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Old 11-24-2019, 07:33 PM #31
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Nope, no codes were present nor did I expect any. Nor did I hear any noises. But at that time the POS Aisin fan clutch bearing was drowning out any other sounds. Can you get underneath while in P/N and hear the origin of the noise?

Yes, the stall test is a test to test the tc, though as in my case it passed yet the TC was bad.

I don’t know if anyone rents a tranny pressure gauge. I am not even sure the FSM gives numerical parameters for a pass/fail. I do know specific tranny FSMs for the a340 are listed on Fleabay from time to time.

Exhaust original?
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Old 11-25-2019, 10:20 AM #32
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Quote:
Originally Posted by SaulG View Post


Where is Trans cable adjustment?
No trans cable to adjust on 2001-2002. OP has a 2002.

I'm sure you and OP know this, but for others who stumble upon this thread in the future: a line pressure test doesn't test torque converter failure or flexplate failure. A line pressure test is for checking the transmission fluid pump operation (and also the correct way to set the transmission throttle cable to set line pressure).
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Old 11-25-2019, 01:47 PM #33
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Quote:
Originally Posted by LittleCaesar View Post
Can you get underneath while in P/N and hear the origin of the noise?

Yes, the stall test is a test to test the tc, though as in my case it passed yet the TC was bad.

I don’t know if anyone rents a tranny pressure gauge. I am not even sure the FSM gives numerical parameters for a pass/fail. I do know specific tranny FSMs for the a340 are listed on Fleabay from time to time.

Exhaust original?
When I was underneath over the weekend the sound seemed to be in the general bell housing region but not convincing enough to be definitive. That's when I started to consider the exhaust/manifold since an issue there can create similar symptoms from what I've read. It's also possible the slight slipping I thought I experienced a few nights ago could have been poor acceleration due to an exhaust leak? To my knowledge the exhaust is original. The previous owner had all records of maintenance from Toyota & didn't see any mention of a new exhaust.

I've been flipping through my FSM for stall test instructions but haven't found it yet.

If the FSM doesn't give numerical parameters for pass/fail trans pressure test, is it worth doing or safe?


Quote:
Originally Posted by Bad Luck View Post
No trans cable to adjust on 2001-2002. OP has a 2002.

I'm sure you and OP know this, but for others who stumble upon this thread in the future: a line pressure test doesn't test torque converter failure or flexplate failure. A line pressure test is for checking the transmission fluid pump operation (and also the correct way to set the transmission throttle cable to set line pressure).
I had no idea what a line pressure test tests for so thank you for the clarification.
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Old 12-04-2019, 04:24 PM #34
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Update:
I got a pending P0770 code, Shift Solenoid E malfunction, last night on my drive home. Shortly after I noticed my trans temps seemed about 10-20* hotter. Started a new thread specific to that code since I can rule out the flexplate for now.

P0770: Deciding on repair options

FSM P0770 & solenoid testing procedure:
http://www.teamtoyota4x4.org/archivi...at/cip0770.pdf

FSM torque converter testing procedure:
http://www.teamtoyota4x4.org/archivi...ccadp/insp.pdf
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Last edited by fourfive; 12-04-2019 at 11:24 PM. Reason: Correct FSM link
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Old 12-16-2019, 01:12 PM #35
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Inspected my flexplate after dropping my transmission this weekend. Flexplate looks good & no signs of cracking. Thought about getting a new one but decided to keep the original and just replace the transmission. I'm guessing my rattling noise was from the torque converter.
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Auto transmission compromised if flexplate fails?-flexplate-jpg 
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