Torque converter failure

[Paul G]

What are the more common symptoms when a torque converter fails?

[elacruze]

If the sprag clutch in the stator isn't holding the converter will stall at a lower RPM and feel very sluggish. At a severe stage you will find sparkles in the oil. A ballooned converter may cause a vibration and high stall/weak launch.

[RD]

minor to massive vibrations and knocking sounds

[John_Kunkel]

A failed stator sprag will result in no/reduced stall speed, a seized sprag will result in runaway stall speed. Broken loose internal components will result in rattling sounds and vibration.

[Paul G]

I am getting rattling sounds on deceleration, when I rev over 3000 in nuetral or park and vibration over 3000 rpm. No sparkles in the oil yet. I will try and check the stahl RPM and see how it acts.

[Paul G]

Standing on the brakes the car starts to pull hard at 900 RPM, tires start to spin at 1400 ish. No sparkles in the tranny fluid, I got that engine/tranny vibration at 3000 I cant find and a rattle that is coming from nowhere. How does this sound.

[firefighter3931]

Paul, Does the converter stall feel different than before the noises started ? That seems awefully tight...even for a stock converter.


Ron

[elacruze]

 

I'm not the TC expert here, but IIRC my 6.2 diesel stalls about 1100 rpm. Any gas motor should be higher than that.

[John_Kunkel]

Stall speed depends a lot on brakes, if you're pulling through the brakes at 1400 you don't have enough brakes.

Have you checked the converter and flexplate bolts for tightness? Cracked flexplate?

[Paul G]

Ron,
It does feel different. It used to pull hard from a stop, easy to break the tires loose. It wont do that now unless I stand on the brakes and get the RPM up first. I have been working on the carb, Holley 750, 4160. The carb was flooding out badly. Put a kit in it. Cured the leaking and runs really well at cruise. I thought I may have done something wrong to the carb causing the power loss. It is back to the way it was, floats set at the bottom of the sight hole, just dribbling over. idle smooth, nothing any different with the carb. I have a another thread going for over sized carb, thinking that may be the case.
http://www.dodgecharger.com/forum/index.php/topic,70376.0.html

I see you have been there. YOU GUYS MAKE LIFE EASY YOU KNOW!