Maybe some torque converter material stuck in there. Good luck and keep me posted. The 4L80E is a much larger unit than its smaller 4L60E counterparts as well. This condition is most likely to occur with an incorrectly installed remote starting system. Properly is the operative word. Here are the most significantly differences between these transmissions. Without actually examining the vehicle, there is no way anyone, even me can diagnose your problem.
We welcome your comments and suggestions. It is significantly larger than the and if you compare the cases side by side it makes the smaller transmission look tiny. Besides unplugging the ecm, you can also reset things by pulling the appropriate fuse s and putting them back in. With a digital multimeter find the two wires that give a voltage reading of about 0. If you get it diagagnosed and you need a replacement transmission, make sure you replace it with the best transmission available. Not sure of the function of each sensor.
The Turbo Shop has an outfit that comes with a custom cast-aluminum tailshaft housing with a mechanical speedo drive and the option of several different trans mounts for various applications. To check the condition of a given solenoid, simply use a hand held ohm meter. There is a small magnetic nipple that build up metal flakes and rust over time. It has never exceeded 150 until today while just normal driving. Remember that these are the main differences and you can find other small differences if you go in-depth researching. This transmission is significantly heavier than the 4L60E with a dry weight of 254 pounds.
You can see more details here:. Doctor Steve likes an upgraded version with O-rings and a progressive spring. I had some concerns, because we're getting snow tonight and don't have time to do any work on it today. These are located on the valve body and are as easy to get to as the shift solenoids-but much more costly. I took it down and replaced the filter and added about 5-6 quarts.
It is imperative that the replacement converter you choose is a lockup converter. I used jack stands only as safety but they had no load on them. The Transmission has been rebuilt 5000 miles ago and the Torque Converter Clutch was replaced twice. This could be all kinds of item but those are the most suspect. It didn't help, the truck was still overheating with no load or towing and the Torque Converter wasn't locking up. Driving without problems for 8 years a 3500 K dually 6. Windwalker1969 answered 8 months ago Ok not the cats.
I would periodcially lose hi gear. Here he shows us the forward clutch drum ring which is grooved due to a worn drum bushing. It was available in both two-wheel drive and four-wheel drive models, and came with either a small or big block engine. This loss of power may be caused by an open in the ignition switch. Take a look at it all there is some good info on all the different switches and modules that effect the shift pattern of the 4L80.
The site is fully functional and ad free! After draining the fluid out of the transmission the pan was removed along with the filter. This article deals with fixing your factory 4L80E to make it as durable and reliable as it should have come from the factory. It's running at about 100 degrees above ambient temp. That being said, it finally became imperative to upgrade the , and that was the introduction of the 4L80E which happened in 1991. Tags: , , , , Posted in. Any help would be appreciated. During this, all that's required to make it shift is to lightly let off the gas then the pcm tells it to shift.
It is one of the most common as well. I am not sure what to check next. Its all fun Rebel After 'bout a year and five hundred bucks the transmission is fixed!! If your car model came from the factory with the 4l80e, get a dipstick from a transmission that has been fitted in one of these cars. Anyone have this Problem and if so what was the fix? That wiring diagram is the same one that I have, only mine has highlighter marks all over it. This can be caused by excessive vibration or by a voltage surge. They have to be spotless for a good reading. There are other problems that I've not had the joy of experiencing first hand however.
You should have four four gears until the transmission senses that the issue has returned. I think my limp mode is 2 gears, but I wouldn't swear to that, might only be 2nd. You can either purchase an already premade cross member or you can do one yourself with a welder and some skills. But, the same fluid soldiers on mile after mile. But while the 4L80E is a strong, heavy-duty transmission, during the first few years of production the 4L80E was not as durable as its design permitted due mainly to faulty parts. United States Army Drill Sergeant J.