Auto guru's please

[wile e coyote]

Hi guys I've had a issue with my auto box a couple of times now so if anybody can advise be great

The car drives fine and all gears work, but like yesterday I was driving for about 45 min on motorway usual speeds between 70 and 100 with traffic so box at usual temp.

Had a run with a couple of bikes which brought temp up to around 220 ( have a temp gauge fitted)

Now what happens is oil seems to come out off the top of the box , I think breather but not sure as cant see, this drips onto exhaust which then engages the smoke screen James Bond stile

I have an extra cooler fitted but between inter cooler and rad

I was considering getting my box refurb at srd later this year with another cooler.

So any ideas guys

Thanks darren

[tomgeer]

When was the last time you changed the gearbox fluid? could be as simple as it needs a flush?

Also are the fluid levels where they should be?

[wile e coyote]

Forgot to say

Fluid all good changed last year inc filter

[listy]

Is it definitely from the box? Could it possibly be from the rear crank seal?

[wile e coyote]

Def auto box oil

[absz]

220 degrees seems a bit high.Either the fluid is expanding,too much heat or it might be overfilled. Check level when hot. what fluid are you running the transmission with?

[jonc]

Have to say 220 seems a bit high. Has it gone that high before?

 

Sounds to me like hotter than normal fluid expanding and venting. I would add the cooler to the checklist above.

[wile e coyote]

Using Toyota atf

IM hoping it's just the temp

Thanks guys

Would anything else cause high temp ie pump or tc

[absz]

Slipping clutch packs or torque converter can also cause high temps, but that will cause driving issues and turn the colour of the oil brown with a strong smell of burnt oil.

 

EDIT: make sure the oil pipes are not kinked and causing a restriction in the flow as you have a additional cooler plumbed in.

Edited March 25, 2013 by absz (see edit history)

[wile e coyote]

Will do thanks