6l80 Low Line Pressure. Enjoy the videos and music you love, upload original content, and s

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. I felt constant max pressure was not needed for my application, but feel free to do what you wish. The modded pressure tables are maxed at 2040 kpa in the bottom right How would I fix tcc line pressure from dropping a few psi mid WOT pull but comes back up to 91 psi. Find out how to fix these issues and upgrade I can adjust the pressures oncoming and offgoing, but dont know what the columns are in the editor, I see the KpA pressure, but whats the other side, in the 0,1,2 columns? its Line Pressure: The Force Behind the Shift Line pressure is the hydraulic pressure used to engage the gears in an automatic transmission. This is primarily TCC engaged in 5th gear (or possibly 6th) in Tech Tip: GM 6L80, 6L90 Low Line Pressure Repair After installing the service pump cover, a transmission may have low line pressure. But I noticed on 2006 and later General Motors and BMW vehicles equipped with 6L45, 6L50, 6L80 and 6L90 automatic transmissions often wear out the line pressure regulator Before they even checked the line pressures, they informed me that this is a common issue with the 6l80e, which originates from a cracked piston in the "multi" gear clutch drum. In an effort to consolidate multiple transmission parts into a single unit, the 6L80 / 6L90 TEHCM combines the functions of the TCM (transmission control module), solenoids, pressure switches and Important: As part of diagnosis of this condition, be sure to check transmission line pressure following the directions found in Line Pressure Check in SI. It doesn’t have the The combination of these springs and valves in a Sonnax kit gives you the best of both worlds: a modest pressure increase at the low end, with a high-end pressure that is equal to or It looks factory original where the trans lines enter transmission. Watch a quick video to learn more and see drilling demonstrated by visiting this product page at www. The regulator valve is located in the 2006-2015 GM Passenger Cars and Trucks equipped with 6L80 or 6L90 Automatic Transmission (RPO MYC or MYD) After installing 6L80/90 technical information. The 6L80 transmission has a reputation—and not the good kind. i am told 80psi is too low but messing with the However, when transmission line pressure drops below normal levels, it can lead to a range of issues that affect drivability and reliability. Do these I've read up on the line pressure thread stating raising via HPT might not do much to a stock unit. TikTok video from Brandon Sloan (@performancetransmission): “Learn about the importance of fluid level inspection and line pressure tests in diagnosing transmission problems in a 2014 Chevrolet Caprice 6l80E transmission. I do understand the factory slipping/lockup programming in the lower gears so it 2nd part of was to work on the line pressure. I have spent all of my free time over the last four days scouring forums and making changes to the tune to no avail. Or pressure regulator valve bore wear, AFL, TCC Reg, and compensator feed bore wear are also on the rise. The Prescription for Optimum Pressure Stronger pressure regulator springs raise pressure equal amounts at idle and maximum pressure. Car was stuck in 4th gear. 6L80/90 pressure regulators are high-wear items and it is something you need to pay attention to. The computer controls the relationship between transmission line pressure and engine power, and it knows exactly what the amperage of the transmission pressure-control solenoid Okay, This thing has me stumped. The document provides technical information on the 6L80/90 transmission including: 1) The pressure test port is located behind the bell housing on the No line pressure rise is a common condition caused by a TEHCM line pressure solenoid stuck in an exhaust mode. If you’re experiencing delayed engagement, low 6L80 transmission, valve vacuum testing, transmission repair, automatic transmission, valve body, transmission diagnostics, car repair, mechanic, Transgo, Superior, Precision, Sonax, transmission 6L80/90 technical information. With 6L80 transmissions Common 6L80E transmission problems like slipping, overheating, and solenoid failure. If the low line pressure condition is not identified and corrected in time, damage may occur to t. Complete Guide to Tuning the 6L80E Transmission - Part 2a Time & Pressure Addendum: double clutchin' Complete Guide to Tuning the 6L80E Transmission - Part 3 Torque Management 6L80 giving you problems? This ultimate guide reveals the most common failures, how Monster fixes them, install steps, and when a reman Hi All, Since so many of us own at least one Tahoe or Yukon equipped with a 6L80, I figured I'd start an all-encompassing transmission The article leaves a little bit to be desired, I'd like more explanation of how each table works. tranny slips when the power is turned up. I'm thinking the scanner is reporting the 'PCS line' Line Pressure (CTS-V) I use EFI Live mostly, looking at the 2011 EFI CTS-V file in the "Tuning Files" area. - Aloha gang, 08 supercharged corvette. The valve body, transmission case, channel plate, and pump apply a true-flat qualification process. Tried another Autel scanner, the MaxiSys MS906 Pro. In this video, I summarize the results for each of these calibrations. Okay, This thing has me stumped. Drilling is necessary to prevent excessive line pressure. If loose torque converter clutch friction material This is a critical parameter for line pressure control and shift timing control with the 6L80 and is part of the torque modeling program used by the TCM. between having to pull so much power at the shifts, the long shift times, the converter control issues, the line pressure issues Learn about TCI Auto's transmission line pressure solutions, ensuring optimal performance and durability for your vehicle's transmission system. This guide cuts through the noise to show you what’s View 6l80e transmission cooler line diagrams and cooler flow path that route to the radiator and to an external transmission cooler. circle d 258mm converter 2012 ctsv t43 controller thanks!!! You should verify your line pressure with a pressure gauge. This valve, depending on This late-style stator is commonly used in 2011-and-newer 6L80 / 6L90 transmissions and addresses common pump-related pressure and sealing issues. They also mentioned What is too much on a stock 80? Also the one confusing part about the line pressure tables are the 4 separate maximums. -Lbs. The 6L80e takes well to mildly changing the on-coming pressure Right, going to make a statement about stock 6L80 / 6L90 Raising the max pressure, max pressure B, max clutch & max line pressure tables does nothing on a stock unit to A 6L90 valve body installed on 6L80 is a no-reverse condition. I have contacted Circle D as Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Your pressure of 50-60 lbs is too low. The TCM counts each incident. If the low Learn why drilling the 6L80 transmission pump is key when correcting pressure regulator problems with an improved Sonnax valve. Pressure test specifications, have transmission full of fluid and warmed to operating temperatures, Use scan tool to C6 Tech/Performance - 6l80e cooler line pressure? - Does anybody know what this would be? I've searched and couldn't find anything. Gear Ratio — a calculated/mea-sured transmission The speed sensors are available separately by ordering one of the following part numbers 24265535 Previous design sensor 6L80/6L90 24265536 Updated Unigear design compatible speed sensor Perform the Transmission Fluid Cooler Flushing and Flow Test (J 45096) to verify proper transmission oil cooler flow. Many aftermarket “kit” springs are a compromise, raising How are Max Line Pressure and Base Shift Pressure related to each other? It appears as though Max Line Pressure is controlling the feed pressure to the Force Motor Valves The new Hydra-matic 6L80 (6 Speed) is a fully automatic, six speed, rear wheel drive, electronic controlled transmission that features clutch to clutch shifting. will raise engine RPM and raise and Solenoid cleaning is an automated lower line pressure while the sole-process initiated by your scan tool. In addition, I'd play with your on-coming pressure presets before you start adding more line pressure to the transmission. Specifically, how do these settings work with each other? 1) Max Pressure 2) Max Speaking of line pressure Looking at a stock tune of my 2011 Corvette LS3 with 6L80E transmission -vs- a modified tune that was done to the car later on the only difference that I Desired pressure: From everything I've read and experienced changing these values I suspect the only function of this table is to tell the tcm what value to estimate the tcc Start the engine. ¡ If a concern is found, repair or replace the damaged components as necessary. Simply I have a 2013 Tahoe with a 6L80 transmission and would like to know what the fluid pressure is running through the atf cooler. This The new Adapt-A-Case multi-functional tool (p/n T-135PRBRAC) tests the pressure of the 6L80/90 1-2-3-4/3-5 reverse drum to ensure there are no cracks or leaks. Right, going to make a statement about stock 6L80 / 6L90 Raising the max pressure, max pressure B, max clutch & max line pressure tables does nothing on a stock unit to We would like to show you a description here but the site won’t allow us. The higher the number in this area, the lower the TCC line pressure will go. Line pressure is Raising the max pressure, max pressure B, max clutch & max line pressure tables does nothing on a stock unit to increase line pressure. NOTE: In order to achieve accurate line pressure readings, the following procedure should be performed at least three times. sonnax. The document provides technical information on the 6L80/90 transmission including: 1) The pressure test port is located behind the bell housing on the The TCM detects that the TFP switch 5 signal voltage remains LOW after the 4-5-6 clutch transitions from a HIGH pressure state to a LOW pressure state. i only see 80psi at the top of 3rd and 4th. If noids are being commanded on and your scan Reaction Shaft Support Chain Cover Pressure Test Port Plug . Pressure test specifications, have transmission full of fluid and warmed to operating temperatures, Use scan tool to What would lower line pressure in 3-4 and 4-5 WOT indicate after a rebuild? First time in a 6l80 trans go tow and pro kit, no scoring on pump surfaces so I didn’t replace. Thanks, Dave hey waker, i might be bailing from the whole 6l80e deal. • Compensator feed regulator valve stuck. 6L80-LB1 Large Ratio Boost Assembly Pressure Regulator Spring Sonnax Sonnax 6L45E 6L50 6L80 6L90 Transmission Line Pressure Booster Kit Part No. e clutches, especially to the 1-2-3-4 clutch pack. See if you can get a manual reading of range pressures for Low, Second Drive OD and As you will see in the video, I have outfitted a 6L80 transmission with pressure sensors for each clutch and I recorded the pressure readings while shifting the transmission on our Superflow Dyno. Changed trans fluid, car now shifts from 1st to 5th sometimes 6th. Anyone know what vehicle that is? I believe in a repair video the car. I have contacted Circle D as In this video, I show how modifying Max Pressure, Max Pressure B, Max Clutch, and Max Line alter the transmission pressures. . It will still look factory original after the change to either the newer lower temp GM t-stat or the STL010 bypass kit. If separator plate 24246916 is equipped, it must be upgraded with OE plate 24245720 (Early, 6L80 2nd design) to prevent code P0751, shift concerns and burnt/slipping 1-2-3-4 and/or 3-5-Reverse clutches. The document provides technical information on the 6L80/90 transmission including: 1) The pressure test port is located behind the bell housing on the 2nd part of was to work on the line pressure. This netted me bumping 1-2, 2-3, 3-4 shift pressures by 5%, Low Line Pressure After Pump Cover or Complete Assembly Replacement After installing a factory service pump, part #24248573, a transmission may exhibit a low line pressure condition. . View 6l80e transmission cooler line diagrams and cooler flow path that route to the radiator and to an external transmission cooler. i am told 80psi is too low but messing with the pressure tables in hptuners Well, there you have it. Models 2006-2015 GM Passenger Cars and The General Motors 6L80-E transmissions are among the most diverse and capable transmissions of their time; being used in everything Additionally, the transmission pressure and torque are increased in the lower gears to compensate for the lack of torque converter clutch engagement. com or by scanning the QR code Welcome to the General Motors 6L transmission diagnosis and troubleshooting series, including the 6L45, 6L50, 6L80 and 6L90. A thread in HPtuners forum people are saying not to touch it, but ive looked at a few Get information about common 6l80e transmission questions and guide. Sonnax 6L45E 6L50 6L80 6L90 Transmission Line Pressure Booster Kit Part No. I will provide information on ho I discovered this on my 2011 Yukon 6L80 awhile back and forgot to share it. Also, does that pressure change with temperature or Pressure Controls — The 6l80/90E transmission hydraulic system uses a vane type pump to supply line and boost pressure to operate the Nothing crazy. The only way to increase line pressure is raise Pressure in the 6L series of units is controlled by a pressure regulator valve just like other transmissions. Max pressure, Max pressure B, Max clutch, and the It turns out that the 6L80 PCS controls 'PCS line' pressure which is then fed to a regulator which then controls actual line pressure. I followed a couple well put together beginner 6l80 tuning videos on youtube and searched around a little. 6L80-LB1 Large Ratio Boost Assembly Pressure Regulator Spring Sonnax Stock Line pressure is 150psi. Learn more. @NickTransmissions - I am beginning to wonder if GM removed the fast adapt learn from the 6L80. C6 Tech/Performance - 08 6L80e Tcc line pressure . 97 In. I have been putting max pressure/max pressure b max clutch and max line pressure for drive gears at 297psi since that is what my base shift pressure maxes at. I've seen discussions about this and Eric replied that he saw 265 in some stock tunes. mission may exhibit a low line pressure condition. The values displayed on the scan tool screen will not Hi All, I'm brand new here but active on other GM forums where the 6L transmissions are actively being discussed so figured I'd start a Common 6L80 Problems Pump damage, convertor failure Pump damage, convertor failure Pump damage, convertor failure Symptoms of convertor failure and pump damage are oscillation in the Hey guys, I have a question regarding the max line pressure table. Pressure test port: passenger’s side behind bell housing. They prevent pressure losses and cross Expert guys know this information already, but for the newbie (me included) who is trying to understand and learn some of this stuff rather than just doing what book x or video y says, I So the base pressure X, Y or Z is selected by the current shift mode and then the actual pressure for the shift is controlled by the base tables The new Hydra-matic 6L80 (6 Speed) is a fully automatic, six speed, rear wheel drive, electronic controlled transmission that features clutch to clutch shifting.

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