The Navara fuel consumption problem is solved. (We hope).
The last tank full around Goolwa, on flat ground with good weather, returned 11 litres per hundred kilometres, previously it had been between 13 and 15. We had the air conditioner running most of the time and they tell me that can cost 1 to 2 litre per 100 k, so it looks like we are back to the expected performance for the Navara.
I have been complaining about the poor fuel consumption for the last 50,000 km, and despite several attempts Unley Nissan could not find anything wrong, even hinting it was my driving that was the problem. They reflashed the fuel pump twice ( at $130 a time), I have had it at a specialist diesel mechanic and finally at Turbo Tune. The Dyno results are shown in the graph. Killowat hours are shown on the left scale, indicating 15 Kilowatts missing, that's about 20 horses in the imperial system. On the right hand scale, using the lower set of graph lines, is the torque in Newton Metres. There is a big increase in torque at the lower rev range (bottom scale) which measures the pulling power when starting from stationary.
Total cost to find the problem-
Cost of investigations and resultant work about $1000.
Cost of excess fuel at 3 litre per 100k for 50000km at $1.50 per litre is $2250
Total cost is $3250.
Cost of cure is about $1 worth of electronic contact cleaner on the hot wire air flow meter.
It is worth a spray each time you change your air filter, it could save you from feeding 20 horses that are not doing any work!
Friday, December 21
Friday, December 7
Goolwa
OK, so it is only 70 ks up the road, but we won a holiday auction here so we are getting it at a good price. There is another reason, I have been chasing the terrible fuel consumption problems with the Navara and this seems like a good chance to test the latest development.
I took the Navara to Turbo Tune for a dynomometer test, they found about 20 horses had escaped from under the bonnet. The culprit was the air flow monitor that was dirty, so it was giving wrong information to the computer that controls the Air to Fuel Ratio. A good clean and the horses returned. The Navara feels better with more low end torque and it will cruise in overdrive without dropping down a gear at the slightest hill. The big test will come when I fill the tank up.
I took the Navara to Turbo Tune for a dynomometer test, they found about 20 horses had escaped from under the bonnet. The culprit was the air flow monitor that was dirty, so it was giving wrong information to the computer that controls the Air to Fuel Ratio. A good clean and the horses returned. The Navara feels better with more low end torque and it will cruise in overdrive without dropping down a gear at the slightest hill. The big test will come when I fill the tank up.
Wednesday, November 7
Warrnambool
We are at Warrnambool, dog trials at the start then a week of holidays. Kathy won a Holiday Auction so we got 10 days at half price. The Pic shows the view over the Bay of Martyrs which is part of the Bay of Islands National Park at the end of the Great Ocean Road.
The saga with the van continues, it was booked in for a service after the Longreach trip, but after 12 days, nothing had been done so we took it back and I did the bulk of the repairs and servicing needed. The wheel alignment was done by Complete Laser Wheel Alignment. Both wheels were out and needed re-adjusting for toe in and castor/camber angle.
The fuel consumption for the Navara is still a problem. We had a week end at Mount Gambier for the trials, (That's why I had to get the van back from the Dave Bensons, the non-service agent, their idea of "customer service" is the mare service provided by the stallion). We left the van at Mt Gambier, drove home and got 12 litres per 100 Km, it should do better than 9. On the way back to the Mount, it did 13. Nissan say there is nothing wrong, but 40% worse than their advertised rate shouts out something is wrong.
We will be taking the Navara to an independent Nissan mechanic when we get back.
The saga with the van continues, it was booked in for a service after the Longreach trip, but after 12 days, nothing had been done so we took it back and I did the bulk of the repairs and servicing needed. The wheel alignment was done by Complete Laser Wheel Alignment. Both wheels were out and needed re-adjusting for toe in and castor/camber angle.
The fuel consumption for the Navara is still a problem. We had a week end at Mount Gambier for the trials, (That's why I had to get the van back from the Dave Bensons, the non-service agent, their idea of "customer service" is the mare service provided by the stallion). We left the van at Mt Gambier, drove home and got 12 litres per 100 Km, it should do better than 9. On the way back to the Mount, it did 13. Nissan say there is nothing wrong, but 40% worse than their advertised rate shouts out something is wrong.
We will be taking the Navara to an independent Nissan mechanic when we get back.
Monday, September 24
Alice Springs
We always stay at Blatheskite park when we stay in Alice Springs, its the showgrounds. We are allowed here because we have dogs, and the dog training grounds are here so we are camped right outside the gate. The DOGS sign that looks like it is on the roof of the Navara in the photo is on the fence round the dog grounds.
The trials are over, we are staying a couple of days to be tourists, then we will head for home.
I put the spare tyre on the caravan to replace the one that has worn unevenly so we can get home. We felt it was better to wreck a $150 tyre due to scrubbing rather than have the worn tyre blow and wreck a $60,000 caravan.
The trials are over, we are staying a couple of days to be tourists, then we will head for home.
I put the spare tyre on the caravan to replace the one that has worn unevenly so we can get home. We felt it was better to wreck a $150 tyre due to scrubbing rather than have the worn tyre blow and wreck a $60,000 caravan.
Tuesday, September 18
Tennant Creek
We got to Mt Isa last night then set out early to get to Tennant Creek. One tyre on the Navara was a pound under pressure when I checked it, so after filling up the diesel tank at the Shell servo, I looked for the air line. "Its Broke" said the check-out chic," Try the BP up the road, or the Mobil, or the truck stop". The truck stop was miles away, the Mobil went out of business last month and the BP had an airline but no pressure gauge. I managed to blow up the tyre and checked it with my own gauge, then left Mt Isa and set of across the Barkly later than we intended. The pic shows the four of us at the Barkly Homestead where we stopped for lunch. Having traveled across the Barkly during my Telstra days, I expected to be traveling in near desert conditions, but the last few years have been wet so it was like traveling through park lands, with lots of thick undergrowth, green trees and shrubs with lots of spring flowers.
We got to Three Ways (where Tennant Creek town was planned to be in the 1860s, but the beer wagon broke an axle crossing the creek so the miners all moved down the road and set up camp where the beer was, and so the town grew there) I set up the van in the van park, and I noticed a van tyre was wearing very unevenly. Looks like I will have to get the van checked before we leave tomorrow.
We got to Three Ways (where Tennant Creek town was planned to be in the 1860s, but the beer wagon broke an axle crossing the creek so the miners all moved down the road and set up camp where the beer was, and so the town grew there) I set up the van in the van park, and I noticed a van tyre was wearing very unevenly. Looks like I will have to get the van checked before we leave tomorrow.
Sunday, September 16
Longreach
Longreach is famous for being the original base of QANTAS and they have the QANTAS Founders Museum with the history of the airline. The pic shows us standing by one of the original QANTAS planes that was actually built at Longreach.
It has been an eventful journey to get here. Hannah got something in her eye in Charleville and we stayed an extra day so that she could get treatment, then when we were walking the dogs before leaving Charleville, Hannah pulled Kathy off balance causing her to fall. This gave her scraped knees and elbows, and a hard hit on her left hand. The swelling and pain in her wrist did not go away, so today we were visiting the Longreach Hospital. There were only nurses in attendance, the doctor was at the other end of an internet connection using the medical equivalent of Skype. The conclusion was her hand is badly bruised, but if the swelling and pain are still there in 5 days, go for an X-Ray. Reminds me of the old doctor joke, "Take one of these pills before you go to sleep tonight, and IF you wake up in the morning, take another one"
It has been an eventful journey to get here. Hannah got something in her eye in Charleville and we stayed an extra day so that she could get treatment, then when we were walking the dogs before leaving Charleville, Hannah pulled Kathy off balance causing her to fall. This gave her scraped knees and elbows, and a hard hit on her left hand. The swelling and pain in her wrist did not go away, so today we were visiting the Longreach Hospital. There were only nurses in attendance, the doctor was at the other end of an internet connection using the medical equivalent of Skype. The conclusion was her hand is badly bruised, but if the swelling and pain are still there in 5 days, go for an X-Ray. Reminds me of the old doctor joke, "Take one of these pills before you go to sleep tonight, and IF you wake up in the morning, take another one"
Wednesday, September 12
Charleville
The drive to Charleville was long and full of wild life, and death. There were animals on or near the road, the pic show some emu chicks close to the side of the road with Dad looking on. (Emu mums are the ultimate feminists, they lay the eggs, give them to Dad and take off for the emu equivalent of a singles bar). Apart from the emus, there were kangaroos, goats by the hundreds, sheep, cattle, lizards, snakes and a couple of pigs. Road kill all the way made the trip a bit smelly, and dodging carcasses became a full time occupation.
We stopped at Baileys Bar caravan park. After we said we knew Dave Butcher but were not responsible for any of his debts, they let us in and gave us a really good site.
We will be here for two nights, so tomorrow we will be tourists for the day.
We stopped at Baileys Bar caravan park. After we said we knew Dave Butcher but were not responsible for any of his debts, they let us in and gave us a really good site.
We will be here for two nights, so tomorrow we will be tourists for the day.
Subscribe to:
Posts (Atom)







