Nm35 Fuel Gauge Weird?

[garetb16]

Hi guys

have owned my new NM35 for a week now and tonight i filled it with fuel for the first time.

the gauge was a fraction over the bottom E line and it only took 53 litres.

i thought at the time how odd that was and paid - after starting the car i was waiting for the level to rise

but it never went past 3/4 i then thought maybe i didnt fill it properly and it may have just clicked off prematurely

so i pulled into the next servo to top it up and i couldnt get more than half a litre into it.

i SMS's the previous owner and they have explained that they have never experienced it.

so either the gauge is way wrong or the tank has had lapand surgery.

im not retarded and know how to fill a car with fuel

anyone experienced this?

[scotty nm35]

I have similar issues where the light is on and still a quarter tank left. If I switch off the car and back on, it will display 1/4 again. Its just the sender contacts wearing I guessed, although they looked fine when I installed the Tomei pump.

[garetb16]

I have similar issues where the light is on and still a quarter tank left. If I switch off the car and back on, it will display 1/4 again. Its just the sender contacts wearing I guessed, although they looked fine when I installed the Tomei pump.

there is a fuel light?

maybe im best to keep driving until i see it turn on. i have got it to E once already this week and didnt notice a light.

[andy65b]

my light always comes on with 50km to go out of the tank, based on the fuel usage screen.

It usually takes 60-65 litres at this stage.

[Cephas]

Generally fill up when the light comes on... never put more than 60l in the 80l? tank.

Fuel gauge issues seem like a common thing.

[zei20l]

yeah mine is weird as hell

on E and below, ive never put more than 72L in. mostly its under 70L

[mxfly]

I've done the unthinkable and ran the car for another 80 kms after the fuel usage screen tells me there is -- kms left. I then filled up the entire tank to see how much it will take. 76 liters, scouts honour. She still had a few more kms out of her

I think Nissan gives you an incredible amount of reserve to drive a lot further lol.

And I agree with the gauge as well, my warning light goes on nowhere near the E.

[mxfly]

Oh and when I did that 80km stretch, the needle didnt move a single micrometer and was well below the E level. At that point I decided not to risk it lol.

[garetb16]

im taking it away this weekend for a country run. 480kms in one direction and then home a few days later.

prob not a good time to experiment when im out of the city.

when im home after i plan to drive it until the light comes on. cos i think my gauge is just rooted. hopefully the light is more accurate.

Oh and when I did that 80km stretch, the needle didnt move a single micrometer and was well below the E level. At that point I decided not to risk it lol.

[Bis-e Bee]

Mine is just the same, nothing like driving along the F3 with the fuel light on and the needle past Empty and waiting for the cough and splutter lol

The few times I have done it she has made it through to a servo on pennant hill road, so there must be a nice little reserve of fuel.

[iamhe77]

im taking it away this weekend for a country run. 480kms in one direction and then home a few days later.

prob not a good time to experiment when im out of the city.

when im home after i plan to drive it until the light comes on. cos i think my gauge is just rooted. hopefully the light is more accurate.

Just remember that when the light comes on, the needle is nowhere near the real empty mark.

You can see a little "rest" for the needle about half way between the tip and the base, when the needle is resting on this (it will be below the "E" mark) you should be getting concerned.

Oh, and I am with Eugene on this one. You should be able to get ~100kms after the light has come on... or possibly more if cruising

[pixel8r]

There was a thread recently about this. Basically my guage does weird things all the time.

Lately its been slowly dropping to 1/2 way then races down to 1/4 very quickly and then slows down again around the 1/4 mark and seems to fluctuate up and down from that point on. sometimes it jumps almost 1/4 up during a longer drive somewhere...kinda cool watching the fuel guage go the wrong way but unfortunately it obviously doesn't work that way in practise.

The tank should hold 78L or so. My empty light comes on around 60-65L so yes there is still a fair bit of reserve even when the light is on.

[scotty nm35]

Thats exactly what mine does. When I was removing the pump, I saw a reason for this, the tank is actually 2 tanks because of the tunnel, and there is only a small hose linking them together which takes time to equalize.

[garetb16]

Well I'm away interstate with the car at the moment, was full when I left and have nearly travelled 600kms the gauge is dead empty and touching the needle, I'm still waiting for the fuel light to come on. Be interesting to see if it does, I will have to refill tomoz to drive home so my little test won't get to be complete but I'm tipping I should get to at least 700 kms before needing to fill.

Will re test over the next full tank.

[Bis-e Bee]

Well I'm away interstate with the car at the moment, was full when I left and have nearly travelled 600kms the gauge is dead empty and touching the needle, I'm still waiting for the fuel light to come on. Be interesting to see if it does, I will have to refill tomoz to drive home so my little test won't get to be complete but I'm tipping I should get to at least 700 kms before needing to fill.

Will re test over the next full tank.

As previously mentioned in this thread the light *should* come on when the system estimates there is a range of 50km's left in the tank.

If you have a pop-up information screen you can check the current range which is based on the average usage.

If your right on empty the light should have already come on, perhaps the bulb is blown or something? Or your fuel tank is way out and there is still over 50km's left in the tank. However if you have traveled 600kms you would be on empty so something is up, might be worth getting it checked out.

I've got the japanese nav disc in mine and the nice lady tells me in japanese when it's time to consider a fuel stop.

[garetb16]

Well I filled up and drove home today, by this stage the car had travelled 620kms and it only took 64 litres so I'm estimating that I could have probably travelled another 100kms until the light came on, pretty happy with the economy obviously most of that is highway driving but I had a full boot and 4 adults in the car and was also giving it the odd squirt in boost

[Bis-e Bee]

Well I filled up and drove home today, by this stage the car had travelled 620kms and it only took 64 litres so I'm estimating that I could have probably travelled another 100kms until the light came on, pretty happy with the economy obviously most of that is highway driving but I had a full boot and 4 adults in the car and was also giving it the odd squirt in boost

Yours is extremely fuel efficient then, perhaps that is due to mine having the V35 Powerduct which allows more air flow into the airbox.

I can't wait to finally get the ECU remapped for fuel efficiency, be interesting to see how much I can get out of a tank then.

[garetb16]

I currently have a pod filter fitted, but am about to switch back to the airbox with a blitz filter, I'd say that it should really be more efficient with more intake cold air

[iamhe77]

Well I filled up and drove home today, by this stage the car had travelled 620kms and it only took 64 litres so I'm estimating that I could have probably travelled another 100kms until the light came on, pretty happy with the economy obviously most of that is highway driving but I had a full boot and 4 adults in the car and was also giving it the odd squirt in boost

Yours is extremely fuel efficient then, perhaps that is due to mine having the V35 Powerduct which allows more air flow into the airbox.

I can't wait to finally get the ECU remapped for fuel efficiency, be interesting to see how much I can get out of a tank then.

Highway travel, everyone should be getting 10L/100 or better.

Maybe it has more to do with your right foot control than anything Steve (I too have a Powerduct, a CAI into the bottom of the airbox and a fisher intake, so I don't think you can realistically blame the "extra air" for your sub-par fuel economy - or am I missing the sarcasm? )

Edited March 14, 2010 by iamhe77

[Bis-e Bee]

Highway travel, everyone should be getting 10L/100 or better.

Maybe it has more to do with your right foot control than anything Steve (I too have a Powerduct, a CAI into the bottom of the airbox and a fisher intake, so I don't think you can realistically blame the "extra air" for your sub-par fuel economy - or am I missing the sarcasm? )

...well I would like to think the power duct was an effective add-on, given it's high price

yes, yes, once again Nissan bends another person over