Thread: How badly does bull bar etc affect fuel consumption?

Originally Posted by B92 8NW

Some of the responses are anachronic. The fuel consumption has increased AFTER the installation of a bullbar/winch/snorkel, the replacement tyres are the same size as the old ones (265/75) which were fitted for two years BEFORE any increase in fuel consumption was observed.

I reckon you should have a look at the electrical connections near the airbox, sounds like a plug has been knocked off a sensor if its winding out more in each gear than usual - the snorkel installers might have bumped something whilst doing the job.

What he said...bolded part . However........I am going to check today to see what pressure they are running at as that could be a factor as I hadnt considered extra weight at front as there has been a drop in suspension height.

Though I had the snorkel on first....before Xmas and fuel seemed the same.....only after Xmas when the bar and winch went on have I noticed the difference....i.e you kind of know what it should be showing at say half a tank and the kms' already done. It's due for a service soon....so will get things doubled checked as at the moment...I may as well have a V8 ,

Regards

Stevo

Originally Posted by stevo68

I may as well have a V8

No...you really don't!!
I fancy a TD5....wanna do a swap??

50kms isnt a major loss Steve

Your pump could be off/recalibrated.

Temp affects fuel too, expands when hot etc.

Air density and temp will come into play as well.

Yes the bar allows more air under the vehicle so changes aerodynamics a little.

When was it last serviced?

Originally Posted by AussieAub

I'm not posting my V8's consumption here because its too embarassing...!!

Can't be any worse than the 30L/100Km I'm getting from my 2-Door Rangie.............. can it?

Originally Posted by Tombie

50kms isnt a major loss Steve

Your pump could be off/recalibrated.

Temp affects fuel too, expands when hot etc.

Air density and temp will come into play as well.

Yes the bar allows more air under the vehicle so changes aerodynamics a little.

When was it last serviced?

50kms is a rough idea......probably more. Normally at say a quarter of a tank gone I will have done around 200kms.......not it is more like 150-160kms. As for servicing......would have been around 8000kms ago, so approx 3-4mths ago. Could suspension dropping slightly at front cause a false reading with the fuel guage thingamajig? Thanks so far for all advice/ thoughts......and no wouldnt really want the V8 , been there done that ( and miss it) with the D3.

Regards

Stevo

Originally Posted by stevo68

50kms is a rough idea......probably more. Normally at say a quarter of a tank gone I will have done around 200kms.......not it is more like 150-160kms.

... Could suspension dropping slightly at front cause a false reading with the fuel guage thingamajig?

That's not the most accurate way of measuring. If the height at the front has dropped it could indeed change your indicated fuel level.

You really need to record L/100 over several fills of the same driving (as you recorded before BB/winch fitment) to get a representative value.

Originally Posted by isuzurover

That's not the most accurate way of measuring. If the height at the front has dropped it could indeed change your indicated fuel level.

You really need to record L/100 over several fills of the same driving (as you recorded before BB/winch fitment) to get a representative value.

Thanks for that.....Bolded part.....now your sounding like my collective mates . Problem is I dont have the accurate data from before....more a gut feel and the data I have presented to date. In other words......2 yrs of filling it up and knowing how many k's I usually get, amount of times I fill up per month, what kms have been covered at 1/4,1/2 and 3/4 of a tank.

Since the bullbar and winch.......a noticeable change. If the consensus is that adding that wouldnt have a large impact.....then I need to look elsewhere. Am yet to get to servo....so will be interested to see what pressures are running in my tyres since I got the new ones fitted a few weeks ago,

regards

Stevo

New Tyres.


265/75/r16


I bet you the old ones were 235/70/R16 or 245/75R16

From my experience

That would equate to a 5kph difference = in a TD5 D2 to about 50km worth of range