D2 Fuel Consumption

[mrapocalypse]

My V8 seems to get better economy on LPG than on petrol.

Which it shouldn't AFAIK.

In fact it gets about 16-18l/100Km on gas and about 22L/100Km on ULP.

Would this be a sign that a particular sensor is playing up.

Could it also be a sign that there is something amiss with the gas system that is taking the fuel system computer time to readjust to?

Any thoughts would be much appreciated.

It's in good nick and has new MAF but original O2 sensors.

Thanks in advance.

Ian.

[PhilipA]

How many Ks?
Any error codes?
You could have dead o2 sensors or drooling injectors, or dead engine temp sensor.
Best to run a check with a diagnostic tool a the first action as Motronic should not be so bad on fuel and they have a good fault reporting system.
Regards Philip A.

[mrapocalypse]

Hi,

Thought so. I'll get them to replace the o2 sensors on the next service anyway and make them aware of the consumption fact.

No faults have showed up that weren't fixable in the last while and its had a lot of work done on it.

Cheers

Ian.

[ballbag]

Mine runs the exact opposite - 22L/100km on gas, 16L/100km on petrol. I've kept thorough logs and these figures haven't budged.

Is this a recent phenomenon for your vehicle?

I can't see how any sensor would result in a 50% increase in fuel consumption. Is the ECU capable of prescribing such a rich mixture?

Bung injector or a leak elsewhere is my guess.

A faulty coolant temp sensor would likely show up as a hunting idle.

[mrapocalypse]

Hi,

No not recent, but because we have a 160l fuel tank, it tends to be a difficult process to get an accurate idea of fuel when we predominantly use LPG.

And it's hard to do a certain distance then fill to the brim. But that's what I'm going to do soon.

It is using way too much ULP. Runs beautifully though. Smooth as a baby's ??..

[Modelsp]

Hi,

Thought so. I'll get them to replace the o2 sensors on the next service anyway and make them aware of the consumption fact.

No faults have showed up that weren't fixable in the last while and its had a lot of work done on it.

Cheers

Ian.


Get a quote on the O2 sensors beforehand
unless you have a bottomless bag of money
I got mine from British Parts of Utah in the US
2 for the price of one over here and genuine Bosch.
just my 2bobs worth.
cheers
Paul

[mrapocalypse]

Yeah, I heard the same. Ford falcon ones that you need to solder the ends on etc..

Also there's meant to be some higher performance ones as well.

[ballbag]

Try Amazon:
Amazon.com: Bosch 15175 Oxygen Sensor, OE Type Fitment: Automotive@@AMEPARAM@@http://ecx.images-amazon.com/images/I/41cHySp2PSL.@@AMEPARAM@@41cHySp2PSL

[Pedro_The_Swift]

"160L fuel tank"

thats LPG, right?

wow! I'm suitably impressed!:o:cool:

what tank did you stuff in the rear?:confused:

[Fluids]

"160L fuel tank"

thats LPG, right?

wow! I'm suitably impressed!:o:cool:




Why ? On 160L of LPG it still wouldn't go as far as a rattler on a std sized tank of dieso !! :twisted:

;)

[ozscott]

I would get nearly 900k from 160 of lpg. Would be nice.

[Pedro_The_Swift]

Why ? On 160L of LPG it still wouldn't go as far as a rattler on a std sized tank of dieso !! :twisted:

;)

ah yes,, but we wont be deaf or shaken to death when we arrive----;):cool::p

[Fluids]

ah yes,, but we wont be deaf or shaken to death when we arrive----;):cool::p


PARDON ? .... What ?

:cool:

[mrapocalypse]

PARDON ? .... What ?

:cool:

He said

Anyway. No. 60l LPG 165l Ulp

Up to and sometimes over 300k on the LPG tank.

Filling petrol right up is over $300

[Pedro_The_Swift]

60l LPG
165l Ulp


er,
havent you got that backwards?:eek:

[ozscott]

He must have a long range tank. ...

[mrapocalypse]

He must have a long range tank. ...

ARB Long Ranger.