200 kms out of a full tank of premium fuel

[SUSVS]

Hey guys I sent my car to a local wrecker about 2 weeks ago and it came back and the guy said it needs new oxygen sensors, I replaced the fuel pump, the fuel filter and both oxy sensors, it's got me stumped as to why it's chewing fuel, it's only a standard vx ss with a dual 2.5 xforce cat back exhaust system,
Does anyone have any suggestions ??

 

[LittleMissVE]

There is a thread in the VE section similar to this... Have a look through & see if anything on that one helps.

 

[vnkid]

Could really be anything from flat tyres to faulty thermostat.
Check all the fuel related causes. Plugs, leads, injectors. Temperature related, cooling system, thermostat.
Blocked cat?
Reset Ecu and check codes?
Inflate tyres to recommended levels and stop driving like a hoon?

 

[Not_An_Abba_Fan]

Run a tank of standard fuel and see what happens. If the car is not tuned to premium, it won't run as economically. But having said that, 200kms is pretty bad, were you giving it a lot of stick?

 

[SUSVS]

Na it's driving it like grand pa would but I'll try normal fuel but not e10

 

[Not_An_Abba_Fan]

The LS1 has a bad habit of chewing up RH factory cats. If one or both cats have broken up and partially blocked the exhaust, it would cause really bad economy.

 

[SUSVS]

How can you check??

 

[Hektic]

Remove the exhaust from the cat Back and have a peak throgh with a torch if its blocked youd see loose honey comb look

 

[pommyVL]

Im a pretty normal driver and with a full tank of premium i get about 320km around newcastle.

If i razz it i get about 260 and if im a granny i get about 400km max

my car is overdue for a full service and filter change too because my gearbox is ###d..

 

[Full Spectrum]

Fuel regulator shitty injectors ?.