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KNOCKING NOISE

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Old Mar 21, 2013 | 09:10 PM
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KNOCKING NOISE

Okay I have a knock that has just started. It only knocks at idle and deceleration. If I am on the throttle or bringing it up on the converter, no knock sounds great. I was under the truck today and noticed the starter would move a little. Tried to tighten but it was already tight. then noticed that if I pushed on the starter it would move the housing it is bolted to. Upon further inspection. I looks like ther is a crack in the housing. not the tranny housing or the engine block this looks like a aluminum spacer about an inch thick.that goes all the way around kinda like an adapter. any ideas? has anyone had a problem like this?
 
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Old Mar 22, 2013 | 02:08 AM
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Bumpity-bump.
 
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Old Mar 22, 2013 | 02:37 AM
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Sounds like a cracked trans adapter/drive plate... it's an adapter to allow the bell housing to bolt to the motor.

Used to hear about them quite a bit a few years ago, haven't heard in a while, but that's what it seems like.

Any signs of a possible hydrolock situation to cause the additional stress?
 
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Old Mar 22, 2013 | 08:20 AM
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Stop running the engine before you destroy your flexplate...
If the starter adapter spacer is cracked you probably have a preload condition...
There was a tsb/recall about it.
 
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Old Apr 1, 2013 | 04:11 PM
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I have started to pull the transmission to look at the flex plate. The starter was not in a bind. so I am thinking that it is a cracked flex plate. I have the tranny back far enough to see the bolts but need about 5 more inches to be able to get the bolts off.. I will keep posting when I find something out.
 
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Old Apr 5, 2013 | 01:28 PM
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Well, pulled the tranny back far enough to get the flex plate boltd off. IT IS A BROKE FLEX PLATE!! So I am off to the parts store to get a new one..
 
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Old Apr 5, 2013 | 02:28 PM
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Well the flex plate is fairly common issue, hopefully that is your issue...what about the cracked adapter?
 
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Old Apr 5, 2013 | 02:54 PM
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Reps for checking here, looking for the problem, and reporting the solution!
 
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Old Apr 9, 2013 | 08:43 AM
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Took off the adapter and looked and could ot find a crack.. It appears that it was just flexing and dirt. lol I am just glad it was just the flex plate.. it is back up and running and all is will..

Thank you all for the help
 
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