Question about 2013 Jeep Wrangler

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Fluid dvd codes

P0731 set . done pinion factor. newly rebuild replace k2 clutches ,k3 retainer and piston ,torque converter and valve body.. tried already with good condition tcm but still p0731exist

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  • ben jerkus
    ben jerkus Apr 23, 2014

    tnx bro .. but it was nag 1 w5a580 t/m not 42rle .. sorry bout that dvd i dont who put that to my msg. i used witech scantool...p0731 only dtc were set. nothing else ..

  • _-__-___-_
    _-__-___-_ Apr 23, 2014

    the fsm is clear, 1st gear slips or, the input tach and output tachs is bad. tranny speed sensors. but a real scan toll will will report bad tranny speed sensor for all gears, if one is bad. so 1st slips. ( keep in mind the absense of a DTC, speaks loud too. ) it slips, why is the only question. (is the level right, not overfilled, (foaming up the ATF) checked hot per FSM method , not like engine method.? the fluid coupling can be bad. ( id dought it) but either the clutch packs in the A/T are slipping or the clutch is. id say it not the TC clutch because no DTC for other gears. the NAG1 is rated at 580 = Maximum input torque capacity in Newton-meters (428 ft-lbs.), so slipping is in first , dont make any sense , the witech has $1300 annual license free, is the tool updated to 2013 Jeep cars? or not? if not , maybe your in the dark, DTC wise.

  • ben jerkus
    ben jerkus Apr 24, 2014

    now i pulled out twice to make it sure that ther is no problem inside ..i dismantled and inspect nothing wrong withg any of 1st gear clutches the b1 b2 f1 f2 k3 but to make myself to have no doubt so i decided to replace the f1 and f2 the n k3 retainer and piston .. installed the t/m and yet the dtc reset..

  • _-__-___-_
    _-__-___-_ Apr 24, 2014

    you mean it set. right?. came back? 731s

  • ben jerkus
    ben jerkus Apr 25, 2014

    yes !! it is ..i monitor the sensors n2 n3 got good reading .. no issue on wirong already check also..

  • _-__-___-_
    _-__-___-_ Apr 25, 2014

    i wonder, maybe this transmission (MB) need to be programmed to work right with your car, some USA made A/T learn the car , in the car, I wonder,is this transmission different, in this trans different? 2013 FSM are not easy to find. But Id check it out and see what it says on TCM programming or autolearn ,etc.

  • _-__-___-_
    _-__-___-_ Apr 25, 2014

    you monitored the speed sensors and they showed no signs of slippage, but the PCM/TCM throws 731, , my guess is 731s have other causes. (my on line fSM shows none but again real fSM are hard to get.) The bad thing here, is most on line sources, love to back full lies. they dont have facts on say a new tranny and just copy the oil data forward, seen this BS a zillion times. the classic case is readign a Haynes or Chiltons books. pure copy bs. Id even read the MB , FSM to see what it does. but TCM is unique to Chystler. , so.... we are stuck with them.

  • _-__-___-_
    _-__-___-_ Apr 25, 2014

    full = fill. oil = old.

  • ben jerkus
    ben jerkus Apr 25, 2014

    tnx bro. i appreciated your help.. i have to take my time on it tomorrow again tsk! i have to read a lot and understand things that i don't understand. most of the parts replace internally .. the actual issue is they replace the pcm due to internal memory fault and not starting..then this problem set after that. i pulled the t/m bcoz I've check all external possible causes but found no issue so dismantle replace those parts mention above..

  • _-__-___-_
    _-__-___-_ Apr 25, 2014

    you have seperate PCM and TCM.? may be the PCM is wrong Part number. not for the MB nag1? sure is a hard problem. for sure. P0731 not P1731? I found some new FSM data below.

  • _-__-___-_
    _-__-___-_ Apr 25, 2014

    PINION FACTOR IS NOT PROPERLY PROGRAMMED

  • _-__-___-_
    _-__-___-_ Apr 25, 2014

    LOW TRANSMISSION FLUID (yah right) (no way)

  • _-__-___-_
    _-__-___-_ Apr 25, 2014

    OTHER TRANSMISSION DTCS PRESENT (comment , wrong scan tool or not updated.)

  • _-__-___-_
    _-__-___-_ Apr 25, 2014

    and best of all (joking) "INTERNAL TRANSMISSION FAILURE"

  • _-__-___-_
    _-__-___-_ Apr 25, 2014

    more qouting. "

  • _-__-___-_
    _-__-___-_ Apr 25, 2014

    For a complete wiring diagram, refer to the Wiring Information. Theory of Operation The Transmission Control Module (TCM) constantly calculates the transmission ratio based on the input speed sensor 1 and 2 (N2-N3) signals and the calculated output shaft speed. The intent of this diagnostic is to detect if the transmission is slipping or an invalid gear ratio is present. When Monitored: Engine rpm greater than 450 RPM, no N2 - N3 input speed sensor errors present, no gear selector lever errors present, no ABS system errors, and vehicle speed above 10 Km/h (6 MPH). Set Condition: No shifting operation and actual gear is not the target gear. No shifting operation - actual (calculated) gear is less than target (expected) gear, no plausible gear is calculated, actual (calculated) turbine speed is greater than 300 RPM or calculated transmission ratio is above threshold. During an Upshift - actual (calculated) gear is less than target (expected) gear. During Downshift - actual (calculated) gear is greater than target (expected) gear.

  • _-__-___-_
    _-__-___-_ Apr 25, 2014

    more

  • _-__-___-_
    _-__-___-_ Apr 25, 2014

    Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure). Diagnostic Test CHECK IF THE PINION FACTOR IS PROGRAMMED With the scan tool, check if the pinion factor has been programmed in the TIPM.

  • _-__-___-_
    _-__-___-_ Apr 25, 2014

    Was the Pinion Factor properly programmed for the actual tire size and axle ratio of the vehicle?

  • _-__-___-_
    _-__-___-_ Apr 25, 2014

    comment no autolearn here. seem.

  • _-__-___-_
    _-__-___-_ Apr 25, 2014

    No With the scan tool, properly program the Pinion Factor in the Totally Integrated Power Module (TIPM). Perform the NAG1 TRANSMISSION VERIFICATION TEST. (Refer to DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure). CHECK FOR OTHER TRANSMISSION DTCS With the scan tool, check transmission DTCs. Are there any solenoid and/or solenoid supply voltage DTCs present?

  • _-__-___-_
    _-__-___-_ Apr 25, 2014

    im still quoting. section by section.

  • _-__-___-_
    _-__-___-_ Apr 25, 2014

    end quotes, seem that the TIPM needs to be reprogrammed.

  • _-__-___-_
    _-__-___-_ Apr 25, 2014

    btw: good luck to you !@!!

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  • Jeep Master
  • 20,706 Answers

Stock car? stock tire sizes???????? not hacked with those hacking tools?"superchips, yahdah yah?

DTC codes not DVD, is video.
ok, p07xx, means TRANNY codes.
sounds like you need a tranny man. and why is your car out of warranty, very odd that.?


the key to fixing cars, with DTC errors is to understand how the
test is setup and what the failure means.
this can be easy or hard,
"GEAR RATIO ERROR IN 1ST" from 08 JK FSM.
are you working with zero FSM info? or no alldata.com with such
a complex issue. if yes, why are you? for $15bucks, (free really !)
The Transmission gear ratio is monitored continuously while the transmission is in gear.
Set Condition:
If the ratio of the Input RPM to the Output RPM does not match the current gear ratio when compared to
the known gear ratio.

are you using a real scan tool that can SEE all DTCs on this car
if not you cant fix this car. sorry , cant.
because step 1 is just that.
area there any other DTCs (only works real tool , like my Innova 3160 or better.

Are there any Loss of Prime, Line Pressure Sensor and/or Speed Sensor DTCs present?

test 2 is the stall test .
do you get DTC 731 during the stall.>?
yes then it is slipping. only why is the question.

NO?
No
Repair internal Transmission as necessary. Check all of the components related to the UD and LR
clutches. Inspect the Oil Pump and repair or replace as necessary. Refer to the Service Information
for the proper repair procedures


and last, (first really)
did you read the FSM. page that states.

Perform 42RLE TRANSMISSION VERIFICATION TEST.
3. CHECK FOR INTERMITTENT OPERATION



USE a REAL scan tool DO NOT WORK blind and do not fail to
read the FSM. or you will go broke fast. I promise.
a real Scan tool, reads all JEEP codes. P1,2,3, and well, my FSM has 100s more..... read it.

Posted on Apr 23, 2014

  • _-__-___-_
    _-__-___-_ Apr 23, 2014

    the PCM tells you 1st slips. it measure this full time in all gears. and has tables worst case slip rate (its a slushpump) and the tables account for load factor. ( and pulling a huge trailer) so if it says it slips it does, (my answer assumes all other advance factory codes are not SET, no P1, P2 P3 codes. or no P07xx code, missing them, means you will miss the boat, good luck with the MB tranny

×

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SOURCE: Pinion nut, front differiential Torque

What it might be is what it is, you will need to measure it and write it down, then when you reassemble it, put it back to where it was. The easy way is to mark the nut and the end of the shaft (center punch) and put the nut where it was. Should be 15-30 inch pounds.

Posted on Dec 24, 2009

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SOURCE: torque converter clutch hang up

You mean the Torque converter Clutch Solenoid (TCCS)?
Its cheaper to replace it and your fuel economy will increase.
You could do this your self.

Posted on Mar 28, 2010

  • 137 Answers

SOURCE: the trans won't upshift out

If the transmission is a 700r4, it could be the governor gear which is located on the side rear and have about a three inch cap with a snap retainer. If its not and you re-post the problem with the type of transmission, someone will probably have a solution.

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SOURCE: 96 Jeep Grand Cherokee 5.2, can the torque converter be cleaned out of brake fluid

NO!!!

Posted on Apr 09, 2013

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2 Answers

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P0740 Honda - Transmission Lock-Up Control System Fault Possible causes
- Low transmission fluid level
- Dirty transmission fluid
- Faulty torque converter clutch solenoid valve
- Torque converter clutch solenoid valve harness is open or shorted
- Torque converter clutch solenoid valve circuit poor electrical connection

Tech notes
On some Honda vehicles the P0740 code may be set by an overheating torque converter problem which is caused by an insufficient flow to the torque converter release circuit.

P0740 Honda Description
The torque converter clutch solenoid valve is activated, with the gear in D4, by the Transmission Control Module (TCM) in response to signals sent from the vehicle speed and the Engine Control Module (ECM). Lock-up piston operation will then be controlled. When the torque converter clutch solenoid valve is activated, the torque converter lockup clutch will engage creating a 1 to 1 RPM ratio between the transmission input shaft and the rotational speed of the torque converter.
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P0743 - Torque Converter Clutch Circuit Electrical
Possible causes- Faulty torque converter clutch solenoid valve
- Torque converter clutch solenoid valve harness or connectors
- Torque converter clutch solenoid valve circuit is open or shorted
- Low transmission fluid level
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Possible causes- Low transmission fluid level
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P0740 JEEP - Torque Converter Clutch Circuit
Symptoms
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Possible causes
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- Dirty transmission fluid
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- Torque converter clutch solenoid valve circuit is open or shorted

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P0740 JEEP Description
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