ticking noise flex plate-torque converter
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ticking noise flex plate-torque converter
so me and another dodge owner i know both have a ticking noise. the first truck is a 2003 cc 4.7 4x4 automatic trans(think its a 45rfe). truck was bought with a bad motor that the previous owner was part way thru taking apart( to pull and put a junk yard motor in 
) the motor was rebuilt by me, it got heads from odessa out of florida, amazon evergreen parts pistons and gasket set and rod bearings. the motor runs great and has about 800 miles on it since the rebuild. the other truck is a 2005 cc 4.7 545rfe 2wd. it has had the same thing done to the motor as the other truck. the motor runs great and has i think 10k on it since the rebuild. it seems a bit sluggish complared to the 03. so both trucks when cold and some times warm will tick. the noise sound like it is coming from the flex plate/torque converter area. we have pulled the cover to access the flex plate on both and think that is the source of the noise. on the 05 there was one of the flex plate to torque converter bolts loose and looks like there is 2 rings on the flex plate where it has been rubbing something. the rings are about a 1/2 inch from the valley of the teeth. the 03 has no rings from rubbing but was driven with one bolt missing for 600ish miles. also when looking at he flexplate they both seem to have a little wobble like a mm or 2. if anyone has experience with flaxplate failer or torque converter failure i would love to hear about it and your solution. all thoughts and comments welcome
) the motor was rebuilt by me, it got heads from odessa out of florida, amazon evergreen parts pistons and gasket set and rod bearings. the motor runs great and has about 800 miles on it since the rebuild. the other truck is a 2005 cc 4.7 545rfe 2wd. it has had the same thing done to the motor as the other truck. the motor runs great and has i think 10k on it since the rebuild. it seems a bit sluggish complared to the 03. so both trucks when cold and some times warm will tick. the noise sound like it is coming from the flex plate/torque converter area. we have pulled the cover to access the flex plate on both and think that is the source of the noise. on the 05 there was one of the flex plate to torque converter bolts loose and looks like there is 2 rings on the flex plate where it has been rubbing something. the rings are about a 1/2 inch from the valley of the teeth. the 03 has no rings from rubbing but was driven with one bolt missing for 600ish miles. also when looking at he flexplate they both seem to have a little wobble like a mm or 2. if anyone has experience with flaxplate failer or torque converter failure i would love to hear about it and your solution. all thoughts and comments welcome
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bump/new info
talked to local dodge dealer and they have sold around 70 flexplates for these trucks in the past 2 years. so it is definitly a common problem. they crack around the bolts that hold it to the crank. have a flexplate and torque converter on the way from the dealer for the 2wd truck. will update after the tear down and install.
talked to local dodge dealer and they have sold around 70 flexplates for these trucks in the past 2 years. so it is definitly a common problem. they crack around the bolts that hold it to the crank. have a flexplate and torque converter on the way from the dealer for the 2wd truck. will update after the tear down and install.
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From: Clayton MI
I know on some GM's, there was a 'ring washer' that all the bolts went thru, to help reinforce that area on the flex plate. Think something like that might be available for your dodge? (either that, or make one.......)
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update...
so the 4x4 truck of mine had exhaust manifold leak. used the reverse flow up the exhaust with a shop vac and soap water to find it. used m8 x 1.25 x 40mm bolts from lowes at 1 dollar each (a lot cheaper then stock bolts) now may have a slight rocker/lash adjuster tick but its not bad. the other truck the 2wd got a new torque converter, flex plate (old flex plate may have had slight cracks at most if any) and used transmission. that gave the truck everything it was missing as far as sluggish and throttle response. tick noise on it has not been checked for but i would bet its exhaust manifold bolts also. so its not just a hemi thing and for less then 20 bucks at lowes it is well worth fixing. thanks to all the other users/posters that had other problems that they fixed that led me to try the leak test.
so the 4x4 truck of mine had exhaust manifold leak. used the reverse flow up the exhaust with a shop vac and soap water to find it. used m8 x 1.25 x 40mm bolts from lowes at 1 dollar each (a lot cheaper then stock bolts) now may have a slight rocker/lash adjuster tick but its not bad. the other truck the 2wd got a new torque converter, flex plate (old flex plate may have had slight cracks at most if any) and used transmission. that gave the truck everything it was missing as far as sluggish and throttle response. tick noise on it has not been checked for but i would bet its exhaust manifold bolts also. so its not just a hemi thing and for less then 20 bucks at lowes it is well worth fixing. thanks to all the other users/posters that had other problems that they fixed that led me to try the leak test.
