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Old 01-16-2012, 12:08 AM   #1
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Default Transmission knocking?

Alright guys.Im kind of dumbfounded with this one.I explained it to gunner also and he even had no clue.The transmission in my 97 lesabre is knocking.Its not the tc or tc bolts.i put it on the hoist and had someone in it starting and shutting it off and i determined it was strongly from the rear cover where i beleive the 1-2 shift servo is..it also has a shudder when it wants to shift into fourth gear..And if you gun it it will ''slip'' more like nothing is there then it will slam into gear.also when i come to a stop its not down shifting on time and will slam into first after im stopped.then when i go to take off it acts like i just did a nuetral drop..im thinking a sticky valve or two?..But what is the knocking? sounds just like a rod knock.but from that cover...any ideas? also it only does it after warmed up not when cold
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Old 01-16-2012, 01:32 PM   #2
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Well, I would say drop the bottom pan. And see what you find. If you find something other then fluid, you may want to look at replacing the trans. Noise is not a good thing. Before you get to that point. Unbolt the torque converter and slide it back. Start the engine and see if the knock is still there.
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Old 01-16-2012, 05:36 PM   #3
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Don't the 4T65-E'* have TCC solenoids? Just another idea, I know that thats in the side cover though and dont think the converter would give those type of problems. hmm
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Old 01-16-2012, 06:50 PM   #4
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This car ahs a 4t60.Also when i pulled that cover all my fluid came out of it and it looked fine..The car will still drivve so i really dont want to tamper with it till i know what it is it just needs to last till i have time top rebuild to orig one from the car
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Old 02-14-2012, 05:33 PM   #5
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Your noise and slipping issue sounds like what my 95 did a few years ago. The differential pinion pin broke and all the metal shavings found its way into the filter clogging it. The sound you might be hearing is the pump cavitating. I had a video somewhere, but alas, cannot find it.
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Old 02-14-2012, 11:35 PM   #6
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I've seen my share of aluminum rats nests in the bottom pan.
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Old 02-15-2012, 12:31 AM   #7
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eh its no worry now i traded the car for the truck i just got lol i sent a used trans with it though
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