Okok, I ask someone to check again... cause I have no brother, my dad dunno all these.. T.T
I bought this car second hand year 2012... all the while not mistaken about 380 only... now gets even lower til my pocket pain only i worry... its' my fault ler i know... cause didn't maintain car... but i always bring to service and all edi... T.T

BTW... do you know roughly what other reason that may cause high FC for vios? I change gear oil edi. Service my car too.

Mechanic said mounting rosak but will not affect anything just that the car shake badly. tyre must change, nothing else liao... no mechanic could tell what happen.. i went 2 mechanics edi/...

1) Drive constant speed 90km/h. OD lights on. hear the engine sound and see the RPM meter.
2) Drive constant speed 90km/h. OD lights off. hear the engine sound and see the RPM meter.

Choose the setting with lower engine sound and lower RPM reading.

find a clear open highway......
1)test 1, od button clicked (light on)
-try drive at around 80 kmh (or whatever the speed limit is, faster = more noticeable)
-maintain said speed (try maintain the same speed aka needle no move, keep it at the same speed)
*to know what speed you are driving at, check your speedometer (the one with km/h)
-take note of the rpms (remember the figure)
*to know what the rpms are, check the tachometer, the meter with the rpm
-tabulate result
example: result: at 80 km/h, od light on, rpms are at around 3000rpm/3krpm

2)test 2, od button clicked again or 'disabled'(light off) (whatever you want to call it, select the other setting)
-try drive at around the same speed as before
-again, maintain said speed (try maintain the same speed aka needle no move, keep it at the same speed)
*to know what speed you are driving at, check the same meter, your speedometer (the one with km/h)
-again take note of the rpms (remember the figure again, do not confuse it with the other figure)
*to know what the rpms are, again check the tachometer, the meter with the rpm
-tabulate result
example: result: at 80 km/h, od light off, rpms are at around 2500rpm/2.5krpm

- the mode where you achieve lower rpms for the same speed... stick with that mode....


***examples are just examples u might not get those figures, just examples..... go forth and post your findings

edit: good luck

i honestly cannot make it any easier than this



eik whylah i type long version

This post has been edited by lsm1991: Jan 11 2017, 11:29 AM

I'm no expert, but check these 2 basic first. If all good then it might be relating to the internal parts of your engine.

EO change on time? if use semi syn, around 5-6k odo must change. if use fully syn up to 10k odo then change. If no change on time, dalam engine sudah berat because it's not lubricating the moving parts good enough.

changed to bigger sport rim? bigger s/rim makes your car heavier

driving style? city drive everyday jam also contributes high FC

very simple dude
try crusiing on the same speed , on/off the OD and monitor RPM
which ever go lower RPM which mean tat 1 save fuel

Leave it switched on I.e. No light in dashboard

dont play2. mine the new one with cvt 7 speed...final 2 gear can beat merc.

nowadays all cars are auto-transmission, means the car will automatically change the gear for you depending on the speed you are driving.

1. car starting to move (i.e. 0km/h - 15km/h), need more full push power, so the car will automatically choose low gear (gear-1)
2. when car moving slowly (i.e. 16km/h - 30km/h), the car moving got a bit of momentum dy but momentum just a bit, so still need strong push power but less than full pull power, the car will automatically change from gear-1 to gear-2
3. when car moving a bit faster (i.e. 31km/h - 50km/h), the car moving with some momentum dy, so need less push power, the car will automatically change from gear-2 to gear-3
4. when car moving 50km/h and above, the speed of the car with momentum is also helping to push the car, so need least push power, the car will automatically change from gear-3 to gear-4
5. when you slowdown due to traffic ahead (i.e 31km/h - 50km/h), momentum reduced, need again more push power, car automatically change your gear from gear-4 to gear-3

So the gear number is depending on how fast you are going and how much push power you need, if wrong gear number vs. needed push power, the car will not have enough power to move, this will only happens on manual-transmission gear car, like using gear-3 to start moving a car (0km/h - 15km/h), the car engine will die immediately.

so auto-trasmission car (not those CVT type), normally will have 4 gears (gear-1, gear-2, gear-3 and gear-4), all this 4 gear will be used for your normal driving, the car will automatically change the suitable gear-number for you depending on your speed then.

OD means over-drive, turn it on is to reduce the number gears the car can use, i.e. change from 4-gears to 3-gears (gear-1, gear-2 and gear-3 only), this is to give the car some extra power, i.e. going uphill like Genting, or because you need some extra boost to overtake car in front.

Your FC is high because you turn on the OD, limiting the gear to gear-3 only, but your normal driving I guess should be faster than 40-50km/h, maybe you will be driving at 60-70km/h, so the engine will be very stress, working on small gear but at high speed with high RPM, hence consume more petrol.

Note:
Proper way to over take a car in front: lets say you are driving on 2nd fast lane at 60km/h (gear-4), the car in front of you is driving also driving 60km/h, but then you decided to over take him, look at right side no car coming, turn on over-drive (car will change from gear-4 to gear-3), maneuver the steering wheel to the faster lane, press the accelerator, it will give the car a bit of extra boosts because of gear-3, RPM/torque will change to higher/extra push power, engine sounds will be louder, when your car is at same level with the car you want to overtake, turnoff the overdrive, so the car will change from gear-3 back back to gear-4 and not to stress the engine so much and also give you back your full speed.

Overdrive Layman Term : a short time turbo button for speeding, or long time extra power to climb uphill.

Hope this help.

What is the condition of traffic?, if traffic is bad then FC is bad too.

Is it you always wait in car and let the engine run? This will use petrol with no milage for you to track. This case mostly happen for sales person waiting for appointment and parent wait for their kid to finish school.

Tire need to always properly inflated

And also your driving habit

For the OD, you already doing it right. Just let it ON (light off)

This.

If u have been using O/D on (light off) and the fuel consumption that high, something is wrong.

Check ur tyre pressures as it may affect ur fuel consumption also.

As others said, play with the button, see which is the lower rev while maintaining at a constant speed maybe around 80kmh. The lower revving should b O/D on (light off).

U serviced ur car on time?
Check/change air filter
Pump the tyres harder abit 250kpa

If you always tekan at traffic light, try follow lorry driver smooth driving style.

This post has been edited by ceo684: Jan 11 2017, 12:55 PM

This.

If the setting is going haywire.... It migt be trouble for you....

Do you know the history of yr car before you buy it?

It drove by an aunty, usage to go pasar buy food. All service done by Toyota service center

you should, for normal drive >> O/D OFF; meaning O/D off indicator u visually see is LIGHTED

wrong. u should see your <O/D off indicator> LIGHTED for normal drive.

for normal drive > the O/D off indicator should be LIGHTED

WTH, who reported my post here? whats wrong with any of my 3 posts above?

Err.. no?? It should not be lighted (i.e O/D ON) for normal drive

I stand correct, for normal drive >> O/D off indicator is lighted means the car overdrive function is OFF.