97 bmw 528i tranny jurk

[victort247]

my tranny takes a while to grab when i tup it into reverse. then when im driving at about 70 and step on it. it kinda jurks and keeps doing it unless i let go off the gas. what could it be?

[witeshark]

I would think it may be overdue for a fluid change.

[victort247]

i just chanded it. could it be that there is noe enough atf? or because i used a cheap type of dexron 3?

[AlpineSixAndSeven]

Could be low fluid how bad was your old fluid? sometimes you have to change it 2-3 times to get most the bad fluid out...

[victort247]

it looked bad. but it didnt happen right after the change. i had to much in it so i drained it because when i filled it up it was jaked up in the front so it was not balanced. it was fine for about a month. then i decided to drain it because when i put it in reverse it would take about 2sec to switch in. so after i drained it, give it 3 weeks it started to act up in the last gear.

[victort247]

anyone?

[marti5]

Please follow my instructions, this is the correct procedure:

To change auto gearbox Fluid and filter on an E38/E39 you will need:

1) a torx T20 socket ( male ) for the pan screws and filter screws

2) a H8 Hex socket ( male ) for the drain and fill plug

3) a minimum 5ltrs Dex III

4) a new filter ( BMW )

5) new pan gasket ( BMW )

6) a garden sprayer ( to refill, works brill )

7) a suitable container for draining fluid and rags.



How to:

> car up minimum 400mm, the car MUST be dead level.

> Start up.. 10mins turn off

> remove bottom plug and drain fluid / BEWARE HOT FLUID BURNS !! / safety goggles required

> replace pan plug

> remove all pan screws / clips that hold wires to the pan/ be careful there will be fluid still in the pan!!

> remove the 2 filter screws / there will be fluid left in the filter !!

> clean out pan and the four magnets/ lint free cloth / degreaser or brake cleaner

> clean surfaces for gasket

> screw in new filter / make sure its in flat and take care to get the 'O' ring in correct

> replace the four magnets

> place gasket on pan with a little fluid / replace pan

> Undo fill plug , side of box at the rear

> start filling until fluid dribbles out / replace plug finger tight

> start car... go through all gear selections slowly 3 times keeping foot on brake / then in 'P' turn off after 10 mins

> undo filler plug fill some more until dribble comes out / plug back in finger tight

> Start car put in 'N' ....now be careful not to burn yourself!! whilst car running undo filler plug put more fluid in until it dribbles out again, put filler plug in and tighten, the reason for having it running is the box pumps approx 2 - 3 ltrs of fluid in to the torque converter.

> All done car down, fluid to a designated place!!

> Time for a cup of tea / can of beer or a ciggy

Note: the entire box takes 10 ltrs, but you will not require this as the torque convertor will still be half full and also the valve control body also contains more, I would say that a 5 ltr can will be enough, but please dont quote me!!

The last time I gave mine a service it took 6.5ltrs.
__________________

[victort247]

I just realized that it only does it when warmed up and driven for more than 20 min.

[marti5]

Probably due to the fluid getting thinner as it heats up.

[victort247]

but y would it only happen in the last gear?

[marti5]

Sorry I was concentrating on post #5, Ok so it only happens in 4th, this could be down to the output speed sensor which is in the box so you would have to remove the pan anyway, but more than likely its down to the 4th clutch pack which is I'm afraid a rebuild or replacement or used box as a new box out ways the value of the car.

I would go for a fluid /filter change 1st as that's the cheapest option, I would very much doubt its the output speed sensor but could be, on the other hand it could be a solenoid which is on the end of the valve control body, if I remember correctly there are 5 ......this sounds more like it, what you need to do is get a live diagnostics done, or get another valve control body for exactly the same box. Diagram of solenoids:

RealOEM.com   BMW E39 528i A4S 270R/310R solenoid valve/cable set

[victort247]

I just did an oil change about 500miles ago. ???

[marti5]

Yes I did read post #5.................but you never had the car level !!!! as per the instuctions I have posted. If you managed it with just the front up you should have got around 6.5 ltrs in, but I know to get that amount in with just the front up is nigh on impossible.

[victort247]

i took the fill plug off yesterday and atf came out. so? could i have over filled it the first time, because it didnt stop flowing out the time i went to drain it again. this time it wasnt on enginne stands. just reached the glug without being under the car. it still leaked???

[marti5]

Originally Posted by victort247

i took the fill plug off yesterday and atf came out. so? could i have over filled it the first time, because it didnt stop flowing out the time i went to drain it again.

Did you have the car level, in 'N' and running when this happened???