1hz auto gearbox problem?

[nooknook]

Hi all I'm looking at buying a 105 series but it seems it might have a gearbox problem but we're not sure what it could be.
Basically when driving up a hill when you put your foot flat (even in overdrive) it will stay in the same gear for a long time then eventually slow quiet a lot then change back a gear, makes it worse going up hills than my work truck....
Does anyone know why this is or had a 1hz auto?? How does it go
I don't want to buy it and have to put a new box in it, cheers

 

[nooknook]

It's a 1999 model

 

[Tractionman]

When was the atf fluid last changed ?
Assuming this model has an auto box dipstick, what colour is the fluid, does it smell burned ?

 

[nooknook]

When was the atf fluid last changed ?
Assuming this model has an auto box dipstick, what colour is the fluid, does it smell burned ?

It seems like it's been changed recently it's fairly clean doesn't really smell burnt

 

[Tractionman]

Ok, is there a "sport" switch on the console somewhere as some other series have, this makes it hold gears for longer ?
Maybe bands in auto box slipping, but so far I'm only guessing to keep your thread alive, hopefully someone more knowledgeable will jump in

 

[nooknook]

Ok, is there a "sport" switch on the console somewhere as some other series have, this makes it hold gears for longer ?
Maybe bands in auto box slipping, but so far I'm only guessing to keep your thread alive, hopefully someone more knowledgeable will jump in

Yeah there's a power mode and an overdrive mode overdrive is supposed to make it drop back a gear faster, so higher rpm from what I know but it still seems very slow with od on.
Yeah ok is probably an expensive fix either way, cheers

 

[Tractionman]

It may not involve any expense.
Have you tried switching off overdrive and power mode/one or the other ? Flooring it uphill will provoke a response from the auto box to find its own level/confuse it, with power mode/overdrive on, i.e. it takes off like a f1, then drops back to a milk float.
Also depends if towing or carrying heavy load.
What is it like on the flat, - gear changes normal ?
I would experiment a bit more with the settings, as these can make a difference, all these need input from the driver for the auto box to 'behave'

 

[nooknook]

Yeah have tried with the different settings and seemed like it has go in it but it's just very slow changing back a gear when floored even on the flatz unless this is normal for this car, haven't really compared it to the same model so it could be normal