peace of mind.

clegg

That does sound like the TT or pressure plate ish.
I would def try the dealer first. My dealer wouldn't even have a clue if there was a blower on the car. lol

C7&7

Plan right now is to probably take it in Tuesday (when the monsoon stops in DFW). I'll keep you guys posted. I'm sure it's gonna cost be a pretty penny. They won't warranty **** I'm sure.

C7&7

Ok everyone wanted to follow up with my findings and progress on my issue...

Drum roll..... It ended up being the high pressure fuel pump. Replaced it with the LT4 Pump (turned up the boost while I was at it) and she is good as new.

The pump was still mechanically working obviously but was just making this awful noise.

FYREANT

Thats great to know it wasn't something requiring more intrusive repair!

C7&7

Yea agreed Ant. Trailered it down to LMR and Steven and the guys jumped right one it. Turned up the boost some while I was there to. Went from 7psi to 8.5 and did a gauge behind the NAV. Which is so SICK.

FYREANT

what were your new numbers?

C7&7

702/580

FYREANT

Nice!!

officermartinez

Awesome! F'in awesome.. Glad you got your little gremlin resolved C7&7. Now, keeping my fingers crossed for FYREANT's gremlin!

FYREANT

Thanks man. It has really beat me up. Trying to keep faith that there is light at the end of the tunnel!