2001 Dodge Ram OD goes off

Tiny
ISRDUDE
  • MEMBER
  • 2001 DODGE RAM
  • V8
  • 4WD
  • AUTOMATIC
  • 69,000 MILES
I'll be driving my truck and all is fine. Then, the OD Off light comes on and the OD kicks off. Pressing the switch will not re-engage. Sometimes, after awhile, the OD off light will go out but the check engine light comes on. Other times, if I shut off vehicle, the OD light goes out but after a short time the check engine illuminates. The good news is after the OD off goes out, I get OD back. The code for the check engine is for conflict between the OD and the TCC solenoids. Tranny shop checked and can't find anything amiss. Can't get it to duplicate with scanner on either. Another shop had same year model viehicle doing same and are not able to find cause. Tranny was just rebuilt and new solenoids put in. Shop has narrowed to something electrical but. Currently, with check engine light reset, I've drove truck 270 miles with no problem but I'm expecting it to happen again. Problem is while driving you can't predict how long the OD will be out. Thanks
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Thursday, December 24th, 2009 AT 10:03 PM

9 Replies

Tiny
KHLOW2008
  • EXPERT
Hi isrdude,

Thank you for the donation.

What are the exact trouble codes?
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Friday, December 25th, 2009 AT 8:17 AM
Tiny
ISRDUDE
  • MEMBER
P1740 TCC Or OD Solenoid Performance
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Friday, December 25th, 2009 AT 11:04 AM
Tiny
KHLOW2008
  • EXPERT
Since problem is intermittent, there are cases reported whereby it is caused by a poor wiring ground connections for the transmisison wireharness. Recheck/clean all ground connections to see if it helps.
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Saturday, December 26th, 2009 AT 10:27 AM
Tiny
ISRDUDE
  • MEMBER
Checked grounds and connections as well as harness. Just got the check engine lite and P1740 code again, this time without the OD Off light coming off. Both the TCC and Transmission Solenoid's have been changed and tranny rebuild. The tranny shop is baffled. Is it possible that other electrical problems or computer needing reprogrammed could be causing?
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Saturday, January 9th, 2010 AT 4:36 PM
Tiny
MERLIN2021
  • EXPERT
The tranny shop should not be baffled, he should have checked for Tecnical Service Bullitens, and he should redo this for free! Here's the TSB:
46RE - MIL DUE TO DTC P1740 - TCC/OD SOLENOID PERFOR TECHNICAL SERVICE BULLETIN Reference Number(s): 21-11-00, Date of Issue: Date: October 02, 2000 Related Ref Number(s): 21-11-00 ARTICLE BEGINNING 46RE TRANSMISSION MIL DUE TO DTC P1740 - TCC OR OD SOLENOID PERFORMANCE Model(s): 2000-2001 Dodge (AB) Ram Van 2000-2001 Dodge (AN) Dakota 2000-2001 Dodge (BR/BE) Ram Truck 2000-2001 Dodge (DN) Durango Group: Transmissions Bulletin No.: 21-11-00 Effective Date: October 02, 2000 OVERVIEW This bulletin involves the replacement of the transmission pressure boost valve cover plate. SYMPTOM/CONDITION The customer may complain of a Malfunction Indicator Lamp (MIL) illumination. Upon further analysis, it is determined that the MIL is caused by Diagnostic Trouble Code (DTC) P1740 - Torque Converter Clutch (TCC) or Overdrive Solenoid Performance. Other than the MIL, the customer may not notice any other condition with the transmission. This condition may be caused by an intermittent and momentary TCC disengagement condition. The transmission valve body pressure boost valve cover plate has been revised with a larger size orifice hole to address this condition. DIAGNOSIS 1. Warm the transmission to normal operating temperatures. NOTE: This bulletin applies to vehicles equipped with a 46RE transmission built before August 01, 2000 (MDH 0801XX).2. Using the DRB III, perform a torque converter clutch (TCC) stall test. The stall test has been revised so that the TCC remains engaged for a period of four (4) seconds. 3. If the engine stalls as a result of the TCC stall test, then perform the REPAIR PROCEDURE. 4. If the engine does not stall, as a result of the TCC stall test, then further diagnosis is required. The technician may want to consider the following components during their additional diagnosis: a cut or worn input shaft seals, a missing pump lock-up circuit check ball, or worn converter hub, input shaft, reaction shaft, and pump rotor. PARTS REQUIRED NOTE: The DRB III must be operating at release level 50.4 MDS2 system CIS CD2067 or higher (available the week of October 2, 2000) in order to perform the revised torque converter clutch stall test. Do not use earlier version stall test to determine condition of the torque converter clutch.


http://www.2carpros.com/forum/automotive_pictures/62217_p1740_1.jpg


REPAIR PROCEDURE 1. Clean the pressure boost valve cover plate to remove any dirt or rust inhibitor prior to installation. The revised cover plate will have a 1.75 mm (0.069 inch) orifice hole versus a 1.22mm (0.048 inch) orifice hole in the original plate. Make sure it is clean. 2. Using the appropriate Service Manual, Group 21 - Transmissions and Transfer Case, replace the transmission pressure boost valve cover plate P/N 04617012. 3. Verify fluid level after warming up the transmission and cycling the shift lever several times. 4. Verify, and if required, adjust the transmission shift linkage and the transmission throttle valve cable per the appropriate Service Manual procedures. WARRANTY INFORMATION POLICY: Reimbursable within the provisions of the warranty. LABOR OPERATION NO.: 21-95-01-96 - (Plate, Boost Pressure) TIME ALLOWANCE: 1.4 Hrs. LABOR OPERATION NO.: 21-95-01-60 - (Skid Plate Equipped AN/DN) TIME ALLOWANCE: 0.2 Hrs. FAILURE CODE: P8 - New Part
KHLow2008 is partly right, but may not have access to Dodge TSB's Hope you dont mind the intrusion!
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Sunday, January 10th, 2010 AT 2:31 AM
Tiny
KHLOW2008
  • EXPERT
Hi Merlin2021,

What took you so long to get here, lol.

Thanks for the back up.
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Sunday, January 10th, 2010 AT 2:43 AM
Tiny
MERLIN2021
  • EXPERT
No like step on toes!
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Sunday, January 10th, 2010 AT 3:33 AM
Tiny
KHLOW2008
  • EXPERT
Don't worry about that.

If any assistance is offered to me, I would gladly accept. We are here to help and at times we come to a brick wall so whatever help that comes along would be greatly appreciated. If I am not able to help our members, that would make me sad.

Anyway thanks a great deal, you saved my day. I was struggling to gather more information and you did it for me.
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Sunday, January 10th, 2010 AT 7:24 AM
Tiny
MERLIN2021
  • EXPERT
Glad to help!
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Tuesday, January 12th, 2010 AT 2:26 PM

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