Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: JamesV6CDX on 26 February 2007, 20:35:14
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My 2.0 16v, I have calculated is averaging 21MPG with combined town / a road driving. I know they're not the most economical, but this seems excessive.
I've cleaned out throttle body, all breathers are cleaned out, new plugs, fuel, air and oil filters done.
Any ideas welcome...
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Only two things I can think of but you would get an error are
The air intake temp sensor and the lambda
Craig
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Foot, lead, springs to mind. ;D
My 2.2 averages 25 around town, fitted with auto box.
Long journey, Scotland to Devon, averages 36 -38.
I have tried slip streaming old ladies on zimmer frames and the variety of British Racing Green Tractors that we have in my neck of the woods.
Could just need a good old fashioned service. :)
8-)
DaveL
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Or you could have your empties in the boot from Saturday night ;) ;D
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21mpg :o
Something not right there for an average!! Driving to Nottingham in the Senny at very high speed, including several runs to high 3 figures, on the private runway... it averaged 26mpg...
My 2.2 did 35mpg average on the way back to Uni on Sunday (cruise set @ 80)
Getting any error codes?
Tyre pressure?
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Any brake bind?
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No just a snapping sat nav called the other half. ;D ;D
8-)
DaveL
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Ok, no fauld codes, I've already checked all of this :(
Jacked up each corner, no brake bind obvious
Engine's had a damn good service..
And what do you take me for Tunnie? ;) I check my tyre pressures weekly ;D
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And what do you take me for Tunnie? ;) I check my tyre pressures weekly ;D
Just checking, I should do the 2.2 soon ::)
Problem like on the old car, leaking tank? Fuel leak maybe?
Having said that we had it running in my garage for ages, no obvious smell of petrol :-/
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Mine used to get 22 commuting with a heavy right foot.
Over 30 on a moderate run, high 20s at 80mph, and running on Shell it used to get 20mpg towing on the Somerset levels! (but 16 in Devon Cornwall)
On the 2.6 gauge says 14.xmpg filling up says over 16mpg. More economical towing on motorway than commuting!!!! So check at the pump not the MID
I need to richen it a bit I think to get the emmisions light out.
And
I must stop thrashing
I must stop thrashing
I must stop thrashing
I must stop thrashing
I must stop thrashing
I must stop thrashing
Oh stuff it they sound nice over 5000rpm
Anyway so your tyres pressures are OK, brakes OK, serviced, leads OK? driving OVER 50mph?
For economy keep it at mid to high 50s avoid acceleration and braking, and polish it!
Try Shell petrol as well, also run some injector cleaner through
You could do the axle and gearbox oils?
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Carnt remember if its auto or manual...... :-[
Manual then id say its definately thirsty.....
My 2.2 averages 20ish on lpg......and i boot mine most of the time.....i have too....its a bit lacking on power.
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His is an auto
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My checks are based on calculations at the pump, rather than the MID.
Can't always keep over 50 in the town ;D but otherwise yes!
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If no DTC's then it may be coolant sensor problem, staying in warm-up enrichment. Dunno about 4cyls, but different sensors for ECU and dash on V6.
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His is an auto
Ah rite....cheers :y
I would agree with davel then......25mpg av is probably about rite for an auto
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Start with the basics.
1) The engine is getting upto temp?
2) The airfilter is clean
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My Missus has got my Omega's average down to 23 mpg commuting for an average of 30 minutes over 6 miles each way to work!
(2.5 manual)
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Seems very excessive for a 2.0 James. I normally get between 25-27 mpg urban/town and 31-32 mpg on motorway/long run from my 2.5 V6 estate, although it is manual.
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Start with the basics.
1) The engine is getting upto temp?
2) The airfilter is clean
Airfilter was renewed when I got the car a couple of weeks ago
As far as getting up to temp goes, it's hard to tell, because the temp gauge only works when it feels like it ;D
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I wonder if the wrong washers have been used on coolant bridge, causing bad earth.... ....iirc, the ecu is too old so cannot tech2 it...
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I wonder if the wrong washers have been used on coolant bridge, causing bad earth.... ....iirc, the ecu is too old so cannot tech2 it...
You are right about the ECU
Interestingly, I filled it to the top again last night, still on Tesco99. I since did a run home, about 7 miles in heavy stop/start traffic, and 65 miles on the Motorway between 70-80mph..
When I got back to Gloucs I filled up with Tesco99 again, and it cost me exactly £7.70 to do 72.2 miles, which is 37.7mpg.. (MID said 38.5).. these are closer to the figures I would expect....
Weird!!!
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To expand on TB's comments, check your ground connections? Block, engine loom, etc.
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When I got back to Gloucs I filled up with Tesco99 again, and it cost me exactly £7.70 to do 72.2 miles, which is 37.7mpg.. (MID said 38.5).. these are closer to the figures I would expect....
Weird!!!
I wonder if you got a dose of the contaminated fuel as well? Didn't make such a dramatic difference to fuel consumption on my car but on a different engine management system it might have. In fact, as yours didn't throw up a fault light maybe it indicates that the limits are wider and it carried on winding the correction up rather than going back to base values and barfing a fault code?
Guess we'll never know.
Kevin
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When I got back to Gloucs I filled up with Tesco99 again, and it cost me exactly £7.70 to do 72.2 miles, which is 37.7mpg.. (MID said 38.5).. these are closer to the figures I would expect....
Weird!!!
I wonder if you got a dose of the contaminated fuel as well? Didn't make such a dramatic difference to fuel consumption on my car but on a different engine management system it might have. In fact, as yours didn't throw up a fault light maybe it indicates that the limits are wider and it carried on winding the correction up rather than going back to base values and barfing a fault code?
Guess we'll never know.
Kevin
Who knows... I'm going to run this tank to the bottom.. and it's going to be OPTIMAX from then on!
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That is.. until I'm running on LPG ;D
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my 3.0 elite gets 17 to 18 locally..lots of hills, short journeys....on a run, it can really rise....it loves motorway journeys, with cruise control, and gets to around 29 mpg
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my 3.0 elite gets 17 to 18 locally..lots of hills, short journeys....on a run, it can really rise....it loves motorway journeys, with cruise control, and gets to around 29 mpg
On a steady motorway run, I'd want more than 29........
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my 3.0 elite gets 17 to 18 locally..lots of hills, short journeys....on a run, it can really rise....it loves motorway journeys, with cruise control, and gets to around 29 mpg
On a steady motorway run, I'd want more than 29........
My 3.0l on a steady motorway run is low 30s. Apparently, on run, Inst Cons should be reading low 40s at 70mph on 2.0l
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my 3.0 elite gets 17 to 18 locally..lots of hills, short journeys....on a run, it can really rise....it loves motorway journeys, with cruise control, and gets to around 29 mpg
On a steady motorway run, I'd want more than 29........
My 3.0l on a steady motorway run is low 30s. Apparently, on run, Inst Cons should be reading low 40s at 70mph on 2.0l
Apart from not going that slow I rarely got over 40 instant on mine except on overrun.
The 2.0s aren't THAT economical. BEtter than V6s but not hugely better
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my 2.0 Gets 36mpg on a run, and about 22mpg knocking around.. big difference...
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For the record I generally get over 500 miles on my 2.0 before the light comes on - mixed driving.
Think that's c. 35mpg
My 2.5 long term average (because I haven't reset the computer) is 30.0 exactly.
Cheers
Ian
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i seem to be getting around 32 on my daily commute now, it was doing around 27/28 until i noticed the tracking was out ( the steering was VERY light - like torque steer on a front wheel drive car)
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i seem to be getting around 32 on my daily commute now, it was doing around 27/28 until i noticed the tracking was out ( the steering was VERY light - like torque steer on a front wheel drive car)
Is yours a Manual? You might want to speak to Omegatoy about getting it chipped :y
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i seem to be getting around 32 on my daily commute now, it was doing around 27/28 until i noticed the tracking was out ( the steering was VERY light - like torque steer on a front wheel drive car)
Is yours a Manual? You might want to speak to Omegatoy about getting it chipped :y
its an auto. just got over a overheating problem - valve stuck open on the cap , so the system wasn't pressurising, so the mileage average could be higher (can hope cant i ?)
was thinking about a chip, but the cost is putting me off at the moment, have noticed superchips wanting £511 fitted! this is money i would rather ( no offence ment) be spending on the other car.
but then again ......... ::)