Gearbox Problems

[sirmiro]

Hi!

I have some trouble with my autobox in the stag (S1 RS4 V). When i get above ~140km/h it feels like it start slippering in the box and don't put the power to the ground. The slippering seams to increase with increased speed. It hardly wants to get to the speedlimit at 180.

1st & 2nd is no problem at all and it get all 4 tires ti spin some meters, but something feels wrong in the the higher section of the gearbox. I have tried with and without O/D and no change.

Have anyone had this problem and how do i solve it? (Don't want to disassemble the box if i can avoid it.)

We tried to break a world record and I'm not happy that the car got power left but don't get the speed. "Only" 170km/h with a snowracer behind...

(But i like the sound...)

Edited December 26, 2009 by sirmiro

[KiwiRS4T]

You're crazy! Are you towing a guy on a ski???

[sirmiro]

You're crazy! Are you towing a guy on a ski???

Snowracer, not skis. A bobsleigh.

[lachlanw]

check the level of the fluid it has a dip stick . and it is possible gear box is not warm enough . have heard of them not even going into 4th untill the ehgine ang gearbox is hot enough

and that video is f**kin nuts . we got up to 70 with 3 plastic $3 tobogans on 3 different ropes behind same vehicle once

Edited December 27, 2009 by lachlanw

[pipster11]

you may wanna think about making a cover for the front of the radiator to help the engine getting up to temp

your trans oil passes through the radiator to help keep it at a constant temp and it is possible that its not getting warm enough

i was watching a program (ice road truckers) and they had trucks running in temps a bit colder than yours and some had most of the front grill blocked off to prevent overcooling i presume

[RBPOWA-(TJ)]

you damn sweeds! lol

[lachlanw]

yeah because thinking about it the auto trans cooler/warmer is in the bottom(cold) tank of the radiator and at those speeds and temperatures the bottom tank is probabaly cooling the auto oil way cooler than it should be

[66yostagea]

I thought Turnips were crazy, but Sweedes are f**king awsome. And I've been there.

But yeah! on the tranny "cooler". Initially the radiator is used to warm up the oil to get the gearbox up to temp. If you are towing etc, a cooler is used to keep the temperature getting too high.

[sirmiro]

Thanx so much. Haven't thought that it can be to cold.

Which temperature is recommended for the transmission? I need to mount a gauge for it just to have control, but it's no idea if i don't know where it shall be.

Temperature is changing between 0 and -20 degrees C. We just need to be crazy so we don't freeze to death.

[KiwiRS4T]

Thanx so much. Haven't thought that it can be to cold.

Which temperature is recommended for the transmission? I need to mount a gauge for it just to have control, but it's no idea if i don't know where it shall be.

Temperature is changing between 0 and -20 degrees C. We just need to be crazy so we don't freeze to death.

Auto trans fluid need to be a little less than engine temp- say between 80 deg C and 100C. You could consider some sort of radiator blind like trucks have so that you can cover part or all of the radiator core.

[chuckie]

Thanx so much. Haven't thought that it can be to cold.

Which temperature is recommended for the transmission? I need to mount a gauge for it just to have control, but it's no idea if i don't know where it shall be.

Temperature is changing between 0 and -20 degrees C. We just need to be crazy so we don't freeze to death.

Hi Trans temp should be around 100 to 110 Degrees so maybe look at a few thing`s,

look at if you really need a TRAN`S COOLER ??,as it`s going in to rad,look at your Thremostat & what temp it is,mine come with 82 degrees C so you will need to get ENGINE TEMP UP may need to block most of the air flow ,as we did when in UK IN WINTER & TRANS is very temp sensitive ,good luck cheer`s Chuckie,

[lachlanw]

turn the radiator up side down so the end with the auto pipe in it becomes the hot end .... meh never mind . they are crazy not retarded

[sirmiro]

Thank you again!

You in here saves me over and over again. So wonderful to have a place with all the knowledge as in here.

I'll start to mount a tempgauge to be able to check it. Then i'll think about changes. I've got the intercooler in front of the oilcooler so i'll guess it rises the temp a degree or two.

Need to get a sensor asap.

(And I'll get the enginetemp to the right level in about 2min.)

Edited December 27, 2009 by sirmiro

[sirmiro]

Just had to post the finished video:

Edited December 29, 2009 by sirmiro

[KiwiRS4T]

Bet you gave the oncoming traffic a fright!

[sirmiro]

Bet you gave the oncoming traffic a fright!

We had to abort because of them, and they started to flash the headlights like they were some kind o polices. Unfortunatly we didn't get the real police on camera. They were very suspicious when they saw us just before attempt one.