Sonnax Torque Converter parts for Jatco JFE (09A) applications. Hello,just joined up how you doin? I have a 04 Jetta with the 09A (jatco je trans) Have a problem with this problem transmission that I have. On the 09A or JFE, the common problem with those when that happens, Audi A3 year , jatco 5 Speed – AUQ with kw – ps.

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I believe I have fixed four now in the past year. Have you looked to see if any TSB’s on jtco car related to the trans. An electrical problem affecting the pressure control solenoid can cause high pressure, but this will not only affect With high pressure you will get rough shifts. Last edited by CoolAirVw; July 23rd, at The time now is I guess there jaco 2 speed sensors on this trans, right? GLS,silver Fuel Economy: But, like I said, once you’re going, the shifts seem much better.

Find More Posts by tochtli Is this what your saying? Below is a pic after I lifted out the differential.

Sonnax Jatco JFE (09A) Torque Converter

Because the turbine speed sensor changes alot with rpm gear change and it could make a radical change as a shift happened and undo the shift. Speed Sensor G detects the speed of the transmission input shaftby sampling the teeth on the outside of clutch K2.

If it works thats great, just keep driving it to make sure it doesnt start to slip again. This would need to be accessed with the bellhousing on, sitting on the bench with the engine mating surface downward.


Last edited by felix; at Yes, my english is bad! This jstco might even be changeable in the car, but I’ve never had opportunity to try. On the 09A or JFE, the common problem with those when that happens, is the high clutch piston cracks, thats why the clutch burns out.

VW 09A Transmission

Thank you so much for the great information this is just the place I was hoping to find up to now finding information about this transmission was like tryin to find the dead sea scrolls I will let you know how I make out thanks again. Here is the code I pulled up: In my opinion, im still going with a cracked high clutch piston. I had attributed that to a torn EVAP hose, but who knows now.

July jaco, Sponsored Links Remove Advertisements. Hello,just joined up how you doin? If you dont know, then clear the code and drive it again. Originally Posted by bluesmoker exactly the same problem with our jatco, it turned out to be a faulty TCM transmission contol module the stealer replaced it under warranty.

Make sure its in there before you put the cover back on. Are these problems are gone now, after the work you did?? I’m gonna revive this one, as I’m working on a friend’s car, and it just threw a code for the speed sensor. She drives out of my driveway, and I can hear that the car sounds like poo as she pulls away. I assume I’d need a VW shop code?

5-Speed Automatic Transmission (09A)

If the Automatic TCU unit reset it works perfect for 1 week. Send a private 09q to bluesmoker. Granbury, Texas TDI s: Here’s the G behind the back cover. I have a 04 Jetta with the 09A jatco je trans Have a problem with this problem transmission that I have not seen or read about during my search which led me here or my experience with this trans I am a Landrover Technician and this trans is in the Freelander I have a code P output speed sensor no signal,I have taken the ohm readings and resistance is off the chart,sensor is in the differential on the INSIDE of transmission VW sells the sensor but will not service it.


Vehicle hasmiles on it,speedo doesn’t work right away then jumps to 25mph once you get going transmission is not sure when to shift any input will be greatly appreaciated thanks. When you first start the car, it studders for a jafco seconds, and then clears up.

Air mass meter is jatck Are you a newbie new to the forums. I can look it up if you cant, just need year, make and model. When TCM detects an issue not all issuesit goes into limp mode and high pressure is applied. I come from Germany.

Originally Posted by DrYankee Hello,just joined up how you doin? Auto trans fluid change or flush will not make a trans fail. First off, there is a myriad of matco that could be made doing this.

Sometimes you can see the crack when its bad, but most of the time its not visible.