700r4 line pressure test. May 12, 2006 · Usage a test gauge to be sure.

700r4 line pressure test I have found a used one but would like to find a new one. It bounces Jun 26, 2017 · Hi I recently rebuilt the 700r4 in my 3rd gen camaro. Click here for Pressure test procedures One area completely avoided and looked past by most entry level enthusiasts is transmission pressure. I pulled it out, put in new clutches steels gaskets etc, new TV cable, added a transgo TV correction kit to the valve body and took it for a test drive. The Pr. 2. V. Since then it has shifted even worse and knew I had an issue. Then start moving it back until pressure increases 2 psi -- that's it, just 2 psi. Jan 21, 2009 · Period. I previously fitted a 2004R about 18 years ago, from BT Overdrives and that was a strong build, which had line pressure of 300psi. The change in pressure was in the last 1/2 inch of cable travel. ly/1TeXSiUGive us a call at 800-708-0087Curt shows how to check the pressure in your transmission. TH-350 or TH-400) it is imperative that you follow the TV Cable bracket fabrication instructions. One thing that Tony talks about is blocking the line bias valve. 3 or 4 different low/reverse boost valves were used. This blocks the "line bias" valve and improves shift firmness above 1/2 throttle. However, when I disconnected the TV all of my pressures increased to full TV even though I didn't pull the TV cable to it's WOT position. Leave the spring in place. all taken at 1000 rpm. I installed the full Transgo kit in the VB and the 700LU for converter lock up. This will fool the gearbox into recognizing low throttle, and it will run low line pressure. Feb 13, 2025 · 200-4R, 4L60 Line Pressure Booster Kit Part No. Anyone know what it should be? - My 300 psi pressure gauge just arrived today from Bowtie Overdrives. Jul 24, 2004 · That is the line pressure port for the trans-will take a 7/16" socket. Apparently, the line bias valve bleeds off line pressure above 1/2 throttle. It read 130psi at idle and pulling the TV cable got it to go up to 150psi. Jan 21, 2013 · Tech Resources Transmission Article GM Vacuum Test Guides Vacuum Testing. -75, 3rd-75, 2nd-180, 1st-180. The TV cable and the pressures it sets are a pretty wide range depending upon model of the 700R4. D. Nov 20, 2011 · 700R4 Low Line pressure Did you try increasing the Engine RPM to see if the Pr. Dec 20, 2024 · What Is a TV Cable in the 700R4 Transmission? A throttle valve (TV) cable is a critical component in vehicles equipped with certain automatic transmissions, like the 700R4. 7. Still holds 1st forever and wont shift past 2nd. Upshift signal is supplied by output shaft driven governor. Each range, except Park and Neutral, should be checked under three conditions: Slow idle, fast idle, and wide open throttle. Higher when connected. This test is important for diagnosing transmission issues and ensuring proper functionality. You're going to use the black plastic adjuster to set TV pressure at idle (with a warm tranny). Transmission Valve Body. 890 long works well. I tell people the pressure gauge should be like a tach, throttle moves, gauge needle moves. Jun 14, 2013 · C4 Tech/Performance - Rebuilt 700r4 high line pressures, Help! - Hi guys, I've just popped over from the c3 section with a question on 700r4's I've just rebuilt a 700r4 for my Dad's Studebaker and i've got 200PSI line pressures in all gears at idle. I think the pictures on their instructions are potentially misleading. GM used at least 5 different main boost valve sizes from a . I understand that for the adjustment to be correct, the plunger needs to be flush with the bushing at WOT. It's like the switch does nothing. I drove it down the road to warm the tranny up and it was shifting the way it should. 422 boost valve needs the line bias valve completely blocked to reach much over 200 psi in OD and D shifter position. as long as the cable is coming out enough to get a wot 2/1 as previously described your fine. I have no idea what they are. (This trans has a warrenty) The problem I'm running into is I can't find any specs for a STOCK 700r4 from an 89 Chevy 1/2 ton 4wd anywhere. The pressure test port is the worst place, there is no fluid flow. I was just getting static readings. More Information from Tony: 700 trans have NO modulator, never did. This is a quick video on how to test line pressure on a 4L60E. Blocking it prevents the bleed off and maintains higher line pressure which I would imagine produces faster firmer shifts. Jun 29, 2021 · 700r4 line pressure question i did a line pressure test on my 700r4 tonight. But then in reverse, pressure @ 1,000 is only 110. TCI recognized the need for a product that eliminates the chance of transmission failure and produced the Constant Pressure Valve Body. Any of the above pr Jul 13, 2016 · This bumped the line pressure up some and provided for the proper pressure rise (at least at 1100 RPM) and TV cable adjustment. Sonnax hydraulic line pressure booster kits contain stronger pressure regulator springs and large ratio boost valves designed to work together to provide progressive pressure increases as driving conditions become more demanding. I suppose it could be due to the low pressure since it utilizes a pressure switch. Next we did a "full" test with TV cable disconnected and pulled all the way out ( with string and tied in position) foot on brake and 1000 rpm's. You need to get some guides on setting these things up. The readings were taken @ 1000 rpm with the TV cable connected. Readings were in pounds: P- 75, N-75, R-120, O. Line Pressure Idle Drive 58-65 Max 180-200 Idle Reverse 120-125 Max 280-305 Trans Basic Operation: The 4L60 (700-R4) is a RWD 4 speed unit with TCC. My ATSG manual for my TH400 has them but I dont have a ATSG manual for the 700R4. Aug 16, 2001 · C3 Tech/Performance - 700R4 line pressure readings. EASILY DIAGNOSE YOUR VEHICLE: The ABN Engine Oil Pressure and Transmission Fluid Diagnostic Tester Tool Kit – 500 PSI / 35 Bar Gauge, Hose, and Adapters makes diagnosing a possible major engine, oil pressure, or transmission fluid pressure problem easy on most vehicles including both American domestic and imported cars and small pickup trucks Oct 6, 2024 · Yes pressure was taken at idle, never tried it In reverse. These readings should be within 3-5 psi. Transmission Identification for 700R4-- Tony's 700R4 pages. Jan 10, 2014 · In this video I demonstrate how to measure the line pressure inside of an automatic transmission Dec 11, 2008 · Hi, I plan to do a pressure test on my 700R4 and was wondering if anyone knows if the size of the port is 1/8 pipe or some metric size. Oct 26, 2024 · I am trying to find a replacement for the test port plug on my 700R4. The more conservative version employs a silver spring that maintains line pressure between 190-210 psi. Whatever you do don't start the engine with the port plug out or you will hose the shop down real quick with ATF. com/setti Nov 4, 2005 · Oil pressure can be checked with the transmission in the vehicle, using a 0 to 300 psi pressure gauge. I don't know what a typical high performance converter in a street driven car will do but it's not insignificant. I installed the TV cable etc. in all Gear ranges I'd look at the Pressure Regulator Valve assembly in the Pump. One more time, you need to connect your pressure gauge. I took it for a road test and only have 100psi at WOT. I am very pleased with the shifts (transgo kit & larger boost valve). After the rebuild I had problems with the vehicle shifting very late (4000 rpm) under light throttle. The second is vehicle symptoms such as clutch slippage, reverse chatter and 3-4 clutch failure. BTE recommends low/high gears line pressures of 225-275 psi for most powerglide configurations, and we have pressure springs available for all pressures. Transmission Constant Pressure Valve Body 1. Recommended. From what I can gather my readings are rather low. Aug 1, 2012 · The problem with installing a rubber line as opposed to a hard line is that the vacuum and heat from the powertrain will cause the rubber line to collapse, trapping the vacuum at the modulator. tv and as soon as I pull the cable I get a rise, BUT then it falls back down. com Page 4 Dec 10, 2004 · I looking for a specification list of pressure line values to go by as a guide line. You may also need a transmission pressure regulator if you need to adjust the pressure. In manual 1st and 2nd, pressure @ 1,000 is still just 90 psi. 575 Mar 1, 2005 · I decided to do a line pressure test but did not have the proper gauge. Jump to Latest 200-4R/700-R4 Pressure Test Forward Pattern - P R N OD D 2 1 Park Min 90-110 Max 190-230 Reverse Min 95-120 Max 200-300 Aug 18, 2016 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Jun 20, 2022 · The constant pressure valvebody kit comes with two different line pressure springs. Since a transmission pressure gauge normally goes to 400psi, that gives a service factor of almost 3. Thanks, John 700R4 Line Pressure Port Size May 7, 2008 · high line pressure, 700r4. I would guess that your maximum line pressure should be in the 170-185 range. It only takes about 10 minutes of driving to completely ruin a 700R4 due to line pressure. Philosophy: At VEHICULOS, we believe that every single automotive part plays a crucial role, influencing the overall performance and safety of the vehicle. should be fairly steady when testing the max/1500rpm range, the low/Idle range may fluctuate a little more but, still be easy to quickly read. Apr 4, 2021 · Sonnax 700R4 4L60 Line Pressure Booster Kit Compatible with GM This kit includes Large Ratio Boost Assembly Stronger Pressure Regulator Spring 2 O-Rings Sonnax hydraulic line pressure booster kits contain stronger pressure regulator springs and large ratio boost valves designed to work together to provide progressive pressure increases as driving conditions become more demanding. Minimum TV, in P, N, D, 3 @ 1,000rpm, pressure is 90psi which is fine. Keep in - Customer: I have a 700R4 transmission, which port is the pressure, port the upper or the lower? I am also installing an external transmission cooler and a mechanical transmission temperature gauge so I need to know which line to put the temperature sending unit in. com FREE DELIVERY possible on eligible purchases Mar 2, 2016 · A worn OE pressure regulator valve can be detected in two ways. After the installation and adjusting the TV Cable with a pressure gauge I found that the main line pressure is bouncing between 45-85 psi at idle with the trans in park. Jan 9, 2016 · The line pressure needs to stay ahead of the applied engine torque and it should hit the maximum reading quickly (less than a second) when the pedal is pressed rapidly. Even slightly off, especially if you have a heavy foot and like to manually shift it there will be a lot of clutch in particular and band wear material in the oil. A race car with a very high stall converter will have the pressure approaching the internal line pressure. It plays a key role in managing the transmission’s hydraulic pressure and shift timing. Connect pressure gauge hose fitting at pressure plug bore in case and place gauge in vehicle so it can be seen from the driver's seat. Jan 26, 2011 · Personally challenged to set the TV cable adjustment for proper line pressure and shift kick down, Murray and his classic GM muscle were the perfect test bed to try out one of the new TCI Constant Pressure Valve Bodies for 1987-92 GM 700R4 transmissions. Jan 8, 2018 · Hi all. With a couple -AN fittings you would have exactly what you are looking for. Did you replace the TV spring only? Nothing else disturbed, Pump Valves, Valvebody etc. The line pressure test just doesn't seem to be working like the book states. increased any? With Low Pr. Look at your fluid level ! Add half a quart and see if you notice any pressure difference. Not that sure with pressures on the 700R4, as I never fitted this trans. Aftermarket main boost valves run up to . There is no change when the tv cable is pulledor engine RPM increased. A note that the TH700R4 is quite sensitive to the TV cable adjustment. Before test driving I hooked up a pressure gauge and got the readings. It had a 700R4 filter in it so I added the CK spacer and a new 700R4 filter. Most of the ranges occur at . sonnax. 4L60, 4L60-E, 4L65-E, 4L70-E Low line pressure; Low line rise; Low Reverse boost; 2-3 Shift feel poor; Aug 9, 2019 · You need to document your line pressure in neutral and in each gear. I was shifting it manually and all felt fine. The 700-R4 (as well as the 200-4R and the 4L60) uses a cable (called Jan 10, 2024 · Line pressure idle-full pull P 90-180 R 140-270 N 90-180 4 90-180 3 90-180 2 150-150 1 150-150 No line pressure increase in 1st and 2nd Rebuilt and transgo shift kit. PERFORMANCE High Performance TRANSMISSION Parts LINE PRESSURE BOOSTER KIT 700R4-LB1 Instruction Supplement ©2012 Sonnax Industries, Inc. 471 boost valve. There are no numbers or any other identification on them. Much data is on line, just GOOGLE for it. Aug 17, 2001 · C3 Tech/Performance - I performed a pressure test on my 700R4 today and called Bowtie Overdrives to confirm results. The actual rebuilt itself went smoothly, but upon reaching the last step of the process before I can actually test it out, I ran into issues with the TV system. It is also not recommended to run anything high pressure or flamable into the passenger Elevated Pressure Main Pressure Regulator Spring 77917-08 Erratic line pressure, Low line rise, Clutch slippage, Excess pump noise, 3-4 Clutch failure Oversized Pressure Regulator Valve 77917-06 77917-TL, 77917-TLC Low line pressure, High line pressure Pump Slide Pivot Pin 65797 5/Bag Erratic line pressure Pump Spring Spacer 77917-RV 10/Bag Jan 21, 2009 · it also wouldn't hold o. I finally tested the line pressure and found that at 1k rpm in park I had 180lbs instead of 80lbs, and as I moved the tv cable pressure didn't change. Less than standard line pressures will cause clutch and band failure in high performance applications. It does But, in 2nd gear the pressure bounces at idle and with an increase in rpm. if the 2/1 at wot is cool and it shifts too early or too late at wot Learn how to properly perform a line pressure test on a 280zx with a 700r4 transmission. When in R or 1 - 2 shifter positions the secondary boost valve kicks in. Feb 12, 2017 · Make sure to have instant pressure rise with the throttle movement, then go from there. 5. Then lock it down and test drive the car. Jan 1, 2013 · I have several pressure switches for the 700R4 transmission. So I bought a pressure gauge, warmed the motor up and obtained these readings: all are with brake applied at idle Aug 20, 2010 · Small boost valve will provide low main line in forward gears. May 28, 2011 · Reverse always has a higher line pressure. Apr 21, 2019 · Get a drain plug kit, put the sender in place of the drain plug, it will be the same 1/8 pipe thread. May 17, 2017 · With the TCI Automotive Constant Pressure Valve Body kit you can also fix one big pain with the 700-R4 transmission: the TV cable. - Here are the results obtained based on the BTO directions provided with the 300 psi gauge: _____Pressure @ idle,_____Pressure @ idle,_____Pressure at high idle, _____T. Our pressure regulator Apr 23, 2015 · Wilwood lists average working pressure for disc brakes to be 900-1200psi. Jul 27, 2011 · except for neutral, the rest of your pressure readings look to be ok, id check the boost valve and pressure regulator valve and make sure that they are not stuck or worn out, with the symptoms your explaining. What you do is move the adjuster forward until the pressure drops and goes down no further. Sep 5, 2010 · I recently put a 1406 edlebrock on, so bought the proper tv adapter, and when I was setting up line pressure, I noticed that I'm running good pressure at min. . May 6, 2009 · I know this has to have been covered before, but I haven't had much luck finding a thread that discusses the correct pressure reading when installing a test guage on a 700r4. I used an old oil pressure line and fittings hooked to a 300psi gauge that I took off the back up compressor. Man 3rd is 100. Some have one terminal and some have two. Test the line pressure of the transmission in all modes of operation. TV Cable Connection: If you are retrofitting your 700R4/2004R transmission in place of a different model transmission (i. P 80 R 125 N 80 D 80 3 80 2 125 1 125 I have a . I have talked to Steve Holmes at BTO about this but I need to call him again for clarification after I run some tests. Even when driving the pressure is 150. 700R4-LB1-IN 01-09-12 800-843-2600 • 802-463-9722 • F: 802-463-4059 • www. Once you verify line pressure and line rise are normal in all gear ranges, you can also use the gauge to check the individual clutch apply circuits by connecting at those test ports. The pressure should rise immediately with throttle movement. Were talking 125-175/200. The cable felt pretty firm. d. I then proceeded to put a Fairbanks shiftkit in it. It can make tuning so difficult and can effect the dur Dec 27, 2012 · Hi all, I just finished rebuilding a 700 R4. Jan 10, 2023 · - A line pressure test would come next. Like Park: 80 psi Reverse: 90 psi and so forth. 4L60, 4L60-E, 4L65-E, 4L70-E Jul 5, 2022 · I noticed my 700r4 shift perfectly smooth (and firm) the first 30minuts of driving. Feb 26, 2021 · Clean Up Your Shifts with Sonnax Line Pressure Booster Kits. Reconnect the cable, observe the pressure. Inconsistent pressures or lower than expected pressures can indicate an internal leak or broken seal. Decided to hook up a gauge and check the line pressures per the manual. Abnormal pressure readings can indicate problems such as worn or damaged clutch plates, malfunctioning valves, or leaks in the system. May 5, 2017 · Pressure tap in on the drivers side it is for reading regulated pressure. The 3-4 is always perfectly smooth Anyone thoughts about it? - is this Jun 1, 2008 · OK I went to do the line pressure test today to see what it was reading. p/n/od/d : 70 psi (65-75 normal) Reverse:115psi (108-123 in this thread in this sub-forum in the entire site Nov 24, 2004 · I purchased a TV kit and a converter lockup kit from Bowtie Overdrives. perfectly. I have a transmission line gauge kit but it doesn't have anything to reference to the line pressure of a 700R4. So in summary, I am wondering about the pressure when I pull the TV cable all the way out. All I did to the pump was seals and added . Example: Oct 25, 2013 · I did before work pressure tests this morning and got some troubling results. facebook. Why is a 700r4 pressure test important? A 700r4 pressure test is important because it allows mechanics to diagnose potential issues with the transmission system. My current one is rounded Aug 1, 2018 · About this item . Man 1st and 2nd is and 4L60E’s) line pressure is controlled by the pressure control solenoid using a PWM amperage signal that varies from 0 amps to 1 amp. 471. Mar 14, 2011 · Mainline pressure should be checked in each range: P, R, N, D, 3, 2, 1. The next best place would probably be the output cooler line, that will read the temp of the fluid leaving the torque converter, that will be the hottest fluid by far. As a result, it will slip and burn clutches. I just got done building a 1988 700R4. The first is a dynamometer test that reveals low line pressure during boost conditions (look for 50-100 psi less than specified in Reverse). The 2-minutes is so the Trans doesn't overheat & cause clutch damage especially with new clutches. In Mar 27, 2017 · Hello everybody, maybe someone can sort this out for me: I did a complete rebuilt on a 700r4 with a brandnew valve body and the 700r junior shift kit from Probuilt automatics. This is the spring we chose for our street-driven transmission. N is 110. At 65mph, I would expect the rpms to raise when I flick the switch off, but they don't change at all. Line pressure rise was ok (from 75 to about 185 psi), but at throttle more than 50% upshifts stagged. Feb 16, 2021 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Jun 5, 2006 · main pressure of the 700 is a combo of PR spring , 2 different boost valves and the line bias circuit. ? Todd Transmission line pressure testing is also a great way to diagnose the internal condition of a transmission. Upon test drive I found it slip at WOT 1-2 shifts and to go in and out of OD while cruiseing down the road. 1. May 21, 2008 · I have a 1988 700r4 that shifted extremely quick - in OD by 35 mph under easy acceleration. TV cables control line pressure, shift points, throttle downshifts, and detent Sep 11, 2016 · Slipping clutches due to low line pressure will cause the fluid to heat up. Low line pressure upon engagement; Required. 3. at 'minimum' TV cable. Here is cold and operating temp pressures. Mar 4, 2016 · C3 Tech/Performance - 700R4 pressures, help transmission guys - In adjusting the throttle valve cable I hooked up a pressure gauge to ensure the line pressure would increase the moment ANY throttle was applied off idle. Have it towed to a trans shop before it needs a $2000 rebuild. How should the gauge be responding? Feb 22, 2019 · Normally the pressure is quite low, 20-30 psi, but if you stall the torque converter against the brakes it will rise quite high. Full TV, pressure in P is 105. (B) If the cable is adjusted shore, or not hooked up at all, line pressure and shift points will rise and full throttle operation may not be possible. What should the guage read with the transmission in park and the TV cable disconnected from the carb and the engine at idle, and the TV cable all the way released with no Feb 24, 2009 · This is the first time I'v built a 700r4 (maybe I should of put that first and all seemed to go really well with the process and like I say everything seems to work well up on blocks. Now open the throttle slightly. The truck we are working on is a 2013 Chevrolet Silverado 1500. After all Description Hi, I have a B&M 700R4 and I performed a pressure test to ensure I have the TV cable set correctly. Observe the pressure. Recently decided to put in a corvette servo upgrade from transgo. A worn OE pressure regulator valve can be detected in two ways. 3. 700R4-LB1 Line pressure booster kit 700R4-LB1 fits GM 4L60 (700-R4) and 200-4R transmissions. Sep 26, 2005 · I recently installed an 700r4 into my 71 Chevelle. Used two of the ribbed 700 style seals on the filter neck (same as it was). My readings at Idle with the TV connected all fell into the ranges provided by B&M. https://www. Shift delay, shift feel, and pressure control are all controlled by the TV cable. 4L60 Jan 21, 2025 · 1pc Transmission Constant Pressure Valve Body 700R4 For 88-92 700R4. 500 boost valve or there is an issue with the line bias valve. e. (A) If the cable is adjusted too long, one of the following conditions may result: (1) early shifts, slipping, and/or no detent downshifts; (2) low line pressure. 7 amps. So I blocked the line bias valve. Since the pressure in R is at the 200 range the pump is working. a . May 12, 2006 · Usage a test gauge to be sure. Oct 28, 2016 · 700 R4 PRESSURE TEST Feb 12, 2017 · i did a line pressure test on my 700r4 tonight. However, in checking the line pressure I have 90 PSI in neutral, 210 in reverse and 150 in all other gears. Stuff to look out for when the phone rings and you quit yer work in the middle of it. To pressure test a 700r4 transmission, you will need a transmission pressure gauge, a pressure test port adapter, and the necessary tools to access the test port. 700R4 pressure port location: 2004R pressure port location Pressure Test: Continue on to checking your pressures. 365 to a . First before I started it I pulled on the TV cable about 10 times or so. Nov 2, 2024 · C3 Tech/Performance - 82 700R4 transmission, no line pressure - Have an 82CE and never thought it shifted right. TCC is electrically controlled through use of a solenoid. Nov 19, 2012 · I read Tony's 700R4 pages and found some interesting points. The pressure chart shown is used for all Astro and Safari vans that use the Dyno test early failure of 700R4 transmission no pressure rise loosing 2 and 4 gear Dec 13, 2007 · All automatic transmissions use hydraulic pressure to apply friction components; either bands or clutches shift into each gear. They all work together . I’m thinking I need to get rid of the . Line Pressure Booster Kit 700R4-LB1. now if the trans shifts late at part throttle but gets the wot 2/1 you have to shorten the tv plunger spring in the v body and possibly install a tv upshift sping on the valve if it is missing. April 28, 2017. per instructions and all went smoothly. Jun 30, 2016 · MONSTER'S Website: http://bit. 0 amps is default and it causes maximum pressure, 1 amp is minimum pressure. Jul 14, 2007 · the kit shouldnt affect the 2/1 factor. Along with this a bigger boost valve and a new tv plunger, sleeve and cable. 860" steel rod inside of spring. D is 95. Blocked the line bias valve, 1/8" X . (I have a gauge hooked up to line pressure permanently) Edit for the benefit of others searching: the 700r4 tci manual valve body doesn't use a TV assembly. If your 700R4/2004R is replacing an original 700R4/2004R then skip to Step 2. He tells all the information Oct 24, 2012 · I did a line pressure check on my 89 700r4 while trying to diagnose another issue(700r4 problem 10-19-2012, 09:14 PM ) . I test drove the truck and it seems to be shifting, locking up etc. Aug 10, 2020 · Checking the line pressure to make sure the TV was good I notice an extreme pressure flutter anywhere over 1/2 throttle. Bogie Nov 17, 2022 · Buy 2Set 6AN PTFE Transmission Cooler Lines Set for 4L60 700R4 TH350 TH400 CBC350 TH400 3L80, 7ft Nylon & Stainless Steel Braided Hoses with Fittings (2-Pack) - Automotive Replacement Cooling Line Bundle: Cooling Lines - Amazon. 500 boost valve installed and modified the pressure valve (ground flats on the land). Jan 5, 2011 · Now I have a gauge line hooked up to the pressure port on the trans and I want to make sure the line pressure throughout the different gears is where it's supposed to be. 4. Required. January 21, 2013. Aug 1, 2021 · First ran a "normal test with the TV cable adjusted correctly foot on brake and 1000rpm's on the tach. Oct 7, 2021 · Line Pressure Booster Kit 700R4-LB1. I have a oil temp probe in the pressure test port and this wil display < 120 fahrenheit After one hour the temp is around 175 fahrenheit and the shift are suddenly more hard especially 2-3. An incorrectly adjusted TV cable. p/n/od/d : 70 psi (65-75 normal) Reverse:115psi (108-123 normal) L2,L1: 150psi (175-200 normal) with the TV cabled locked at 'full pull' p/n/od/d: 140 psi (125-150 normal) Reverse: 150psi A blocking pin about 1/8th diameter (welding rod), . The TV cable is a critical part used to set internal line pressure and part throttle shifting so that incorrect installation can result in total transmission melt down. Print. Clean dirt from line pressure plug, located on left side of transmission case, and remove plug. A form, as in figure 1 should be made to record the readings. There is usually very little change in line pressure at the ends of the range. May 24, 2023 · The operating temp line pressure in 2nd is 80psi @ wot and shifts to third pressure goes to 140 as it shifts and holds that pressure. Video shows how to check the transmission line pressure on a 4L60E transmission. Is there any way to test them? I tried using my air compressor but it didn't make any of them switch -- probably too low a pressure? Jack Jul 13, 2023 · Unhook the cable from the carb . (used to set internal line pressure and part throttle Sep 24, 2010 · Line pressure booster kit 700R4-LB1 fits GM 4L60 (700-R4) and 200-4R transmissions. tlb tixz zxhermc ryvpys pjwu gvxm lsra flgw oxpl uvi yqus gokqt sul kkgvdz zxd