2001 Acura TL PLEASE HELP ME! INFAMOUS CEL P1798.G2G CRO

Tiny
SICK_OF_TRANNY_REPAIRS
  • MEMBER
  • 2001 ACURA TL
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 140,000 MILES
HI Everyone,

I got a 2001 Acura TL. That once again has a tranny issue. I know these are infamous but I shouldn't have this problem. Here is a quick bio:

1. Got tranny rebuilt in January 2010
2. Had to come back to mechanic to fix solenoids that failed. (March 2010)
3. One solenoid that did not get fixed in time, burned out a few plates, so he took tranny down and did partial rebuild in (June 2010), and car was running good, but the lights came back on. The car ran fine except for it has a very slow acceleration. When it gets up to higher speeds its fine

Now, about 3 weeks ago he had to replace the Shift Solenoid, or solenoid A (the big one on top of the transmission) and he replaced it with a used one, that failed. So I took the car to Acura last week (August 11th), and had gotten that same solenoid changed with a brand new one and the ran Great! I had the full power back and the car ran excellent! You would think the problem is fixed! WELL, THINK AGAIN!

I drove the car about an hour to Queens, and then when I got there the lights came back, and the car started doing the slow acceleration thing again. Now I got the infamous P1768 code along with the TCS light on and the blinking D5 light:

Pressure control solenoid valve"A" circuit failure

- Low Transmission Fluid (I got that changed last week when the Acura man replaced the solenoid)
- Open or short circuit condition
-Poor Connection
-Failed PCS Solenoid A

Someone please help me because I have to drive from New York to Georgia in a few weeks, and although my car would probably make it, I don't want any scandals. I know I need a new battery cause its a little weak, but I still powers my car fine in the summer. Can anyone please tell me what I can do?

Thanks,
Louis
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Sunday, August 15th, 2010 AT 7:36 PM

5 Replies

Tiny
KHLOW2008
  • EXPERT
Hi Louis,

I have sent you the diagnostic files, go through them and see if anything comes up.
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Monday, August 16th, 2010 AT 12:08 PM
Tiny
SICK_OF_TRANNY_REPAIRS
  • MEMBER
Hey, thanks for the reply, but I didn't see the diagnostic files you sent me in my inbox, or my e-mail. Where did you send them, so I can find them? Please let me know when you can.

Thanks,
Louis
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Wednesday, August 18th, 2010 AT 1:14 AM
Tiny
KHLOW2008
  • EXPERT
File was sent to this email as listed in your profile.

Fblofusa@aol. Com

I have resend the file again. Check your spam folder if necessary.
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Wednesday, August 18th, 2010 AT 9:10 AM
Tiny
SICK_OF_TRANNY_REPAIRS
  • MEMBER
Thanks for the diagnostic files! It turns out the problem was my plug that connects to the solenoid. It must have been faulty because the connector kept slipping off, so the mechanic actually cut off my plug and wired another one that he got from a different car, and the light went off! I drove the car for a week and a half with no light and for about 400 miles! SUCCESS!

Well, not quite. A few days ago the light came back on and AutoZone said it was for CEL P0740. When I took it to a different mechanic at Acura, he got a different code and it was for the Torque Converter, mind u that was replaced in Jan. When the tranny was done. This sucks and I leave for my road trip in TWO DAYS! UGH!

As for the car, it drives great on the highway. When I first start it and drive through town it gives little kicks here and there when shifting into gear. Do you think it might be another wiring issue? Is this something that will kill the car if I still take my trip (12 hour drive)? Please let me know.

Thanks,
Louis
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Monday, August 30th, 2010 AT 8:28 PM
Tiny
KHLOW2008
  • EXPERT
The lock-up control system is not gpoing to affect much except a higher fuel consumption and vehicle can still be driven.

It could be a wiring or solenoid fault.

DTC P0740: PROBLEM IN LOCK-UP CONTROL SYSTEM
NOTE:
" Record all freeze data before you troubleshoot.
" Keep these replacement solenoid valves on hand:

- Torque converter clutch solenoid valve
- A/T clutch pressure control solenoid valve C

1. Check whether the OBD II scan tool indicates another code.
Does the OBD II scan tool indicate another code?
YES - Perform the troubleshooting flowchart for the indicated code(s). Recheck for code P0740 after troubleshooting.
NO - Go to step 2.
NOTE:
Do not continue with this troubleshooting until the causes of any other DTCs have been corrected.

2. Measure the line pressure.
Is the line pressure within the service limit?

YES - Go to step 3.
NO - Repair the hydraulic system as necessary.

3. Replace the torque converter clutch solenoid valve.

4. Replace the A/T clutch pressure control solenoid valve C.

5. Turn the ignition switch OFF, and reset the PCM memory by removing the BACK UP fuse in the passenger's under-dash fuse/relay box for more than 10 seconds.

6. Using the scan tool, check to be sure that the engine coolant temperature is 176 ohmF (80 ohmC) or above.

7. Calibrate the engine idle control system in the PCM, see PCM Idle Learn Procedure, and drive the vehicle at 55 mph (88 km/h) for more than one minute.

8. Recheck for code P0740.

Does the OBD II scan tool indicate code P0740?

YES - Replace the transmission and torque converter.
NO - The system is OK at this time.
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Monday, August 30th, 2010 AT 11:31 PM

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