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Generation 4-4 Pajero NX model 2014 -

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  #1  
Old 15-06-18
Handy Andy Handy Andy is offline
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Default NX fuel usage

Hello Gentlemen
I'm searching for some help or guidance on behalf of a good mate who is having fuel issues at the moment.
I presently own a NW and have been part of the forum for years when I also had an NM exceed. My mate is away in the Northern Territory hence I'm asking for the help.

He is on his third Pajero (never an issue with the first two, or with mine ) the question is about his current NX . When purchased new, nearly two years ago, after a few weeks it started to use excess fuel (its a 3.2 auto) just as his previous Pajero's were (he is very familiar with how they behave). As he was away travelling at that time he was forced to return from the Kimberleys to attempt to have the problem resolved. At that time dealers in WA and NT were not very helpful so he bit the bullet and came home where a dealer on the south side of Brisbane (where it was purchased) investigated. I recall the vehicle was connected to computers and info sent direct to Mits in SA. After a week of checks etc the vehicle was back to normal doing less than 9 litres per 100klm. Two weeks ago I was with him in Brisbane and the car was doing 8.6 litres per 100 as we travelled on the M1

I have just received a call from him and he is presently in Katherine on his way back to the Kimberley's. Fuel usage is in the 12's per 100. He is trying to get to Darwin to get it to a dealer to have it checked once again. Of course if you attempt to tow anything you can nearly double these figures.

His previous Pajero's didn't use this amount of diesel towing or not towing

Can any of you learned gentlemen offer any advice or thoughts regarding excessive fuel usage in an NX. We are both starting to doubt the DPF and wonder does anyone else have any info in this regard.
My NW uses around 9 per 100 and 16 when towing but of course there is no DPF

Just searching for some thoughts at this stage. The car doesn't have 30,000 klm on it an is serviced regularly It drives perfectly does not lack power but limits his travel when away from City life
Thanks in advance Andy
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  #2  
Old 15-06-18
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Keithyv Keithyv is offline
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You say you were with him when it was using 8.6 l/100 or so and now it is using 12? Any difference in the way the vehicle is loaded between those 2 cases? i.e. roof racks or extra gear?

Could be a difference in fuel quality too?
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  #3  
Old 15-06-18
DaveH DaveH is offline
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A lot can depend on head winds. I remember my first trip. I got 12l/ 100k from Sydney to Cobar, Cobar to Wilcannia it went up to 14L/100k and from Wilcannia to Broken Hill 16L/100k. Beyond Broken Hill it went up to 18L/100k. I was panicking thinking something was seriously wrong. Then we turned right and the consumption went back to the 12's.
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Old 15-06-18
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Dicko1 Dicko1 is offline
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Quote:
Originally Posted by DaveH View Post
A lot can depend on head winds. I remember my first trip. I got 12l/ 100k from Sydney to Cobar, Cobar to Wilcannia it went up to 14L/100k and from Wilcannia to Broken Hill 16L/100k. Beyond Broken Hill it went up to 18L/100k. I was panicking thinking something was seriously wrong. Then we turned right and the consumption went back to the 12's.

I have the same issue when going from Cairns to Airlie Beach. Going down I get in the 12-13 per 100klm. Coming home 10-11 kp100. All due to headwind. Quite often you dont notice the headwind until you stop and get out of the car.
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  #5  
Old 15-06-18
oscaroo oscaroo is offline
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Here's a link on where the wind is going

Wind
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  #6  
Old 15-06-18
Phree_ed Phree_ed is offline
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Here are some figures from a trip I have just done but I was towing a 2550kg van. I always calculate based on fill quantity and odometer distance and yeah I know the odo is probably 5% or more out but calculating for that is not worth the extra effort.

Northside Brisbane-Caboolture-Yarraman-Oakey-Miles 14.2 L/100. Car indicator 16.4
Miles-Charleville 15.6 L/100. Car indicator 15.7
Cunnamulla-St George 16.45. Car indicator 15.9
St George-Inverell 16.38. Car indicator 16.8
Inverell-Coffs Harbour 15.69 (80% van) Car indicator 14.7
Woolgoolga-Home 14.13 Car indicator 14.2

I have always found even with my previous petrol Prado that consumption on the smoother coastal highways is better than that on lumpier inland roads regardless of wind direction.
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Old 15-06-18
spot01 spot01 is offline
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Firstly, I agree with above comments re load and wind, although I assume he is used to that by now.

How is he measuring the fuel consumption? Trip computer or manual records fill to fill? Over how many tanks of fuel has the consumption gone up? Has he been buying fuel in any dodgy places?

Sounds like the car is nearly at 30,000km? Is it still on it's original fuel filter?

Has he had the car serviced or oil changed during or just before the trip?

Unsure if the MY17 NX with DPF behaves like the earlier NS DPF cars where they had a tendency to fill their sumps with diesel fuel if they were unable to complete a DPF burn properly. Get him to check his oil level isn't overfull. Also, the fuel consumption of DPF cars increases when they are performing a burn.

It might be worthwhile him calling the dealer that fixed the earlier issue to find out what it was?
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  #8  
Old 30-08-18
nx2016 nx2016 is offline
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I an averaging for the first 32000 kms 9.6 LITRES PER 100 KM. Includes city and open road driving but no use of anything other than 2wd and 4h.
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  #9  
Old 08-09-18
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Marty V Marty V is offline
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If you sit on exactly 2000rpm in a 3.2 Pajero you will get the best economy... You'll use more even a 100-200rpm either side...

Try it...
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  #10  
Old 09-09-18
Allan2 Allan2 is offline
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Clean the MAF sensor in the top of the air cleaner. It should be cleaned every time the air cleaner is changed. Super Cheap sell the cleaner, I suppose any accessory shop will have it. Follow the instructions on the can.
Allan.
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