T/C Chatter?
Thread Starter
Burning Brakes
Joined: Sep 2003
Posts: 875
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From: Louisville KY
T/C Chatter?
I have an 2000 stall with an OEM sized converter. I noticed a pretty loud chatter sound coming from the T/C area. I've never heard T/C chatter before so i'm not sure. It almost sounds like something is rattleing around on the exahust or something. The fluid is still red and doesn't smell burned. I'm thinking that the 5800 RPM shifts may have done it... if it is in fact the T/C. Any thoughts on this?
Race Director
Joined: Feb 2004
Posts: 12,517
Likes: 19
Check the flexplate for cracks and missing bolts. Both at the crank and torque converter.If you hav chattering in the converter at idle, you have big problems. I doubt that you do. Check the bolts though. Also look carefully at the flexplate for cracks. When a flexplate comes apart, it does it voilently. Check this asap.
Thread Starter
Burning Brakes
Joined: Sep 2003
Posts: 875
Likes: 0
From: Louisville KY
Originally Posted by Pete K
Check the flexplate for cracks and missing bolts. Both at the crank and torque converter.If you hav chattering in the converter at idle, you have big problems. I doubt that you do. Check the bolts though. Also look carefully at the flexplate for cracks. When a flexplate comes apart, it does it voilently. Check this asap.
Heel & Toe
Joined: Apr 2004
Posts: 24
Likes: 0
From: Racine WI
Other ideas
I agree with Pete K. One other possibility after you rule out cracked flex plate and loose bolts etc, is the oil pump and T/C connection. I have seen this twice now where the noise you describe came from the oil pump or the tangs on the T/C. I have seen them sheared off and not engaging the pump correctly and producing a lot of noise. If this is the case you are into a tear down. A good way to track the sound down is with a rod or tube, or stethascope held to the transmission and to your ear. Good luck.
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Thread Starter
Burning Brakes
Joined: Sep 2003
Posts: 875
Likes: 0
From: Louisville KY
Originally Posted by Pete K
True
*super* .... arrrgg 
thanks for all the info guys! I'll keep you posted on the outcome.
Race Director
Joined: Feb 2004
Posts: 12,517
Likes: 19
Originally Posted by kpforce1
I knew the answer Pete, I just had to ask....I mean I love tearing a 2k dollar tranny apart after 10k miles *super* .... arrrgg thanks for all the info guys! I'll keep you posted on the outcome.
*super* .... arrrgg thanks for all the info guys! I'll keep you posted on the outcome.
when does that happen though? lol
Le Mans Master
Joined: Aug 2005
Posts: 5,002
Likes: 5
From: No Opti Here Tn
St. Jude Donor '06
Originally Posted by kpforce1
*UPDATE* Started the car today and the chatter was louder than before... 
I think the advice you have received flexplate etc. is good advice
Maybe it is just me but the year of the car would help
Thread Starter
Burning Brakes
Joined: Sep 2003
Posts: 875
Likes: 0
From: Louisville KY
Alright, I unbolted the Torque Converter from the flexplate and started the car. The noise was still there and sounded exactly the same. If the flexplate is cracked/broken would it make the same noise if the torque converter is unbolted from it? Need a reply because its on the lift now.
Thread Starter
Burning Brakes
Joined: Sep 2003
Posts: 875
Likes: 0
From: Louisville KY
I got the stethiscope out and discovered a wonderfully violent clack clack on #8 and a slight clack on #2. Oil is almost black after 100 miles. I think the engine is comming out. What is the easiest way to check the flexplate? Do i have to unbolt the bottom bolts of the tranny and drop it a little?
What is the easiest way to check the flexplate? Do i have to unbolt the bottom bolts of the tranny and drop it a little?
Last edited by kpforce1; Aug 28, 2005 at 11:45 PM.
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Pull that flexplate completely off, clean it and get some light on it before you start pulling the motor. Those tend to crack around the bolt holes. One thing at a time.