Ticking from the Transmission

[El Jefe]

Thought I had an exhaust leak but put a stethoscope on the trans and its coming from behind the bellhousing. Only occurs when the car is warmed up otherwise it is very faint. Its a very sporadic ticking. Pressing the clutch pedal doesn't change it at all. Whether its in gear or not doesn't change it either. Guy at the exhaust shop said its my TOB. Im at a loss here....Anyone?


DSCI1038-2.flv video by RepnPB21 - Photobucket

[BurnTire]

Hard to hear it on the video. Is it really loud? Can you hear it when you are seated in the car? Being the clutch application doesn't effect the sound points towards a non bearing (pilot, throwout) issue. Are you sure it is not noise transmitting from the crank?

[WildBill]

Thought I had an exhaust leak but put a stethoscope on the trans and its coming from behind the bellhousing. Only occurs when the car is warmed up otherwise it is very faint. Its a very sporadic ticking. Pressing the clutch pedal doesn't change it at all. Whether its in gear or not doesn't change it either. Guy at the exhaust shop said its my TOB. Im at a loss here....Anyone?


DSCI1038-2.flv video by RepnPB21 - Photobucket

Someone put a bomb in there!!!

If it doesn't change with pedal movement, it's prolly NOT your TOB

[El Jefe]

Someone put a bomb in there!!!

If it doesn't change with pedal movement, it's prolly NOT your TOB

Ya I told him it doesn't change when I push the clutch in so it cant be that.

Its only "loud" after the car is warmed up or I get on it a little bit. Ya you can hear it in the car with the windows down. Just a faint sporadic ticking and I can hear it throughout the RPM band. Lift the hood up and you cant hear it at all over the injectors. Put a stethoscope on the heads and its not coming from there.

It sounds to me like its closer to the tail shaft than the bellhousing. I did throw a P2270 code this morning too...Had that same code before I switched from the BBK to the JLT a while back. Seemed to clear itself after the install.

Guess I need to get under the car again and pinpoint exactly where its coming from. What else should I check? In the vid you can hear it clearly with 26 seconds left when I rev it a little. Its sporadic when idling and then a constant ticking the higher the RPM

If I can Im going to put some Royal Purple in it this weekend and see if that changes anything as well. Some guys on SVTP say I need to check the pinion ring on the driveshaft or some sort of S clamp on the driveshaft

[vin man]

Are there any dents in the oil pan? I had a similar situation on my 67. Turned out a dent was causing the crank or connecting rods to touch the oil pan. I little pounding on the pan and the noise went away. :)

[El Jefe]

The crank hardly protrudes into the pan on these Cobras im pretty sure...

Could this be the EGR supply tube? busted or something?

[El Jefe]

Better vid:

DSCI1039-2.flv video by RepnPB21 - Photobucket

[BurnTire]

Sounds like a slight knock, but it is hard to tell from a video. May be nothing or it may be a problem. I have 3 modular motor vehicles and they all make unique noises. Is this something that just started happening?

Also do you have any vibration in the clutch pedal / shifter?

[El Jefe]

Just a few weeks. I do see a clutch replacement in the near future but no vibration really. Going to get under it tomorrow hopefully and pinpoint it.

[WildBill]

I put my head phones on. For the vid, it doesn't sound like drivetrain of any kind.
It sounds too tinny to be bottom end. It sounds like valvetrain to me.

Get a LONG screw driver( unless you have an automotive stethoscope) and place the handle against your scull just above your ear and the tip to various points on the engine. Narrow it down by checking the bolts in the area you hear it strongest with the screwdriver.