Torque converter clutch leak? saturn 95 sc2

P1740 Torque Converter Clutch or Overdrive Solenoid ...

https://www.engine-codes.com > p1740

Faulty Torque Converter Clutch (TCC) and Overdrive (OD) Solenoid. ... Torque Converter Clutch (TCC) and Overdrive (OD) clutch are tested when the Powertrain Control Module (PCM) requests TCC engagement in 3rd gear and Overdrive. The P1740 code will set if expected RPM drop is not

First the transmission is about $3,600 twice what you were told

You take it to a trans shop they should use the proper test equipment & road test, to check out the codes & maybe just
a converter clutch solenoid is needed

If the trans fluid has never been changed every 3 years since
2003, then the trans may be done & have to be replaced

If the fluid is dark,smells or is burn't,don't change it, as that is not
a fix for anything & it will slip & be unusable.

If a trans shop doesn't take you on the road test or into the shop
to explain things or pitches a rebuilt trans, then try another shop
& go thru the routine a second time

In the end the trans may have to come out, but not from the codes
I see, until properly diagnosed (I used to own a trans shop hope
that helps)

Just keep in mind a fluid change (never a flush) won't remove
debris from the valve body or any solenoids

Changing a failed or clogged solenoid & changing somewhat
clean fluid maybe all you need --cross your fingers-- not many trans
live long - good luck

Go here - www.jeepforum.com/forum/f11/tech-faq-links-tsbs-89273/ - and find the AW-4 Service and Diagnostic Manual. Looks like you need to test some solenoids.

P0740 (M)Torq Con Clutch, No RPM Drop at Lockup. Relationship between engine and vehicle speeds indicated failure of torque convertor clutch lock-up system (TCC/PTU solenoid)
P0743 (M)Torque Converter Clutch Solenoid/ Trans Relay Circuits. An open or shorted condition detected in the torque convertor clutch (part throttle unlock) solenoid control circuit. Shift solenoid C electrical fault - Asin transmission
P0743 (M)Torque Converter Clutch Solenoid/ Trans Relay Circuits. An open or shorted condition detected in the torque convertor part throttle unlock solenoid control circuit (3 or 4-speed auto. trans. only).__________________
.
Rather than banning scary looking black semi-automatic sporting firearms, why don't we
identify and treat the nut jobs pulling the triggers, and put the criminals in jail ?

you can check to see if the torque is stuck on or off with a dealer (saturn/GM)scanner butother than that you gonna have to do it this way,,,if the car starts and you put it in drive and it doesnt stall that means you not lock in TCC torque converter clutch,,,ive never just reaplaced a converter,,,its gonna need a trans rebuild or a new trans,,and the extended warranty is no longer valid since gm dropped saturn,they are not liable anymore,,,,sorry ,,

have u run a trouble code test on the computer control unit? most likely u will find thatthe vehicle speed sensor has failed, it is on the outside of the trans. here is how u run a trouble code test, go to the link for instructions.
http://check-engine-light-codes.blogspot.com/2006/03/gm-1983-95-vehicles-obd1-codes-self.html

your trans has lectronic controls to operate the shifting of your trans. If there is a defect, a fault code will be stored in the computer, called a DTC. You need to have someone with a scan tool check for the fault code. It is likely a solenoid that is not working or stuck.

Get the codes first. Autozone can run the test for free on engines, maybe trans codes too. Call your local Autozone or big parts store and ask them.

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SECTION 307-01: Automatic Transaxle/Transmission 2001 Escape Workshop Manual
DESCRIPTION AND OPERATION Transaxle Description The CD4E automatic transaxle is a four-speed, front wheel drive automatic transaxle with electronic controls for:

• Electronic pressure control (EPC) solenoid for shift quality.
• Shift scheduling.
• 3-2 shift timing.
• Coast braking.
• Torque converter clutch control.

The transaxle features a four element torque converter with a torque clutch and a geartrain that includes:

• Compound planetary gearset.
• Chain drive.
• Planetary gearset final drive.
• Pinion and side gear differential.

The hydraulic control system of the transaxle has five solenoids that control:

• Shift feel, through line pressure control.
• Shift scheduling, through shift valve positioning control.
• Modulated application of the torque converter clutch.
• Timing of 3-2 shifts.
• Engine braking during coast operation.

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Solenoid Valve Body Assembly The solenoid valve body assembly contains the transmission fluid temperature sensor (TFT) sensor, as well as five PCM controlled output devices:

• Electronic pressure control (EPC) solenoid.
• Shift solenoid A (SSA).
• Shift solenoid B (SSB).
• 3-2 timing/coast clutch solenoid (3-2 T/CCS).
• Torque converter clutch (TCC) solenoid.

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You may need your PCM, Powertrain Control Module reflashed by a Ford Dealer.
Try disconnecting your battery for 1/2 hour and then reconnect and see what happens. It will run a little rough and shfit hard until it relearns your engine/trans characteristics.
Let us know results of tests and DTC codes if you get them.

If your torque converter is starting to come apart it could cause severe damage to the rest of the transmission. If it is affordable I would try a second opinion though.

this might be a dumb quest. have you checked the trans fluid ? if so you might need a torque converter in a automatic . or clutch in manual trans.

P0740 is a Torque Converter Clutch Circuit Malfunction, you will need to have just this circuit tested, it is mostly just a defective Torque converter clutch solenoid in the trans or a defective connection to the trans, u do not need another overhaul.

U have a problem in the transmission torque converter clutch control circuit, most likely the solenoid switch that applies the lock up clutch of the torque converter is defective or a the torque converter itself is defective, the trans pan will need to be removed to check the problem further.