Help help on FC

[vypez]

i had a talk with one of our TLC laojiao today... Joel.

He said the best is we run all the way until the fuel indicator lights up, and then we go and pump to measure. By right can squeeze 40L. He said his is mostly city driving, can clock 600km on 40L. 15km/l

Maybe can try this method see how the FC works...

bro, his right foot maybe VERY light leh.

yours.... lead footed.

i think average is 500km / 37L, thats for me... 50% hw, 50% city, LOTS of heavy flooring. =]

[Jazz]

so retraining ECU includes resetting it or juz drive and let it recognise my pattern?

Better go for reset, some advise you against it isn't driving at all.

[ahhoy]

For me, i will pump when the fuel indicator lights up. After filling up, write down the quantity of fuel you pump. Wait till the fuel indicator lights up again, write down the distance travelled. Do the same for 10 full tank. Total up the distance travelled and total fuel quantity used, than use total distance tavelled divided by total fuel quantity used, u will be able to tell 1l of fuel can bring you how far.

[galatica]

Mine is an OPC. Just hit 14K mileage and notice that the FC has improved from the 13.5K point. Used to clock between 370 - 400km for one tank. Now hit 400km at the 3/4 tank bar. Hope this continues. I usually rev between 2 - 2.5K rpm. Have spark bridging done as well.

[drixsome]

Advantages of the CVT

Engines do not develop constant power at all speeds; they have specific speeds where torque (pulling power), horsepower (speed power) or fuel efficiency are at their highest levels. Because there are no gears to tie a given road speed directly to a given engine speed, the CVT can vary the engine speed as needed to access maximum power as well as maximum fuel efficiency. This allows the CVT to provide quicker acceleration than a conventional automatic or manual transmission while delivering superior fuel economy.
extracted from http://cars.about.com/od/thingsyouneedtoknow/a/CVT.htm

i believe there may be a slight difference between CVT and AT, and this might lead to differences between our CVT and AT FC experiences here. just note that we might not be having apple-to-apple comparison though, correct me if i am wrong!

[shawnie]

its kind of disappointing to have low high FC because i travel from bukit batok to pasir ris everyday... maybe this is my first tank and cant really see the difference.... maybe i will try 95petrol too... damn pissed anyway, have 1 week driving my car, lorry driver chipped off my paint near the pax fender... kns

[Jazz]

its kind of disappointing to have low high FC because i travel from bukit batok to pasir ris everyday... maybe this is my first tank and cant really see the difference.... maybe i will try 95petrol too... damn pissed anyway, have 1 week driving my car, lorry driver chipped off my paint near the pax fender... kns

Bro, sad to hear that kena chipped off your new ride. Anyway dun be too mindful about the FC, just enjoy your ride first. 

[shawnie]

bro jazz... thanks!!

[clarence]

Better go for reset, some advise you against it isn't driving at all.

Hi Shawnie,

I have called Tan Chong to confirm the facts.

The Service Advisor told me there is NO NEED to send the car in to reset the ECU.

The ECU will re-adjust and automatically reset itself to your driving habits after a few tankfuls of petrol.

But if you do want to take Alex's (Jazz) advise to send your car in to Tan Chong to reset the ECU, do note that there are charges involved.

[clarence]

For me, i will pump when the fuel indicator lights up. After filling up, write down the quantity of fuel you pump. Wait till the fuel indicator lights up again, write down the distance travelled. Do the same for 10 full tank. Total up the distance travelled and total fuel quantity used, than use total distance tavelled divided by total fuel quantity used, u will be able to tell 1l of fuel can bring you how far.

ahhoy,

It is advisable to top up your tank when your fuel indicator is at the 1/4 level.

This is so as not to stress the fuel pump over the long term.

The higher the fuel level in your tank, the higher the pressure and the fuel pump need not work as hard.

Just imagine a water dispenser. When it is almost empty, you will notice that the water comes out slower.

An almost empty tank of petrol also means that all the dirt at the bottom of the fuel tank will be sucked by the fuel pump, but all these dirt will be filtered by the fuel filter which means you have to change your fuel filter more regularly.

[jliow]

Hi Guys just wanna share my opinion

First, the car is owned previously, so do check out the filters, and perhaps flush engine, not much details I had, but these are plausible things I would do. in short, ensure the car is as stock is as possible on the components. this inc ensuring the tyres and rims are stock or near stock spec

Next, regarding fuel, I find different brands of fuel have different sorts of additives. some cleaner, some more power, some I dun know if any additives existed. So different brands of fuel in my opinion will give you different results and cost factor. when I took my new car, i remember vividly the car salesman of 25 yrs with TCM said to me as I start the engine "eh dun use 92, will not be good for your car engine", which on the 3rd mnth I disregarded his advise and when ahead with 92 fuel, I got a shock, 60KM for just a quater, at E light it was 320KM, further verified with another 3 full tanks relative result observed. reverting to my "normal" brand, I consistently get same result, which was like "spoilt", so I went for the "branded" cleanest and premium priced fuel for 2 full tanks before acheiving normal FC with my regular fuel

with regards to FC reading I disagree the practice of using a quater mark as a good indication. the "float" in the tank for reading fuel status is always in "unstable" state, meaning when U read your fuel meter, please ensure U are really on a flat plain, U can do a simple verification, when your E light just comes on, find a steep ram or sometimes a slope, and u will notice the E light goes away, I've also noticed on a bloody hot day, the E light seems to come on rather quickly and disappears when I collect my car in the cool evening and only to reappear again when I completed a 25KM journey

Our car weighs higher when fully fueled, as the car uses fuel, the car weight goes down gradually, thus the FC will range across from a fully fueled status to the last 10L, this is no rocket science but straight forward engineering facts, where the FC is in propotion to the overall weight of the car, attributed by how much fuel is left vs the distance travelled plus engine idle.

As for ECU, it constantly "learns" your driving pattern, takes about a few days to adapt it. Anyway when I do serviceing in TCM, I was always reading a slip given that says "ECU RESET DONE", which I find it annoying as the car needs to readapt to my driving style which in the midst cause me to have higher FC. So dun have to waste time and money for the sole purpose of resetting ECU.

So in summary, just ensure the car is stock, well maintained, optimally fueled and enjoy.

[drixsome]

Hi jiliow, thanks for sharing your thoughts but can I just point out about how you said:

"Our car weighs higher when fully fueled, as the car uses fuel, the car weight goes down gradually, thus the FC will range across from a fully fueled status to the last 10L, this is no rocket science but straight forward engineering facts, where the FC is in propotion to the overall weight of the car, attributed by how much fuel is left vs the distance travelled plus engine idle"

I can't agree more with you on this which is why I sometimes psychologically make myself feel better by thinking that running my car on half a tank is more "fuel efficient" for point a to point b commuting.

Also carrying a full tank of fuel adds load and is akin to running SOC training with 2 full water bottles when you only can drink the water after you finish your final run down..... 

[clarence]

There are pros and cons on driving with a full tank or less than 1.2 tank.

Full tank 
- Ensures your fuel tank will not rust
- Your fuel pump has an easier job due to the pressure from the fuel
- Heavier car which translates to a little higher fuel consumption (neg).

1/2 tank or less
- Lighter car since more economical
- Fuel tank may rust, but this is not an issue if you drive daily
- Fuel pump works harder

[ahhoy]

ahhoy,

It is advisable to top up your tank when your fuel indicator is at the 1/4 level.

This is so as not to stress the fuel pump over the long term.

The higher the fuel level in your tank, the higher the pressure and the fuel pump need not work as hard.

Just imagine a water dispenser. When it is almost empty, you will notice that the water comes out slower.

An almost empty tank of petrol also means that all the dirt at the bottom of the fuel tank will be sucked by the fuel pump, but all these dirt will be filtered by the fuel filter which means you have to change your fuel filter more regularly.

Hi Clarence, thanks for the advice.

[shawnie]

wow u guys are the best... feel so enriched!! haha

[nakshire]

There are pros and cons on driving with a full tank or less than 1.2 tank.

Full tank 
- Ensures your fuel tank will not rust
- Your fuel pump has an easier job due to the pressure from the fuel
- Heavier car which translates to a little higher fuel consumption (neg).

1/2 tank or less
- Lighter car since more economical
- Fuel tank may rust, but this is not an issue if you drive daily
- Fuel pump works harder

moral of the story? pump your petrol to full when empty! LOL

[Jazz]

There are pros and cons on driving with a full tank or less than 1.2 tank.

Full tank 
- Ensures your fuel tank will not rust
- Your fuel pump has an easier job due to the pressure from the fuel
- Heavier car which translates to a little higher fuel consumption (neg).

1/2 tank or less
- Lighter car since more economical
- Fuel tank may rust, but this is not an issue if you drive daily
- Fuel pump works harder

What and where the logic that half tank fuel pump work harder ? Do you know where is the fuel pump located ?

[drixsome]

moral of the story? pump your petrol to full when empty! LOL

haha! i wanted to stick the "man" sticker on my fuel cap door during cny!

[MadMatty]

Hi bro, dun worry, for the 1st bar, it normally to hit between 70 - 80 km for latio! After the 1/2 tank mark, the fuel needle will move quite slowly! I can actully hit 450-480km untill the Refill Tank Light lights up.

My Latio FC has been dropping quite drastically after each servicing. I just completed my 30K servicing. I noticed that the low fuel indicator normally lights up after 35Ltr and for me initially I have only hit about 420km. But now it has dropped significantly from 400km to 380km traveled. My driving pattern has not changed all these while. Yet the FC has. My calculation of FC is based on the mileage traveled/amount of fuel from last top up. It has been doing about 11.5km/ltr average but last few rounds dropped down to less then 11km.  I used RON 92 for my fuel as I found that were no significant difference between the various grade. Complaining to the those technician doesn't seems to help much. Now I guess I am stuck with a lemon of a car. One thing I know for sure, my next car definitely won't be another Nissan.

[clarence]

Perhaps you could request Tan Chong not to reset the ECU after each servicing so that your ECU does not have to re-learn your driving habits.