CEL - p0740 - Minor Problem
08-01-2007, 05:24 PM
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CEL - p0740 - Minor Problem
Supposedly from the search I've done this is a MAJOR problem. I am however, getting very minor symptoms related to this issue. Which is really odd. Most of the people who had this trouble code show up had to replace there tranny. It really doesn't feel that drastic.
The only problems I notice are random sudden jolts when shifting from 1st to 2nd gear. This rarely happens though.
The other problem is my reverse is harder to shift into. It will crank into reverse but not all the time. This problem is also fairly random. However there is quite a delayed reaction to get into reverse. I'd say about 2 seconds.
Well if anyone can let me know if there's a fix to this TCC Circuit Malfunction other than replacing the Transmission please let me know. From what I see I need to replace the TCC Solenoid.
The only problems I notice are random sudden jolts when shifting from 1st to 2nd gear. This rarely happens though.
The other problem is my reverse is harder to shift into. It will crank into reverse but not all the time. This problem is also fairly random. However there is quite a delayed reaction to get into reverse. I'd say about 2 seconds.
Well if anyone can let me know if there's a fix to this TCC Circuit Malfunction other than replacing the Transmission please let me know. From what I see I need to replace the TCC Solenoid.
08-01-2007, 05:43 PM
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are you still under the extended warranty
08-01-2007, 06:54 PM
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Originally Posted by fsttyms1
are you still under the extended warranty
08-01-2007, 07:40 PM
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Originally Posted by PunkAssGG
Oh forgot to mention, I have 167,000 miles on this car. So I'm not in my warranty. Anyways, the car is a 99 Acura 3.2TL so they don't have a transmission recall on this certain vehicle.
Unfortunately i cant give you much help or hope. Most with issues like that end up getting the trans replaced. I dont have the manual here to see if there is actually something that can be replaced externally or if the damage has already happened and is whats causing the trouble code.
08-01-2007, 11:15 PM
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1999 Acura TL V6-3206cc 3.2TL SOHC MFI Copyright 2007, ALLDATA 9.20 Page 1
Transmisson Control Systems: Testing and Inspection
P0740
DTC P0740: Problem in Lock-up Control System
Transmisson Control Systems: Testing and Inspection
P0740
DTC P0740: Problem in Lock-up Control System
Code:
1. Measure the line pressure. Is the line pressure within the service limit? 2. Replace the Lock-Up Control Solenoid Assembly set (lock-up control solenoid valve/shift control solenoid valve A assembly and the A/T clutch pressure control solenoid valves A and B. 3. Turn the ignition switch OFF, and reset the PCM memory by removing the BACK UP fuse in the passenger's under-dash fuse/reay box for more than 10 seconds. 4. Using the scan tool, check to be sure that the engine coolant temprature is 176F (80C) or above. 6. Calibrate the engine idle control system in the PCM, and drive the vehicle at 55 mph (88km/h) for more than 1 minute. 7. Recheck for code P0740. Does the OBD II scan tool indicate code P0740? YES - Replace the transmission and torque converter. A NO - The system is OK at this time.
08-01-2007, 11:44 PM
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Originally Posted by PunkAssGG
1999 Acura TL V6-3206cc 3.2TL SOHC MFI Copyright 2007, ALLDATA 9.20 Page 1
Transmisson Control Systems: Testing and Inspection
P0740
DTC P0740: Problem in Lock-up Control System
Transmisson Control Systems: Testing and Inspection
P0740
DTC P0740: Problem in Lock-up Control System
Code:
1. Measure the line pressure. Is the line pressure within the service limit? 2. Replace the Lock-Up Control Solenoid Assembly set (lock-up control solenoid valve/shift control solenoid valve A assembly and the A/T clutch pressure control solenoid valves A and B. 3. Turn the ignition switch OFF, and reset the PCM memory by removing the BACK UP fuse in the passenger's under-dash fuse/reay box for more than 10 seconds. 4. Using the scan tool, check to be sure that the engine coolant temprature is 176F (80C) or above. 6. Calibrate the engine idle control system in the PCM, and drive the vehicle at 55 mph (88km/h) for more than 1 minute. 7. Recheck for code P0740. Does the OBD II scan tool indicate code P0740? YES - Replace the transmission and torque converter. A NO - The system is OK at this time.
I'm taking the transmission in first thing tomorrow morning at 8AM but I just realized that whenever I drive the engine really hard it won't shift until it's in redline for a good 3-5 seconds. But if I drive really smoothly it will shift just fine.
This only applies to 1st to 2nd gear shifts.
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08-11-2007, 09:05 AM
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I have the same issues, started out seeming like a minor problem but then became a major issue on the highway in trafffic conditions!
My tranny was replaced under warranty already, I have 150K and now wondering what to do!
My tranny was replaced under warranty already, I have 150K and now wondering what to do!
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