Hi
Hope some one can help me please, i have a 2005 4.2 Supercharged RRSPORT - Been very good on fuel in the past considering a 4.2 - no change in driving styles, however since my battery died on me whilst away on holiday for a few days and managed to jump start it - the fuel consumption has been very heavy - she is also staying up in the higher revs for longer on gear changes (even when not in sport setting).

I assume that when i jump started it, i must have reset the computer and change the fuel economy settings??? Or the previous owner had the cars computer chipped, which was reset whilst jump starting.

No fuel leaks anywhere, tyre pressures are perfect - i even resort to switching off the air con to save on fuel.

I have booked it into a landrover dealer next week so they can look at it for me, but im not sure if Landrover offer a computer chipping to improve fuel economy, do they? - i would have thought it is a third party add on???

Im not sure what it could be??

Any thoughts anyone?

Thanks

The chipping thing is unlikely - as there aren't much benefits to purely remapping the SCs. The general approach there was also upgrade the pulley etc etc.... but it's not with a view to increasing economy, the average SC owner doesn't tend to worry too much about fuel costs as it goes with the territory

The issue you report is an odd one though and not one I remember anyone else talking about. Others may have ideas though, so sit tight

It's likely to be caused by a potential fault in the engine management somewhere, maybe caused by your jump start, maybe not - as its booked into the dealer this is the best place for it. Let us know what transpires.

Welcome, btw  

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Do you still have Land Rover Assist cover? AS the car broke down it might be worth asking them to come out and stick their diagnostic laptop into the car's brains to download the fault codes.

You could also try phoning/emailing one of our forum sponsor,Charles Hurst Park Royal (aka CHPR) and speak to Paul Keating the service manager for some pointers. Tell him that you have come from RRSport.co.uk forums.

Just a thought, but when the dealer disconnects the battery at a service the gearbox ECU looses it's memory and you have to start retraining it to your style of driving which can take a couple of weeks for it to adapt. 2020 Pangea Green 1st Edition D240 New Defender 110 is here and loving it
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Also in my garage is a 1996 TDi300 Defender 90 County HT made into a fake CSW

Thanks for all your help so far - i will let you all know how i get on at dealership - i will give Land Rover assist a call now aswell

Could well be the gerbox ECU - Didnt think of that!!!

Any other thoughts please let me know

Cheers

all sorted now

Faulty air intake valve - now just have to do 200 miles for the ecu to adjust to my driving style

Getting 16mpg at the moment as opposed to 10mpg last week



Thanks for all your help

Cheers

Isn't 16MPG really good for the SC? I thought it was approx 12MPG.

Yep, 16mpg isn't too bad for the SC  

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shmoogle wrote:

Yep, 16mpg isn't too bad for the SC

I think the way I drive i'll get about 8MPG!

Might be the ECU need to refresh since the battery went off last time. This is what Land Rover told me last time...