4l80e Starts In Second Gear

Leading provider of high performance automatic transmissions, torque converters and drivetrain components for race, street/strip, hot rod, street rod and towing. Gears 1 and 2 First and second gear selection in an automatic transmission vehicle do basically what they would do in a manual transmission vehicle. 4/454 suburban 4l80e trans. 23 gears in 1st gear. No code setting while 1-2 or 2-3,. Reverse works too. So I replaced the sensor with the takeout part. I am quite happy with my TH400's and 6. Moskwa, PI David E. The GSM was designed and is well suited for a variety of markets including automotive, military and agricultural and works with nearly any automatic transmission. Six-speed WS6 Pontiac is the product of a '90s GM strike, a paint recall and pure dumb luck. P0730 states “incorrect gear ratio”. Yeah it moves just fine from a start in 2nd. Shop Transmissions TRUSTED BY THE BEST. 2L kit with 2 GT3240 turbos and 980HP in dyno(1. If you are experiencing no 3rd or 4th gear, it can often be caused by the shift solenoids. If the low first gear utilized in most 6-10 speed transmissions is not suitable for your application, it is possible to start in second gear, which will effectively create a close ratio 5 (or more) speed transmission. And shifts soft but OK into 4th. The speedometer works… and I can drive around in 1st or 2nd gear with absolutely no slipping at all. This also allows the valvebody to open all its. Welcome to the new Gearstar Performance. Start by fixing the ABS and then scan live. When commanding first gear, it starts off fine with no slip(but i really could be starting in 2nd. The main problem with the 4L80E is it will feel like you're taking off in second gear in the 4L60E. So its throwing the 2-3 solenoid and tcc codes because when the fluid is hot it can't create enough pressure and thus can't stay in torque or 4th. -Will manually shift into 1st, but in 2nd, D, and OD starts and stays in 2nd. The speed limit is 45, I normally climb it at 50 mph unloaded, with no trans heat concern. In the last issue of GEARS we covered three complaints: coastdown clunks, downshifting at closed throttle, and falling out of gear. perfect shifts, just like it always had. Since I run EVANS the interior heater starts to come up in about two. This is after having to pull the valve body because the gear selector would not shift. While on the road, I can shift from D into 2 and it will downshift ONLY when going above 30 MPH. All of my gm vehicles i run F**d type f fluid. Munns Zachary J. Step 8:Slide the hex connector with the second 5/16"-24 female rod end onto the end of the stainless steel rod. $30 and it was fixed. Turning the key on and off 3 or 4 times let's it start again every single time, but that's the only way to do it. 5 the rpm for the tach is read off the alternator the engine speed (also the rpm) for the ecm or pcm that controls the 4l80e transmission behind the 6. Plug a pressure tester into the tap and check the transmissions hydraulic pressure through the gears. Have Peace Of Mind, knowing that your new 4L80E Transmission has all the Updates developed by General Motors Engineers combined with the Latest Industry Advancements providing Unparalleled OE Strength and Durability. This is a very easy check. I took it into a transmission shop owned by my neighbor where they have much experience with the 4L80E and when they took it apart, it was completely destroyed. It was an evolution of the Turbo-Hydramatic 400, first produced in October 1963. The 700R4, which became the 4L60/4L60E, (E means electronic control) is like a TH350 with an overdrive 4th added, the 200R4 is like a TH200 beefed a little with an OD gear. P1810 CHEVROLET Meaning The automatic Transmission Fluid Pressure (TFP) manual valve position switch consists of five pressure switches (two normally-closed and three normally-open) and a Transmission Fluid Temperature (TFT) sensor combined into one unit. 73's now it would be like you had 3. Designed for longitudinal engine configurations, the series included 4 forward gears. 06 First and 1. 4l80e trans with 2nd gear starts pressure is high new solenoids checked wiring no dlc comm trans light stays on cannot check codes a solenoid is on when you start engine and stays on Submitted: 9 years ago. Unless your thirst for automotive knowledge borders on compulsive, you can leave it a mystery. 4L80E Performance Specs The 4L80E is a manual transmission that has a maximum engine input torque of 440 lb-ft and is capable of providing an output torque of up to 885 lb-ft. i put 6 years of track racing and tons of street "driving" on a non-billet 200 car ran low 11's. It shifts from 1st to second just fine, but when I shift from 2nd to 3rd or drive it does nothing, then from drive to OD it shifts. When I say shift im not talking about P N or R like when you are in drive (it is a automatic) it seems like it is stayin in 2nd gear it is a 4 speed I think the transmission is a L840E I think I have no clue it is in a 1993 C2500 3/4 Ton chevy 350 5. I have a problem with a gear box jumping out of 4th gear. The adapter kit is designed for exclusive use with the GM 4L80E 4wd. Trans was just rebuilt by a local shop. If you have 3. 2nd gear starts can be pcm or quad driver, direct clutch lube feed blocked. A: Kickdown is a downshift in an automatic transmission triggered when the driver pushes the car's accelerator to the floor. 7 liter gas engine or the 6. 34994-17K NOTE: Check for visual wear on end plug. 63 for the 4L60e so a little bit of gear is lost there too. The 4L80E transmission is the advanced progeny of the legendary TurboHydramatic TH400 automatic transmission, and is based heavily on the 400 in both parts and strength, yet featuring an added overdrive gear, a lock-up torque converter and advanced electronic controls. FOR SALE - Decatur, IL - This is a Professionally Rebuilt and Updated 4L80E/85E Automatic Transmission that will work behind 1991-2007 4. So how does one know when the converter is locked up. It is available in both conventional and reverse shift patterns. Often, even professional repair facilities will replace a transmission rather than repair it due to the specialized skills and equipment required to service transmissions internally. Changed the ignition switch/wiring harness assembly,no difference. Just second gear. Exception: A 50 series code is always checked first. This early harness has a problem with leaking fluid at the pass-through connector. It probably goes without saying, but if you shift the vehicle into second gear manually, it will still move. 7 HP $ 9,139. Replace the T-bars completely? How does that work? Link to the kit? Yep, keys and bars would come out completely (weight savings!? lol) Puts a coil. 1991 GMC 2500 4L80E limp mode Well guys here it goes this one is confusing. Here's the weird part. To help save your second gear clutch, accelerate firmly in first gear to 17 MPH, and then back off the gas pedal nearly all the way to allow a low. The 4L80E transmission is the advanced progeny of the legendary TurboHydramatic TH400 automatic transmission, and is based heavily on the 400 in both parts and strength, yet featuring an added overdrive gear, a lock-up torque converter and advanced electronic controls. Trans shifts into gear harshly, 3rd gear starts, manual 2nd available but no 1st, no 4th, and no TCC lockup: No power to transmission, or trans is in limp-home mode. To differentiate between the two, take a look at the bellhousing: A later trans will have a seven-bolt pattern with the additional bolthole at the 12 o’clock position, for use with LS-series engines. can't see the need for the 4l80e with your. TPS checks out OKand what happened after this is puzzling. 63 for the 4L60e so a little bit of gear is lost there too. If you are experiencing no 3rd or 4th gear, it can often be caused by the shift solenoids. The tranny gets pretty hot taking off. These have three planetary gear sets. 2's in my trucks, if for any other reason to upgrade engine is to get more torque and HP off raod and under heavy loads. The transbrake valve body eliminates the intermediate band which eliminates engine braking in second and third gear. The torque converter turns while the transmission is in park and neutral, therefore, any noise from the torque converter will occur while the vehicle is in gear. Deep pan not required. has 2nd gear and reverse only. Im not slamming on the brakes (though even then it should not start in 2nd) this is the first retarded transmission i have ever owned. TH400 Vs 700R4 Vs 4L80e Vs gear vendor It also has a pretty big swing in ratios from 1st to 2nd gears. Here's the weird part. In fact OD can engage in 3rd and 4th, on top of each gear. The speed limit is 45, I normally climb it at 50 mph unloaded, with no trans heat concern. If more than one trouble code is present, always start your checks with the lowest number code. This attribute is developed to alert a driver when they start to relocate out of their street unless a turn signal is on. Symptoms: • 2-3 Neutral • 2nd Gear starts • Band failure • Clutch failure • Code 68, 85, 86, 87 • Low solenoid feed pressure • No 4th • Solenoid codes • Wrong gear starts Cause: Actuator feed limit bore wear results in low pressure at shift and EPC solenoids. It is available in both conventional and reverse shift patterns. It's not really an automatic transmission where you put the vehicle in drive and just drive. Put selector in 3rd gear. Won't shift out of low gear. This style PWM TCC system was developed to allow for a smooth engagement of lockup and allows constant slippage of the TCC and can apply in 2nd through 4th gears. truck shifts fine for several days then go out to start it and it has prn1st only. The 4L80E is not without problems though, as hard shifts and losing the reverse gear are some of the most common problems reported from this transmission. The black newer F150 prerunner of Nick Baldwins that was finished last year has a 4L80E in it. I pulled the same part out of a working 4L80E that I pulled from a parted-out '95 Diesel pickup, and that one measured 1387 ohms, a lot closer to spec. If you are experiencing no 3rd or 4th gear, it can often be caused by the shift solenoids. As soon as it hits 20mph, it'll lockup then down shifts back to 1st and starts turning again. When the car feels like its taking off from a dead stop in 2nd stop the car. I'm wondering if it is possible to swap out my 4L80E for an NV5600 6-speed manual transmission. I've been told it's hard on parts to start the burnout in 1st and let it spin into 2nd and the easiest remedy to this would be to start the burnout in 2nd gear. Because different transmission gear ratios can greatly affect a drivetrain combination, it's important for anyone performing a transmission swap to know the gear ratios of the gearboxes you might be installing in your vehicle. To mate our 4L80E to the NP203, we changed the NP203’s input gear to a 32-spline TH400 unit, ordered a factory 4L80E transfer case adapter on eBay, and redrilled the face of the 203 to a new. About 12 Lead Wye Start Delta Run Motor Wiring Diagram 12 Lead Wye Start Delta Run Motor Wiring Diagram is most popular ebook you want. Plug a pressure tester into the tap and check the transmissions hydraulic pressure through the gears. I just built and installed a 4L80E in my 68 Camaro. Somehow, it can shift your car from gear to gear, knowing how fast you need to go and how quickly you need to get there. The reverse just went out with a klunk one day. net is the home of the Transmission Rebuilders Network offering the leading transmission rebuilder forum in the transmission industry. Just today I had it in 4hi, 2nd gear, 45mph on the speedo wide upon up a muddy hill throwing 30 ft roosters and she never missed a beat. 9bar)controlled by V-pro. 4L80E burnout starting in 2nd gear. Throttle engine, rear tires start spinning really fast then I am experiencing engine braking and it "finds" first gear. Questions and Answers. P1810 CHEVROLET Meaning The automatic Transmission Fluid Pressure (TFP) manual valve position switch consists of five pressure switches (two normally-closed and three normally-open) and a Transmission Fluid Temperature (TFT) sensor combined into one unit. In addition to the transmission control, drive by wire, and dual wideband oxygen sensor options, Dominator® systems have nearly unlimited capabilities to control any power adder, input, or output you can throw at them. The 4l80e is more compact,more cost effective,and just as reliable as the gear vendors unit in my opinion. On my 4l80e trans. If the tach and speedo don't work and it starts and stays in third gear, there is a good chance that the tranny is not getting the 12 volts it needs to shift, but most times it should set codes. The tranny gets pretty hot taking off. This problem is the NUMBER ONE most overlooked issue by other rebuilders. The speedometer works… and I can drive around in 1st or 2nd gear with absolutely no slipping at all. Committed to helping you get your truck back on the road. if it doesnt shift into second but when you shift it into 3rd it down shifts and also when you shift from 3rd to 4th the rpm doesnt change then you are missing 2nd and 4th also which means the sun shell. 100" TH400 Steel, & 3. And shifts soft but OK into 4th. A shop rebuild is around $1800-$2300. If the torque converter has damaged needle bearings, noises will be heard from the transmission while you're driving. It is only used for the ECM to calculate transmission slip. When diagnosing the problem and the cause of the whining noise, take note of when the sound is occurring, such as when the engine is idle, when shifting gears, when driving at. 4l80e Wont Shift Out Of 2nd Facebook; Last week my 1995 k2500 4x4 suburban went into the 2nd gear protect mode. 4L60E / 4L80E The transmissions above, are rear wheel drive 4speed automatics that are all computer controlled. They now are saying that it needs a new Automatic Transmission Valve Body. 2nd gear starts can be pcm or quad driver, direct clutch lube feed blocked. A 200R4 is not a 700R4, and vice versa. Yesterday was the 1st time to try it out. It is not a 4l60 or asian variant. We start with only late model cores for our performance line and application based core for our heavy duty line (Heavy Hauler). But I would like it to be a turn key start, idle, run like a raped ape and still retain A/C ect. While based off of the 4L80E and using it’s case, that’s essentially where the similarities and sharing of internal parts ends. I have been told the gear options on the 4L80E are not great for offroad and you have to run more gear in the rear but they are doable. Complaints of second gear starts, neutral after 2-3 shift or no 4th gear are compounded by worn AFL limit bores, leaking O-rings and solenoids. GM 4L60E/65E/70E- 4L80E/85E Diagnostic Code Book - ATSG PDF free online. I have 4L80e in my 1991 3/4 ton 4x4 sub with a 241 t-case. maybe electrically??? any thoughts??. Step 8:Slide the hex connector with the second 5/16"-24 female rod end onto the end of the stainless steel rod. When it upshifts it locks the rear wheels. manually shift into 1st @ 2nd gear, its locked in 2nd gear. One indicator of this issue is the 2nd gear starts, 3rd neutral condition, no 4th gear, codes 68, 85, 86, and 87 and direct clutch breakage. Add a few performance parts to them, and you have a transmission that will handle more than the engine can with full performance modifications. 0 engine and 4l80E transmission. I have a 93 one ton chevy with a 4l80e , my truck would not go into third gear or overdrive. 0 liter gas engines after model year 2000 trucks. If you want to edit your tune so the 4l80e. i took it to a shop he said that it needs a new transmission or rebuilt again. 63 Second, which was a holdover from the 700-R4 and better suited to a dump truck or. 73's now it would be like you had 3. 4L80E stuck with only 2nd gear and reverse. Nice BIG BANG captured. Make a long story short I drained transmission fluid, pulled cover and replaced solinoid B controls third,4th and overdrive. 8 WATRA30-18 Sell on Amazon Start a Selling Account: Amazon Second Chance Pass. its not just the power it has to hold up too but the weight of the truck. It will shift from 1-3 because second is forced and 1 and 3rd are done by solenoids. 73's now it would be like you had 3. 00 gear would be 2,173 rpm. If the low first gear utilized in most 6-10 speed transmissions is not suitable for your application, it is possible to start in second gear, which will effectively create a close ratio 5 (or more) speed transmission. I was having it the sub inspected to sell. This is because the Gear Vendors unit overdrives the output shaft and the 4l80e overdrive unit must overdrive the forward and direct drums,and both gearsets because it is located in the front of the. FLT 2nd gear clutch kit ; Start the engine and ensure each gear engages. There was also a rear sensor in the takeout transmission, and the connector was all munged-up, but it also measured about 1390 ohms. Then add an inline filter to protect the new one. Before you buy a vehicle or use it for trailering, carefully review the Trailering section of the Owner’s Manual. Depending on how many miles and rust has collected on the studs and nuts will determine how easily they come off. -Will manually shift into 1st, but in 2nd, D, and OD starts and stays in 2nd. First tell me this; where does the instrument clusters gear indicator lights get their signals from? If the signals come from the neutral safety switch, we're gonna have to figure out a way to mount it to the 80 trans. 48 3rd 1 1 4th 0. can clear the code and will shift gears normally but no lockup and after a 5 to 10 mile drive will shift hard but stll no lockup. The appropriate flexplate, crank adapter and required bolts are also included so a standard GM converter with a small bolt circle drops right in. Powertrain System Dynamic Model Development: HMMWV- High Mobility Multi-purpose Wheeled Vehicle Powertrain System HMMWV- High Mobility Multi-purpose Wheeled Vehicle John J. Does it move in manual 1,2, and/or 3? When engaging drive it shouldn't take more than a second for most transmissions. These are relatively simple but are best done during a rebuild by a professional transmission technician. I did this even in my Mazda 3 as in the manual it said use 2nd gear for starting in bad weather to limit slippage. Failed Synchronizer : If you have a manual transmission and you’re experiencing a grinding sound when trying to shift gears, the problem is likely to do with the synchronizers. 100+ years combined experience. While the 4L80E uses a 2. The Explorer 8. When I log data, the speed, rpm, TFT, commanded gear, TC lockup, and TPS all look great. You have to re-pin two wires in the main transmission connector. Re: 4L80E intermittent shaking and vibration 10-30-06 07:12 AM - Post# 1025531 In response to vt100 Oh yeah I forgot to mention that in order to get it to stop, I simply get off the throttle for a second, and then everything is fine. 5 the rpm for the tach is read off the alternator the engine speed (also the rpm) for the ecm or pcm that controls the 4l80e transmission behind the 6. 4L80E is a TH400 with the OD added and electronic control. One indicator of this issue is the 2nd gear starts, 3rd neutral condition, no 4th gear, codes 68, 85, 86, and 87 and direct clutch breakage. The 4l80e is more compact,more cost effective,and just as reliable as the gear vendors unit in my opinion. Core charge and shipping crate are included in the price of these transmissions. Shift 1st to 2nd gear, then shift 2nd to 3rd gear, then shift 3rd to 4th gear (overdrive). The trans was then installed in my Daily 1988 Crew Cab Chevy 454. Could be an ignition switch. Was having trouble with my automatic 06 TJ shifting hard from 1st to 2nd gear. • The transmission is defaulted to third gear (4L60/65-E). Corvette Servo for the GM 4L60E 4L65E 4L70E 4L75E High Performance Higher mile transmissions can also benefit and help to postpone a costly rebuild. Strap yourself in. 4L80E Performance Specs The 4L80E is a manual transmission that has a maximum engine input torque of 440 lb-ft and is capable of providing an output torque of up to 885 lb-ft. The speedometer works… and I can drive around in 1st or 2nd gear with absolutely no slipping at all. 48:1) (2nd - 1. GM Truck / Car / Van / Motorhome4 Wheel Drive 4/5/6-Speed Automatics There are two basic GM 4-Speed automatics: The light duty 700R4/4L60E found mainly in half ton and car applications, and the heavy duty 4L80E in the heavier applications. • The instrument cluster is inoperative. With second and third row seats folded flat. Page 2- Transmission (4L80E) First and Second Gear Only 6. A hardened input shaft gets you off to a good start with greater torque capacity. All of this extra room allows for added durability while retaining four forward gears and reverse. The 4L80E is a much stronger transmission and the NP149 is an AWD transfer case. With the manual valve body you have to shift it into second gear then third then forth. While the 4L80E uses a 2. 10 If you Google knanthrup 8. Page 2- Transmission (4L80E) First and Second Gear Only 6. Multiple stop and go tries in different gear selections still only 2nd gear. the 2-4 band applies 2nd and 4th gear so the band isnt the problem if he has 4th and since its shifting to 3rd gear tells me the valve in the valve body is working correctly. Click on Calculate. • Wrong gear starts • Solenoid codes • Clutch/Band failures • 2nd Gear starts • Codes 68, 85, 86 & 87 • No 4th Gear Replace with Sonnax Part No. 4L80E Torque Converter 1750 Stall Heavy Duty Torque Converter- Street Rage High Stall 4L80E Torque Converter This Street Rage is a heavy-duty brazed torque converter of 13 size. 4l80e stuck in 2nd gear - Answered by a verified GMC Mechanic We use cookies to give you the best possible experience on our website. When I log data, the speed, rpm, TFT, commanded gear, TC lockup, and TPS all look great. felt the hard shift from 1st to 2nd gear. In fact OD can engage in 3rd and 4th, on top of each gear. com engineers began searching for a way to have the car "automatically" shift from one gear to another. I have a 93 chevy C2500 3/4 ton it has the 4L80E in it and I have no knowledge what so ever on electric trans all I see on the tranny is it has the wiring harness coming out of the side and a rubber hose hooked to a plastic grommet on the top of the tranny and the shift lever linkage I am driving and the RPMS are 2500 @ 30 MPH which I don't know if its first or second gear it is stuck in. Cold start morning drive, 40*, I only have 2nd gear. The speedometer works… and I can drive around in 1st or 2nd gear with absolutely no slipping at all. Typically, the limp-in mode will place the transmission into second gear and keep it there. This was our first 1000HP transmission offered at PerformaBuilt. info1 Shifts: Complaints/Corrections 3rd gear start and bind in "1" clutch pack is the problem. Each one of our custom automatic transmissions is assembled by one of our master technicians from start to finish and then dyno tested to ensure that every feature functions properly. has 2nd gear and reverse only. 0l which is 4l80e equiped, I did a trans segment swap. The 700R4, which became the 4L60/4L60E, (E means electronic control) is like a TH350 with an overdrive 4th added, the 200R4 is like a TH200 beefed a little with an OD gear. I Recently ran into a problem with my 05 envoy slt 4x4. The GM 4L60E/65E/70E-4L80E/85E Diagnostic Code Book is designed to provide the technician with a step by step diagnostic approach to each and every transmission code available from 1991 to the 2007 model year. As soon as it hits 20mph, it'll lockup then down shifts back to 1st and starts turning again. they did a test drive. All 4T65-E’s had the fine pitch final drive gear sets which means only three differential gear ratios were available: 2. The second part of that issue is the neutral safety switch. This is all in an 8K lb truck to boot, so it is not an easy life for a transmission. This problem is the NUMBER ONE most overlooked issue by other rebuilders. We've assembled a variety of manual gear ratio charts for General. Sloppy Mechanics Wiki 4l80e sloppy transbrake (3rd gear spool mod) Now, I had alot of help getting this working from LS1 tech members and tons of info from a trans guy, wanted to let you know that first! thank you for the community for helping me out, i wired it in, tested it and ill show you how i did it. A 4L80E defaults to 2nd gear when it has no solenoid function. Bad luck or just the first of what may be many future problems?. There are switchs that indicate gear. Each shift event in the 4L80e transmission is a clutch-engagement, rather than a band engagement or combination of the two as in the 4L60e. No code setting while 1-2 or 2-3,. When the car feels like its taking off from a dead stop in 2nd stop the car. Gear Vendors Save Gas or Diesel Fuel Extend Chevrolet or GMC 700R4, 4l60E and 4L80E Mileage, Extend Engine Life, Start Saving Money Today! Does your Chevrolet or GMC need more power to climb hills or tow with heavy loads, plus at the touch of a button taller gearing for cruising down the highway with the lower engine RPM's and improved fuel mileage, see application guide. It starts in second from a standing stop. Look on craigslist if it needs to be replaced. 61 first gear/later gears. Designed for longitudinal engine configurations, the series included 4 forward gears. The TCM will detect failures within the systems that it monitors and any failure, from a bad solenoid to a blown fuse, will trigger a limp-in mode designed to prevent further damage to the transmission while allowing some limited capacity to travel. Before you buy a vehicle or use it for trailering, carefully review the Trailering section of the Owner’s Manual. 34200-16K Requires 77754-TL Accumulator Control Valve • Soft shifts • Low accumulator pressure • High line pressure in Drive • Low line rise in Reverse Replace with Sonnax Part No. Anyone know what's wrong? Is 4th gear gone? If so it's just a shift solenoid. perfect shifts, just like it always had. It has a major problem. 4T65E Tech Info. I made another video showing how to replace this part: https. As soon as it hits 20mph, it'll lockup then down shifts back to 1st and starts turning again. TH400 Vs 700R4 Vs 4L80e Vs gear vendor It also has a pretty big swing in ratios from 1st to 2nd gears. Enter the maximum potential safe engine RPM. Press the button for a second time and the horn should begin to honk. e) The Transmission Control harness has a connection for optional manual shift operation. I have a Chevelle with 402 LSx with a 4L80E (Pro Torque converter) controlled by the Dominator ECU using the Holley harness. As Kirt Koeller suggested, the problem was indeed caused by an aftermarket filter and a bad "O" ring. 4L80E transmission solenoid kit. You can also shift manual with switches. The trans was then installed in my Daily 1988 Crew Cab Chevy 454. 1991 GMC 2500 4L80E limp mode Well guys here it goes this one is confusing. Many times this code indicates that the transmission may need to be replaced, rebuilt or overhauled which can vary between $2500 and $5000. The 4l80e is more compact,more cost effective,and just as reliable as the gear vendors unit in my opinion. For example, the default figures in the chart are for a stock ratio transmission as fitted to a Type 1, 1303S (3. Diesel Conversion Specialist the original ford cummins conversion company. A 4L60 is a 700-R4. It will not hurt the car to drive it like this for short periods, but use manual 2nd to get the car moving, and be aware that the trans will generate more heat than normal while operating in limp-home mode due to increased torque converter slippage during 2nd gear starts and no lockup in 3rd gear. The 4L80E, which entered production in 1991 for trucks, was conceived on the heels of the 700-R4 and 4L60, although it shares quite a bit with the tried-and-true TH400. Gear Ratios - (1st - 2. 48:1) (3rd - 1. The NP149 came in the Silverado SS, Cadillac Escalade, and Yukon Denali. 73's now it would be like you had 3. Transmission whine FIXED!!!!! Well, for those of you who changed your transmission fluid and then developed the dreaded whining sucking whirring noise in 1st and 2nd gear, I've got GOOD NEWS. While on the road, I can shift from D into 2 and it will downshift ONLY when going above 30 MPH. It probably goes without saying, but if you shift the vehicle into second gear manually, it will still move. When it upshifts it locks the rear wheels. Anthony Wenbo Wang University of Wisconsin-Madison. The reported problem does not really affect the main brake parts but the cables and lines. 63 Second, which was a holdover from the 700-R4 and better suited to a dump truck or. We went out two weekends ago, and I meant to take nice pretty. Exception: A 50 series code is always checked first. I pulled the same part out of a working 4L80E that I pulled from a parted-out '95 Diesel pickup, and that one measured 1387 ohms, a lot closer to spec. 2's in my trucks, if for any other reason to upgrade engine is to get more torque and HP off raod and under heavy loads. Recently, my truck has been stuck in 2nd gear. This problem is the NUMBER ONE most overlooked issue by other re-builders. Look on craigslist if it needs to be replaced. The 4l80e is more compact,more cost effective,and just as reliable as the gear vendors unit in my opinion. Servo seals may be damaged (can be fixed without removing trans. The Ultimate 4L60e Guide provided me detailed instructions and solutions for repair. transmission is 4l60e Problem Trans has 1st and 2nd gear and shifts ok between the two. Problem: It has no first gear. 4T65E Common Problems. When I first start in the morning, it will stay in 1st gear for 2/3 miles, till it starts to warm? up, then will go into 2nd. Your transmission is a remarkable contraption. Am I looking at a solenoid or is it external electrical problem. 7L 350 V8, 4L80E Transmission Rebuilt (MT1) 1 Year Unlimited Mile Warranty (Kankakee, IL) $799 - JLA FORUMS. reverse is fine. This manual can be used in collusion with any type of scanner utilized in retrieving these codes from the computer. VW recommends 80W90 hypoid gear oil for most climates but in really cold climates you can get smoother gear changes when the car is cold if you use a 75W90 synthetic gear oil. 5R55N/S/W 1062B 1 Skips 2nd and 5th Gear when Cold 4T60E 1055A 1 Neutral / Shudder During the 1-2 Shift Torqshift 1081 1 Binds in Reverse, Second Gear Starts Poss. The 4L80E transmission has a lot of problems with the input and output speed sensors on the side of the transmission. Car goes into gear but feels very sluggish like the brakes are dragging, but it will roll easily (starts out in 4th gear), you manually shift to 2 to get it moving, once it's moving you put it back in OD and the car shifts 3rd to 4th on its own and locks the converter at the appropriate time: ShiftB solenoid failed: Easy fix in the pan. Stock transmissions have always been set up by the factory to provide smooth shift performance to minimize customer complaints. The only way to get it to quickly upshift from first to second would be to use a very light shift spring in the 1-2 shift valve that governor pressure would quickly overcome. Cargo and load capacity limited by weight and distribution. This is our strongest transmission offering to date. 4L80E 2nd & 3rd gear only I've got a 16,500lb motorhome with a '95 Chevrolet P32 chassis, 454 TBI and the 4L80E trans with 50K miles (purchased with 38K). There is a little bit of wiring. maybe electrically??? any thoughts??. With the pan off I unplugged the pressure switch and can hear the solenoid click. Designed for longitudinal engine configurations, the series included 4 forward gears. Transmission electrical diagnosis troubleshooting help on all your transmission problems or questions. There are two planetary gear sets in it. Actuator Feed Limit Solenoid Filter & Plug • 2nd Gear starts • Loss of 4th gear • Poor line rise Replace with Sonnax Part No. This gear change also results in a 4% less RPM drop upon the second (intermediate gear) to third (direct drive, 1 to 1 ratio) shift. 5 the rpm for the tach is read off the alternator the engine speed (also the rpm) for the ecm or pcm that controls the 4l80e transmission behind the 6. Available on all trims and standard on RS and Premier including 3. 70 posi differential. All of my gm vehicles i run F**d type f fluid. 4l80e transmission not shifting out of 2nd gear my transmission that has already been rebuilt wont shift out of 2nd gear.