Tips on improving fuel economy?

[Maxxiz]

Hey Guys,
Recently started driving my VS full time and only got about 370 to the tank, from what ive gathered this isnt too good. Anyone suggest any ways to get better economy?
Cheers

[strgas]

checked your O2 sensors lately ,exhaust manifolds cracked ? fuel pressure reg and line pressure , manifold leaking air at gaskets or injector seals ............

[rob_rob]

ride a bike?? lol
my manual vr v6 does ova 450k easily and ecotec are supposed to b better on fuel than the old buicks

check ur tire pressures
or maybe ur driving style??

[BT1-355]

Hey Guys,
Recently started driving my VS full time and only got about 370 to the tank, from what ive gathered this isnt too good. Anyone suggest any ways to get better economy?
Cheers

Your answer is LPG, dont forget that you still get the goverment rebate of $1750

[20Reino00]

Does anyone know if there is any reccuring problems on a commodore vs series 3. i just brought it and im wondering if i will come along any problems it is a 2000 model.

[nathanVY]

hey my VR is chewing fuel something shocking, ill get 300-350km out of a tank and thats mostly highway driving. what are the routine things I should check/replace to improve this?

[neet_wagon]

^^^ Mines in the same boat, lol.
Get around 350km's regardless of driving style, type of driving (city or highway)
I have replaced absolutely everything, and I flat out refuse to put LPG on a car,
If forklifts don't like it, why would a car?!

I've given up, I get the same economy out of it as a mates 200kw 'red' HSV does

[nathanVY]

its pretty annoying, but then again my girlfriends 4cyl nissan pulsar chews MORE than mine lol. her tank is like 7L smaller than mine and she gets max 300k, running it into the ground.

so I gather replacing the o2 sensors would be a good idea. that will be happening in a few weeks when I get my pacies installed (Scored a set including ypiece of ebay for $165)

but what about the seals on the injectors, fuel pressure regulators, etc are they likely to be a problem? am I better off just replacing them.

oh wait... my fuel pump gasket is leaking LOL. the leak isnt big enough to be a major loss of fuel but it could be loss of pressure. what do you think?

[sweefu]

Hey mate,
check the error codes, if they're all good might want to change plugs and leads. Get a decent panel filter and cold air induction, fit a more free flowing exhaust thent he car will breathe better in all ways.

Then, manual conversion so you can knock it into 5th all the time :P

I get a minimum of 450k's to a tank, usually giving it a fair bootful.

[nathanVY]

ill check the error codes, ive been meaning to do that for a while. recently changed plugs and leads, i have a k&n panel filter, and a 2.5"" reback exhaust. extractors to come.

so something is definitely wrong here. the other thing I might do is get some tb gaskets from holden, its currently sealed with gasket glue because i broke the gaskets when I cleaned the tb lol.

[nathanVY]

error codes 31 and 12. :S

[Leathal11]

Does anyone know if there is any reccuring problems on a commodore vs series 3. i just brought it and im wondering if i will come along any problems it is a 2000 model.

i have been getting 300km to a tank lol (5speed V6) but lately i have just been putting it in 5th once at cruising speed and i am able to get around 400-430 lol

[nathanVY]

sweefu how do you get 450 out of a tank lol

[hako]

I figure anything over 300 is good.....but really, it all depends on your driving style. No two drivers are the same!
So, for the OP, 370km is good.

[edals]

I have no idea how its possible but our VR gets 700KMs to tank. was only getting about 400. But gave it a service and much better. Was only getting about 600, but i put in GM plugs and gained another 100kms to a tank. And change the Fuel filter. This will help alot.

[delcowizzid]

driving in 5th gear when doing under 100kmh will really suck gas to high a gear and labouring will suck gas like its going out of fashion same with auto when in town cruising round at 50 lock it in 3rd not D you will save heaps i stay locked in 3rd until i get to 100kmh.i can get well over 600km a tank and im turboed LOL

[nathanVY]

thats bizzare lol, whats GM plugs?

[edals]

The Plugs are From Holden Mate, CHeap only $4 each. From Memory they are denso made in Japan.

[nathanVY]

eh oh well. im running ngk plugs atm they seem to be working fine.

[somefool]

checked your O2 sensors lately ,exhaust manifolds cracked ? fuel pressure reg and line pressure , manifold leaking air at gaskets or injector seals ............

... cracked exhaust manifolds? ive got a hairline crack running about 50% thru it (the passenger side header) and get less-than-good economy.. How does it affect economy??

[VzVzVz]

Just cruize up to speed and try to get in as higher gear as possible without labouring the engine. I found a dramatic decrease in my fuel consumption.

[Phoenixx]

My VR Stato 5 Litre is on dual fuel but when on petrol I get minimum 450 to 500 K's around town and minimum 750 K's on a trip cruising on the highway. It has an 80 Litre tank of course which helps and also everyones driving style is different as another poster altready stated. It's just a stock 5 Litre 4 spd auto and I'm an old fart never in too much of a hurry to get anywhere, lol.

[woteva]

With a broken return line, I was getting around 440kms before it was running like a pig and had to fill up. Have fixed the return line to the swirl pot now and already at 450kms and running fine

[sweefu]

sweefu how do you get 450 out of a tank lol

Haha! I keep it well serviced, i do everything except plugs every 5000k's .. never put ethanol in, have a cat back exhaust, cai and k&n filter, and cruise is lower gears where possible. Works for me!

[nathanVY]

Haha! I keep it well serviced, i do everything except plugs every 5000k's .. never put ethanol in, have a cat back exhaust, cai and k&n filter, and cruise is lower gears where possible. Works for me!

yeah I'm still in the process of getting it to a state i'm happy with as the last owner didn't know anything and thus didn't take care of it properly. I have all the same setup as you! is your car auto or manual?

With a broken return line, I was getting around 440kms before it was running like a pig and had to fill up. Have fixed the return line to the swirl pot now and already at 450kms and running fine

Whats that? can someone tell me where to look to check all the fuel system components?