Loud Rattle coming from bell housing

[zlonsway]

My truck has developed a loud rattling noise while sitting at idle. The noise sounds like it is coming from the bell housing. Noise goes away at about 1500 RPMs. Anybody have an idea of what it might be?

 

[hondarider552]

Converter bolts ?

 

[coldLBZ]

Flexplate maybe? My truck is doing the same thing.
Here's my thread: http://www.duramaxdiesels.com/forum/showthread.php?t=31388

 

[Righteyeblind]

Flexplate?

 

[Mike L.]

Converter clutches rattling.

 

[maine04max]

mine had a rattle sound at idle in park and neutral , but went away in gear . we thought for sure flexplate or bolts . we pulled it and everything looked fine .

 

[zlonsway]

Mike, would that indicate that the converter is junk? If so, what would cause this?

 

[Mike L.]

It only means that the clutches are a little loose.

 

[[email protected]]

So any conclusion to this? Mine just started to do the same thing, built trans, triple disc converter. 15k since build.

 

[WolfLMM]

Mine had/has a rattle. I just bumped up my idle to 720 and it stopped completely. 1056 Suncoast converter. Bolts are tight and flex plate is fine

 

[LBZ]

My purple 5 star rattled at idle. It's normal for some converters to do this I was told. Annoying though.

 

[coldLBZ]

Mine had/has a rattle. I just bumped up my idle to 720 and it stopped completely. 1056 Suncoast converter. Bolts are tight and flex plate is fine

When mine was rattling I had a 1056 as well.

 

[[email protected]]

Mine only does it while in gear at a stop. Not so much a rattle as it is a bad pump noise(whine). Torque converter bolts are tight. Pressure relief valve maybe? Anyone ever have that or a pump go out? Ultimate trans in boise did my build, running their 37-100 converter. I've even got them scratching their heads in this one.

 

[sickdiesel]

my 1057 started rattling right before it blew up..

my DPC has had a slight rattle to it in P and N since day one and it is still going great. no issues.

 

[jwg03]

Question for Mike! I bought an 01 lb7 215k last summer, Ive put about 5k miles on since. Torque converter wasnt rattling when I got it. But serviced it and shortly thereafter is around when it started. Transmissions still running great, pulled hay trailer couple weeks ago. Should I be worried, stop driving, replace converter? I dont have much history on it, whats been done to it. Its annoying as hell

 

[Mike L.]

Question for Mike! I bought an 01 lb7 215k last summer, Ive put about 5k miles on since. Torque converter wasnt rattling when I got it. But serviced it and shortly thereafter is around when it started. Transmissions still running great, pulled hay trailer couple weeks ago. Should I be worried, stop driving, replace converter? I dont have much history on it, whats been done to it. Its annoying as hell

I wouldn't be worried. Many times the pulse of a diesel engine will cause the clutches to rattle.

 

[jwg03]

Thank You, Mike..