Thread: Throttle surging while driving constant speed

Can really only be a torque converter issue. Speed is constant. So you wouldn't assume engine related.

Apart from that a slipping clutch, not really heard of that often.

Probably find a tranny shop that can dump and flush your fluid and add dr tranny. Land Rover Spares in Mackay can put it in an airbag for you if you need it. Lots of info on new aftermarket fluids.

Thanks all, this is really helpful and seems fairly conclusive.

I had the gearbox flush and conversion 30,000km ago to the steel pan so it’s a shame it’s playing up already.

will have to cross my fingers and hope we make it to Alice springs and someone reasonable can help me there

So is a flush a temporary fix or a new TC more likely on the cards? Any idea of the costs for that?

Originally Posted by Lukeis

Thanks all, this is really helpful and seems fairly conclusive.

I had the gearbox flush and conversion 30,000km ago to the steel pan so it’s a shame it’s playing up already.

will have to cross my fingers and hope we make it to Alice springs and someone reasonable can help me there

Suttons in Alice Springs are very good and know their stuff. They should be able to help when you get there.

If you only had the trans oil done 30k ago do you know if they did a full flush , or ,just drop the sump only.

maybe its low on fluid.

Bulletman

Originally Posted by Bulletman

Suttons in Alice Springs are very good and know their stuff. They should be able to help when you get there.

If you only had the trans oil done 30k ago do you know if they did a full flush , or ,just drop the sump only.

maybe its low on fluid.

Bulletman

im not clear if they did a flush or just dropped the oil.

I do know they initially used the wrong oil and it went back a few days later for lifeguard 6 due to a vibration. From memory they also added dr tranny afterwards to help

it’s been brilliant since then and for the first two months of this trip with LOTS of towing.

I’ll give Sutton’s a bell when I get there in two weeks. Is there a way to check the oil level without a hoist?

Fault codes may give the answer which could be engine related and if g box may require a reflash to resolve.

I would not rule out an engine issue at this stage.

Is that fuel reading normal..seems a bit heavy even for towing?

That’s a good pick up, yep I’m usually running at 16L/100 for towing and was doing so for the whole trip but this also changed in the past two weeks and has soared up into the 18’s even up to 18.7

I figured this could be related to the issue above, or perhaps because I’ve been driving closer to 100km hr now that the roads are straighter whereas prior I was generally towing closer to 90kph

Jags albeit with the petrol V6 but same gearbox have had similar surging issues which were thought to be the TC but which turned out to be engine related eg dirty MAF. But yes some were TC related eg failed TC o ring. Shifting gears also changed the surging pattern prolly due to engine management...maybe dumping more fuel at higher revs/lower gears.

Diagnosis is prob the key to finding the cause.