Engine Torque-Desired (ft*lbs/Nm) Mass Air Flow: Intake Air Throttle Position-Actual (%) Diesel Particulate Filter Soot Load (%) Exhaust Gas Recirculation Orfice Temperature (deg F/C) Main Injector Event Timing (deg) Trans. It is not common for the knock sensors to fail, especially at such a low mileage. For a converter to operate properly, the engine needs to make as much low and midrange torque as possible in the same rpm range the converter is rated for. All site content Copyright © 2007-var year=new Date(); year=year.getYear(); if (year<1900) year+=1900; document.write(year); FordFlex.net FordFlex.net is in no way affiliated with Ford Motor Company. Notice that we set everything to 90. Most torque converters multiply torque in a 2.5:1 ratio over actual engine torque at stall speed. TORQUE CONVERTER SLIP AL- Allison transmission converter slip, Duramax and Workhorse 34. The car became basically undriveable. When I replaced my transmission and converter, I replaced two mounts and the two dog bones under the engine. I found the cause of the P0325 and P0330 error codes. If the actual slip value is larger that the value derived from this table, the traction control function will apply the chosen Cut Method to limit wheel slip. We thought 10 was bad 2 years ago. Aaron Severson. abs, do you have any recommendations on how to troubleshoot a failing torque converter using ForScan? The car has just under 77k miles. I had "guessed" that it could have been a valve body issue when trying to diagnose on my own and I replaced that to no avail. I’ve been troubleshooting a low RPM with light acceleration shudder on my 2011 EcoBoost Flex. RPM TSS/ISS. I purchased my car 3 weeks ago... from a new car dealership.. LPG Function. These torque converters allow some slippage but it should not vary much from the desired PCM value. Third, make sure that your engine is running right because a transmission chuggle can be caused by many things. In my limited experience, a failing converter in this transmission will start to throw off a lot of black carbon and cause the fluid to rapidly darken. The TCC piston is electronically modulated by increasing the duty cycle of the LR/TCC solenoid until the torque converter slip difference (difference between engine and turbine speed) is within 60 RPM. The mount on the transmission side (under the battery) was severely damaged, the rubber legs inside the bushing were torn through and was allowing a lot of engine movement. The one-way clutch allows the stator to rotate in one direction only with the engine’s crankshaft and converter impeller/shell. » Thu Aug 29, 2019 1:33 am, Post 2011 Flex Limited AWD EcoBoost - Mediterranean Blue Metallic/Silver Roof. As an example, replace your spark plugs if they are original, replace air filter, replace PCV valve. I am however, now chasing some unusual engine noises which are a different issue entirely. INJECTOR RAIL PRESSURE ACTUAL DM- Duramax 37. If your going over ten your gonna need a new torque converter fairly soon..depends how you drive.. my converter started off slipping at about 13 on the 275 and ended up wearing out pretty quick and it began slipping like 45-50 on the gauge. » Fri Aug 30, 2019 10:22 am, Powered by phpBB® Forum Software © phpBB Limited. Navigate to Torque Converter > General. This seems to be a tricky area on the 13 Autos. I changed to the ******* V2 a few weeks ago. A new replacement torque converter costs between $100 and $400, depending on the vehicle model and converter type. Within the stator is the one-way clutch splined onto the transmission’s stator support shaft. Next, click on the Apply/Release sub-tab. Desired slip across torque convertor. Leading provider of high performance automatic transmissions, torque converters and drivetrain components for race, street/strip, hot rod, street rod and towing TCI Racing Calculators JavaScript seems to be disabled in your browser. The TCC solenoid regulates the fluid pressure to the clutch. Utimately, I installed a recycled transmission from a junk yard and a remanufactured torque converter from Ford. (Pictured below) For the A/C Off section – you must ZERO/0 each individual gear. Engine Torque-Actual (ft*lbs/Nm) Est. Desired Slip Table. The labor cost to replace the torque converter is between $200 and $1000, depending on the vehicle model, and the workshop will make the work. For the Use DOD Slip section – turn the switch to Disabled and then ZERO/0 the individual gears also. by SirHandyMan » Sun Apr 07, 2019 9:43 am, Post 33. The torque converter clutch is always slipping somewhere between 5% to 95% when engaged, which depends on vehicle speed and engine load.. We discussed the information to monitor on the scan tool, there is an actual slip, desired slip, and TCC status. Just thought I would share with everyone some recent learnings I've had with my 2010 EB Flex. It stayed there(18.24) from 60mph to 90 when I let off of it. 2/17/2021 12:53:54 PM PONTIAC POWER RULES ! Methods and systems are provided for reduction of VDE harmonics and improvement in the phase alignment of powertrain sensor signals that are asynchronously tasked. The trans temp was never above 160 degrees. I also logged "torque converter slip" and never saw a "0" value...always over 240 on the positive side and as low as -900 on the negative ... Datalog actual vs desired converter slip. You can expect a total torque converter replacement cost of 300$ to 1500$. As the torque converter and horsepower range is moved higher through the RPM range, the smaller torque converters with their higher stall speeds provide maximum torque multiplication where needed. Turbine Shaft Speed. by Silver Flex SEL. This allows engines with a lot of camshaft to idle better. if you dont hammer on it everyday it will last you a long time.. my stock converter had 350 rpms of slip on the 310 tune … CONVERTER SELECTOR ** ADVERTISED stall speeds are based off of a 3600 lb. September 1, 2017. ... Torque Converter Control Function. My truck was still putting down 575 on Dunbar's dyno with 100 RPM of slip..... im seeing 20rpm slip at most on my KEM 345, i know thats different. ! Seems to me that any unchanging value would indicate no lockup/unlock function. ** With this in mind, to achieve a DESIRED or ACTUAL stall speed for your application, it may require a converter with a substantially different ADVERTISED stall speed. The second thing to look for is a lot of slippage between Desired and Actual readings for the TCC in Forscan. As these vehicles age, diagnosing these issues can become more challenging. If the solenoid is not regulating the fluid flow properly, it could cause variability in the torque converter clutch performance as well. Torque Converter FAQ Have the functions for Torque Converter Desired Slip time been added to T43? by SirHandyMan » Fri Mar 29, 2019 6:54 pm, Post Variable Valve Timing Exhaust Bank 1 Actual; Variable Valve Timing Intake Bank 1 Actual; Transmission (only applies to AT equipped vehicles) Gear Commanded; Torque Line Pressure KPA; Torque Converter Slip; Torque Converter Clutch Commanded; THROTTLE. Estimate Converter Slip Wallace Racing BACK to Auto Math. But now with the ******* 275 I am seeing 18.24 at WOT with the converter locked. The wire chaffing is a definite possibility. We connect a fan to an energy source and turn it on. I would suggest starting with the transmission upper mount and also a transmission fluid drain and fill. if you dont hammer on it everyday it will last you a long time.. my stock converter had 350 rpms of slip on the 310 tune and the truck still had all kinds of power even locked. Post If your going over ten your gonna need a new torque converter fairly soon..depends how you drive.. my converter started off slipping at about 13 on the 275 and ended up wearing out pretty quick and it began slipping like 45-50 on the gauge. To do this something needs to slip, and that is the torque converter. I think you probably have some time as long as you dont pound on it. Speed ratio across torque convertor. For example, a 245mm (overall diameter of 10.2”) converter out of a 4T60E might have a code of FLHB. The vehicle suffered a torque converter failure at around 140k miles. vehicle. Turbine Shaft Speed, no FMEM. To get the desired stall for the cars performance after taking off can be as costly as it would be to select and install an improper stall speed in the first place. A torque converter reacts to engine torque—the more torque you feed a converter the better it will perform. by SirHandyMan » Wed Mar 27, 2019 12:52 pm, Post We were wrong. I re-used the "new" valve body and decided to try out my original solenoid pack to avoid having to reprogram the PCM with the new calibration for the solenoid pack that came with the recycled transmission. Plugging it back in all the way and resetting the PCM took care of that problem. by Silver Flex SEL. Turbine Speed (RPM) • Torque Converter Slip (RPM) • Desired … None TSR. I think you should check the fluid level first and foremost. There are a number of posts referencing this issue, look for the wires coming out from under the intake manifold behind the elbow that contains the coolant thermostat. HP Tuners has had this for a while now and the only way to dial in an aftermarket converter, especially multi disc properly. Locate the TCC Desired Slip section. Next, we discussed normal operation of the torque converter clutch and computer commands. However, that did not cure the shuddering problem. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. The custom converter in my '71 LeMans wagon was built my Continental Torque Converters Inc. (310-674-1072), and was designed to match the low-rpm, high torque 455 engine in the 3900-lb. Est. I don't think they had this in 2011 however. I never saw a problem with the converter, it never went over 3 to 4 RPM slippage at WOT with it locked. Dr. Tranny helped for a short time and then the car became entirely undriveable. abs thank you for posting your experience here. Trans >AutoTcc >TCC Desired Slip > TCC Desired Slip AC Off vs. Gear Min Desired Slip AC On Use DoD Slip TCC Desired Slip DoD vs. Gear Desired Slip DoD Off Transition Desired Slip … Failing Torque Converter Clutch with Slippage - Could be your TCC Solenoid, Re: Failing Torque Converter Clutch with Slippage - Could be your TCC Solenoid, https://www.ecoboostperformanceforum.co ... 733.0.html. If choosing a torque converter for use in a street car, you might want to select a torque converter with a stall speed that is below the engine RPM at 70 mph, since this is where your engine will spend a lot of its time. Sep 16, 2013 #4. I agree that a manual transmission option would be great. Really bad shuddering under acceleration, etc. at this point, a solenoid code is issued because no more pressure is available to keep the clutch clamped as it should. Converter Slip Calculator. You don’t want to have to floor your gas pedal and wait a few seconds for your vehicle to move. I changed the transmission fluid (Mercon LV) at 63k miles back in 2017. Okay, so it sounds like you were able to identify a potential root cause. Giving Slip the Slip: Lockup Torque Converters and Split Torque Automatic Transmissions. From this viewpoint, it acts much like an automatic clutch. simultaneously to stay within desired gear, engine firing mode, engine torque range, and engine/vehicle speed ranges. If you shop at Amazon.com (for anything), use this link to support FordFlex.net! Multiple different problems, some transmission related, some engine related, all resulting in driveability issues. ... this is the difference between the fasted and slowest speed sensors. by SirHandyMan » Fri Mar 29, 2019 3:24 pm, Post At some point Ford modified the wiring to include a thick rubber insulator on the wires that extended beyond the edge of the intake manifold to prevent the chaffing. The TCM will add more pressure to the torque converter clutch if the actual rpm slip in the clutch is a lot bigger than the verter desired RPM when the clutch is engaged, until no more pressure can be added anymore. when max pressure is applied, … This very similar to what I experienced with my failure. This ensures a margin for application for the torque converter to take off. I believe that the drive train motion could be perceived as a "shudder" especially under high torque/high load conditions. An easy way to understand this is to consider 2 desk fans. Have the functions for Torque Converter Desired Slip time been added to T43? Since taking all the of the steps outlined above, I can confirm that the transmission has been running properly and the clutch working as expected. RPM TCCRAT. If the engine is not running smoothly and/or delivering consistent power, it can cause fluctuation in the "Desired" versus "Actual" torque converter clutch slippage along with a surging feeling. TQ TO TRANS AL- Engine torque delivered to trans, Duramax and Workhorse 35. If the engine is not running smoothly and/or delivering consistent power, it can cause fluctuation in the "Desired" versus "Actual" torque converter clutch slippage along with a surging feeling. If you are experiencing shuddering, also check your engine mounts. The fluid did not look dirty. » Thu Aug 29, 2019 9:39 am, Post ! Some electrical tape and some plastic wire loom may solve your issue entirely. Second, consider draining and filling the transmission a few times since you can't get all the fluid out with just one drain/fill cycle. In this case, TCC actual slip was erratic and excessive. We arent saying 10RPM of slip is bad, what we are saying is that seems to be the progression point of going out. RPM TSS_SRC. For Full Size Trucks/SUVs- Press and hold the tow-haul mode button for 5 seconds to disable grade braking to prevent downshifts during test. As the car goes down the track, if you are making too much power for the converter selected, the converter will slip, and you’ll need to run a tighter converter. car with 200 HP/275 ft.-lbs., 3.42 gear, and a 26 inch tire. Throttle Angle Actual; Throttle Angle Desired If it does go... let us know. Drivetrain model Adams and AMESim FMI co-simulation There has been careful selection and changes of design made on the optimum converter, making changes to the turbine, stator, and impeller. The low values enable the TCC to come on when applied in an almost imperceptible manner as the TCM can regulate the TCC duty cycle between the minimum and maximum values to smoothly engage the TCC using a controlled slip. INJECTOR RAIL PRESSURE DESIRED DM- Duramax 36. Smaller diameter torque converters are needed to provide more slip at idle. Thanks for copying the information from my other post here. RPM VBAT_FF. but my truck has 25k on it and 10k tuned.. so im thinking mines not on the way out and its got 20rpm slip. Turbine speed adjucted for chain ratio. Multiple different problems, some transmission related, some engine related, all resulting in driveability issues. Run the following tests for 3 operational modes: A. None TSS. In general, the desired stall speed should be 500-700 RPM below the engine RPM at peak torque. I did the trans relearn today with the ******* 275 tune. torque converter model is a proportional-integral-derivative (PID) controller that provides the normal force on the converter clutch based on the difference between the actual slip and the desired slip. When in 2nd, 3rd, or 4th gear, the Torque Converter Clutch (TCC) can be locked or partially locked when certain conditions are met. • Exhaust Gas Recirculation Valve Position-Actual (%) • Exhaust Gas Recirculation Valve Position-Desired (%) • Mass Air Flow (g/s) • Diesel Particulate Filter Soot Load (%) • Output Shaft Speed (RPM) • Trans. THROTTLE PCT DM- Throttle percentage- Duramax 38. This table allows the TCM to control Torque Converter Clutch slip during engagement. How ever this did happen right after I did the six 0 to 60 mph relearn runs. The knock sensor wire harness connector was loose. It ran pretty good. I was running the KEM 250 and 310 tunes. Randall explained that, with the TCC duty cycle at around 50%, the TCC desired slip should have been modulat- ing between 40-80 RPM and the TCC actual slip should have been within 10% of that. I always thought it wasn't supposed to go over 10. As you can see I was experiencing multiple issues, all of which were exacerbating the clutch slippage and/or shuddering issue. Traction Control Basics + Setup. The third digit of a traditional four character GM ‘alpha’ torque converter code is meant to indicate the type of lining used on the converter clutch. I drove only sticks for years by choice. by Silver Flex SEL. HP Tuners has had this for a while now and the only way to dial in an aftermarket converter, especially multi disc properly. I would be surprised if this is your issue at 81,000 miles. by SirHandyMan » Fri Mar 29, 2019 8:27 pm, Post Trans >AutoTcc >TCC Desired Slip > TCC Desired Slip AC Off vs. Gear Min Desired Slip AC On Use DoD Slip TCC Desired Slip DoD vs. Gear Desired Slip DoD Off Transition Desired Slip … 1=Transmission Select Lever reverse position input switch indicates that reverse is selected. In one example, torque converter slip control is improved in a variable displacement engine by processing a raw torque converter turbine speed signal with a moving average … An exception to this theory is if the transmission/converter is equipped with a lock-up feature. A torque converter works by exchanging power, through fluid motion. I just checked it yesterday and it was right at the full indicator with the transmission properly warmed up. At full throttle, the brakes won't hold beyond 2300, so the actual stall is unknown.
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