I have a 1995 v6 nissan Auto 4x4 which uses excessive fuel. Tank range around 350 Km. I noticed if I freewheel down a steep hill it appears to slow down, not speed up. Is it a possible wheel bearing or break problem. Desperate to solve the problem
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Re: Uses excessive fuel
Brakes could be binding or hand bake cable holding on but you think youd smell burning brakes if that was the case!What condition is the oxy sensor in ,maybe carboned up and contaminated which can tell the engine management to supply more fuel than required.is the air filter air box in good condition and air box lid securely fastened.Should be sealed from air box to throttle body If the air filter is clogged and dirty that can lead to excess fuel consumption.Have you installed any injector cleaner in the fuel tank.cleans up dirty injectors thst can cause excess fuel consumption.
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use the first D. this is overdrive. it gives you the best fuel economy. The second D downshifts the transmission into a lower gear. this would be used when climbing a steep hill (it keeps the transmission from hunting between gears) or descending an equally steep hill as it would help slow the car without using the brakes.
Without knowing the car.It should use about 16lt per 100km.No van.Just moving around.Ok.The van is going to use more.That model does use fuel but not as much as you quoted.You said no towing its about 21lt.Thats cause there is too many traffic lights in melbourne.:)I'am from Gold Coast.The injectors can be the cause of bad milage.Dirty or playing up.A bad air filter is a common problem.Because you said it was a prob. on fuel and gas,I would start looking at the inlet side of things first.The filter?Yours is efi.Get the inlet flow meter checked and then the exhaust oxygen sensor.If one is out,it makes the other do the wrong thing.Like pump more fuel.I hope this is of help
It depends: how steep are the hills? Assuming you have the standard 4-speed or 5-speed gearbox, it's likely that the tiny engine (built for economy, not for power) is simply not generating enough torque to pull the car up in high gear. Have you tried simply downshifting?
If the problem truly is the engine losing power and not just lugging due to being in too high a gear on a steep grade, you should check your fuel pressure and you may also want to check the condition of the fuel pump and feeder lines inside the gas tank. A 20 year old car will probably have some disintegration of the feeder lines, they may even be partly broken off inside the tank resulting in poor fuel flow, or disintegrated rubber may be gumming up the strainer or the pump itself. Personally, I'd replace the fuel lines, fuel filter and if low pressure still exists, the fuel pump as well.