Surf 3.0ltr Automatic Box Modifications

[Truckbitz.co.uk]

Anyone ever messed about with the auto gearbox in a surf. Mine's driving me nuts, I've recently bought this 3.0ltr surf and the autobox doesn't lockup until 50mph.

I thought my previous 2.4 surf was bad enough at 40mph but 50 is rediculous.

I'm desperate for any info on modifying the lockup speed before the fuel bill forces me to think about moving this truck on in favour of something manual !.

I'll be towing a powerboat over to the Welsh coast quite a few times throughout the summer months and its going to be a nightmare with a 50mph lockup. I only swopped the previous 2.4 surf because I thought this new one would be better up over the Welsh mountains.

[jamesholden]

The gearbox will stay in a lower gear if it enables the car to be driven in it's torque range. If it's not changing up until a certain speed, it's because it's the most efficient gear for it to be in.