Might have posted about this before but my transmission screeches

[Andy69]

Screeching sound coming from the TC area. Like maybe a flywheel rubbing on a metal shield, or a brake rotor rubbing on a dust shield, that sort of sound. Sometimes it’s a chirp, sometimes it doesn’t do it, sometimes it’s continuous. It’s clear watching it spin while running that the flex plate isn’t rubbing. Not sure what else tp check? Bad TC? Something else going out?

 

[Leadhead]

Does it do it only under a load?

 

[Andy69]

Seems to be the opposite. Goes away under load and at higher RPM

 

[Leadhead]

Sure seems like something has to be rubbing on the inspection plate for that kind of noise.

 

[77cruiser]

Did you have 1/8 inch clearance TC to flexplate when you put it in?

 

[Andy69]

Did you have 1/8 inch clearance TC to flexplate when you put it in?

I can’t remember that far back. This combo was installed in the car In 2005. All I did for the resto was pull it out and stick it in a corner of the garage. It had no issues over the course of a year including a trip to CB and a couple to shows In Arkansas

 

[Shovelrick]

Does it screech sitting in Park and while driving?

 

[77cruiser]

I can’t remember that far back. This combo was installed in the car In 2005. All I did for the resto was pull it out and stick it in a corner of the garage. It had no issues over the course of a year including a trip to CB and a couple to shows In Arkansas

OK that's not it.

 

[Shovelrick]

Remove the inspection cover and see if it goes away

 

[Andy69]

Does it screech sitting in Park and while driving?

Mostly in park but it does it at idle in gear. Once the car gets going it goes away

 

[Andy69]

Remove the inspection cover and see if it goes away

My inspection cover is plastic and is currently off

 

[Shovelrick]

My inspection cover is plastic and is currently off

Well that rules that out, torque conv bolts all tight?

 

[Andy69]

I didn’t check them before I put the engine back in but they had been torqued the first time and not removed.

I also can’t see anything obvious looking at it while the engine is running. My concern is it might be something internal in thr TC or transmission has broken or come loose?

 

[cheveslakr]

Starter bendix sticking?

 

[77cruiser]

With the engine idling, pull the TV cable & see if it changes anything.

 

[Andy69]

From the transmission or carb side?

 

[Shovelrick]

Is this an OD trans? T350-T400 I don’t think have TV just Detent cable, or does T350 have a cable for passing gear?

 

[Andy69]

200-4r from a 1987 Cutlass

 

[77cruiser]

200-4r from a 1987 Cutlass

Take it off the carb & pull it & see if it changes the noise. Pulling it raises the line pressure so if something in the pump is amiss it might change it.

 

[Andy69]

Gotcha