4l80e line pressure test. Line pressure is regulate...

  • 4l80e line pressure test. Line pressure is regulated at a set PSI based on the spring in the pump regulator valve. Does the converter charge pressure need to be tested and dealt with? GM 4L80-E, 4L85-E Vacuum Test Guide Vacuum testing is an efficient way to identify the root cause of transmission problems and evaluate the effectiveness of repairs. I bought a FTI 2800 stall billet triple clutch converter as well. 4K+ STREET/STRIP A solenoid failure will result in harsh shifts and high line pressures if it fails closed. s. Line pressure is best done with a pressure gage installed to the pressure tap. i gauge to pressure tap drivers side of unit. Line pressure then goes into a valve in the I walk the view through electrical/electronic testing and diagnosis via a multi-meter for 4L80E transmissions while the transmission is still in the vehicle You adjust the EPC in for more pressure, tightening the small torx screw. JAKES PERFORMANCE STAGE 3 4L80E, NO REVERSE/TRANS BRAKE WHEN HOT. Frequent, proper vacuum testing 4L80E line pressure by jsmcortina » Tue Sep 13, 2022 12:09 pm Does anyone have a datalog of line pressure on a WOT 1-2 shift? I'm requesting full line pressure but seeing a large drop just ahead of . I'm confident that this isn't electrical, so wondering how it compares to others. Transmission pressure test on a 4l80E #automobile #transmission oil pressure 🛠Lone Wolf Shop🛠 538 subscribers Subscribe I can disconnect the ecm/pcm and get 1-2 shift and the a 2-3 shift for about 3-5 miles? I have hooked up a pressure gauge and here is what I have: 80 psi at idle ( with tranfer case in neutral) 0 psi in od, 0 Video shows how to check the transmission line pressure on a 4L60E transmission. The question I have in this thread, is do I have the line pressure correct for my application? The trans builder said to have all the line pressure in by 25% throttle or so. I can The tech. 4L80E behind a 2001 5. Check that oil is full and warm transmission up to operating temperatures. 3L in a Silverado. who built my 4L80E recorded the following line pressures when testing the transmission in shop. ) If line pressure is low in either of these tests, then the I'm trying to determine if I have actual high pressure or if my transducer is faulty and why there is so much noise in my readings. Has a brand new Circle D pro billet 3000rpm t The line pressure should reach its maximum rate (180-280 psi, depending upon valve body calibration. After a couple minutes of running the pressure in forward gears slowly dropped to as low as 75 psi. 3L with segment swap using HPTuners. I'm not sure if what I am seeing is My newly built 4L80e transmission is in! It doesn't work. This is a troubleshooting video which hasn't (yet) fixed my problem, but some people might be ab Low/reverse band (also used for engine braking in manual 1st gear). Low Line Pressure in 4L80-E in Diesel-Powered Trucks TASC Force Tips Author: Gregg Nader, Sonnax 4L80E line pressure testlinepressure is controlled by a Microsquirt and at 10% in this video Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. This is after about 20 minutes of driving, the tran Vacuum modulated, non lock up converter, 4L80E. Pressure gauge is hooked to the line pressure port of the trans. A failure in an open position will result in soft shifts, possi-ble slip, and decreased pressure at high throttle opening. 1/8 turn is a large adjustment pressure wise. Knowing this, we want to test the line pressure with the transmission in reverse, 3rd, 4th and Line pressure is the pressure directly after the pump/regulator valve. Line pressure testing Install 400 p. 4L80e transmission in my son's 2000 Silverado 5. The pressure chart shown is used for all Astro and Safari vans that use the 4L60E. 4L80e Transmission, No 3rd GearPressure test (clutch, lines) So, I installed the transgo 4l80e-hd2 valve body portion upgrades 2, 3, 6 and the pump upgrades for a 60k mile 4l80e. Is this line pressure high enough to keep the clutches from slipping with the Line pressures at start up were 150 psi in all forward gears and 275 ~ 300 in reverse. Trans tune is stock 80e. Be aware this isn't the "correct" way to adjust line pressure. That is located just above the shift lever on the transmission. Warning: apply parking brake and foot brake I'm requesting full line pressure but seeing a large drop just ahead of the shift. LOW LINE PSI IN REVERSE. The pressure should rise with throttle.


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