help a nieghbor
Cargo Master
Joined: Feb 2011
Posts: 3,450
Likes: 13
From: Forest lake minnesota
What was the reason for the switch out, could the bad motor damaged the torque converter, Also did you visibly check the flexplate to make sure there were no cracks in it?
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New User
Joined: Dec 2013
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No, I was lucky enough to get asked if I know what is wrong after the motor was swap out They told me they had a hard time getting the motor and trans to mate up they had both of them together and did knot have the TC studs going thru the flex plate so they loosen both of them and got them lined up. Sounds like metal is just litely scraping it comes and goes with rpm scrapes more reverse then drive. thanks for your advice
Postmaster
Joined: Aug 2008
Posts: 4,092
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From: Olympia
Did the torque converter seat properly? You need to spin it and push it- it clicks in like three times. If you don't have it in all the way it could be causing issues. Although- if the engine is bolted up, i'm not sure it would be making those sounds. I once bolted the engine together with the torque converter not seated properly and cracked the transmission pump- lol.
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It's not always there and it sounds just like a metal fan blade just barley hitting something I put in drive u could barley hear it put it in reverse a lot louder. I drove the truck around the block and it shift ok. That's what I was trying to find out if a crack flex-plate would sound like this. THANKS use all the help I could get right now
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No I can't but I left the plug out just n case there was something lose in there getting thrown around.
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Cargo Master
Joined: Feb 2011
Posts: 3,450
Likes: 13
From: Forest lake minnesota
Nothing changes in the torque converter between drive and reverse , the only thing that changes is the direction of the thrust on the trans mounts and the motor mounts. I think you are going to be stuck pulling the trans to see whats going on..
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Laughing Gas
Joined: Nov 2012
Posts: 1,169
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From: Bismarck, ND
I had the exact same thing happen to me when I pulled the trans in my wife's Jeep Wrangler. I had to replace the front trans seal. When I got it all back together I had the same noise issue. I was pulling my hair out because I didn't want to pull all that driveline again.
It ended up being the crank sensor pickup that inserts into the top side of the trans bellhousing was pushed in too far and the flywheel was just grazing it. There was some play in the depth of the sensor mount, so I loosened it and pulled it out a eighth inch and retightened it.
No idea where the crank sensor goes in the 5.4 since I've never pulled one, but maybe it's something similar?
It ended up being the crank sensor pickup that inserts into the top side of the trans bellhousing was pushed in too far and the flywheel was just grazing it. There was some play in the depth of the sensor mount, so I loosened it and pulled it out a eighth inch and retightened it.
No idea where the crank sensor goes in the 5.4 since I've never pulled one, but maybe it's something similar?
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