New Torque Converter w/Noise

[SHOWPONY]

I had to have the stock torque converter replaced on my 96 crewcab powerstroke with 135,000 miles. After taking it to the local shop they replaced it with a heavy duty 3 disc system and it is now making a noise that sounds like sand or gravel tumbeling around. It sounds like it is coming from down near the heater vent area and it is only heard at about 1250 RPM and stops if i go over 2000 RPM. The minute i slow down below 2000 it will start up again.
Is this new heavy duty converter making more noise than it should or am i just worring to much about it........
Thanks,
Mark

[matter]

doesn't sound healthy, i'd take it back and ask the shop to take it for a spin with you, i also have a triple disc tq, and it runs smooth, no noise.

[SHOWPONY]

I drove it tonight for about a 20 miles round trip and it made the noise on the way up and then it sat for a few hours and on the way back i heard nothing..... The sound also sounds almost like a vaccuum leak. I have also been hearing my torbo whine a lot and I never heard it before this converter was put in.

[SHOWPONY]

OK I see that i put this post in the wrong year for my truck..... should it be moved?????
Drove the truck to work again today and the sound is back. I almost acts like it is engine braking or something because it really lugs the truck down when the noise is heard and the only way to stop the noise is to get back on the gas and wind up the turbo.

[ipz2222]

Back to the installing shop.

[SHOWPONY]

OK I was told that the noise is from the dump gate on the turbo....... it has been happening when the engine is colder so it makes sense. My truck always seems to run on the cold side, are the blankets a good item to allow it to run warmer? I live in MT.
I thought I would see what anyone else had to say about it.