fuel ecomony on a 2004 GU 3.0TD Auto

r u towing????????????????/

no, just the car and it has not changed since new other than slightly larger tyres about 30,000ks ago, BFG AT 285-75-16, the economy has slowly gotten worse over the last few months. I used to get better fuel ecomomy on a trip than around town but now its the same. I have around 66,000ks on the clock.

Hi Ben,
My economy went from low 11's to mid 12's after fitting 265/75's. (Same car as yours) I'd say it was probably due to the fact that the speedo is now reading correctly.
Cruise control will do it in hilly country also, and so will driving without the converter locked.
Chaz

I do have a Nissan roof rack on, it has been there since new when tha beast was not so heavy on fuel,

Have you also lost any power compared to before? Have the air flow sensor checked, its not part of any service and you will have to ask specifically to have it done.

Cheers

Captain

G'day Ben, might be an idea to unscrew the air flow sensor and make sure it's clean. Local Nissan dealer told me this device can cause all sorts of problems, including poor fuel economy.

It's located on the front of the air intake tube that leaves the air cleaner assembly and secxured with 2 "security torx screws" and has an electrical connector attached to it.

There is a bullitin on the Ryco Filter website stating that people using "wet filters" (finer filters and the type) were having troubles because the wet media (filter oil) was gradually sucked through and coated teh sensor causing false readings and upset running. This covered all the GU Patrols. Ryco has introduced a new "dry" media filter with 90% more media in it especially for Patrols, but I don't know if it is better/worse than the original filters.

Hope this helps.

Cheers

Your larger tyres will make the odometer say you have travelled less distance than you actually have, so that it will appear the same amount of fuel is now not taking you as far. I have a 4.2 patrol with 265/75 and find that although the speedometer is fairly accurate the odometer is about 10% out. It says 100km when 110 have been travelled. If this is common amongst patrols yours will be even worse with larger tyres again. This mob make an adaptor that supposedly fixes this problem, though I have never used one so don't know how good they are.

check your tyre pressure

also, head winds will knock your consumption around a bit too.

Hi Guys,

Have just arrived back late last night (1000k's in a day), only jusr reading some of the posts now, I will look into the odomoter and the air sensor today, the car has done quite a bit off road and it well could be dirty, it will just add to the long list of issues that I have had with the car, we have at the moment a love hate relationship, I love it and hate it at the same time.... It has been to have things fixed over the last 20 months 16 times.
Thanks for all the imput, its appreciated.
Ben