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        General >> Problems >> 2.3 mpg
        
(Message started by: david49uk on Jun 7^th, 2008, 2:14am)

Title: 2.3 mpg
Post by david49uk on Jun 7^th, 2008, 2:14am

DOSE ANYBODY KNOW WHAT MPG MY 2.3 SHOULD BE DOING MINE IS DOING BETWEEN 15.5 17.5. DAVE

Title: Re: 2.3 mpg
Post by pinto on Jun 7^th, 2008, 2:41am

Thats low.

Mine returns about 26 mpg urban and 34+ mpg on a motorway run. It sounds like there may be a problem somewhere.

I'd start with a full service including the fuel filter - was amazed the difference it made to mine. Next along, check for leaks, clean the MAF, etc etc

Title: Re: 2.3 mpg
Post by Jonnycab on Jun 7^th, 2008, 3:11am

You should be getting a better mpg than that. Mine is anywhere between 23 around town to about 33 on a run.

A good service always helps, but a very low fuel consumption like yours is probably due to something else. Although spark plugs that have gone past their best can reduce fuel consumption & power considerably.

First thing I'd do, would be to disconnect the battery for about 30 mins to reset the engine management back to factory settings, then check for any fuel leaks or binding brakes, & check the condition of the spark plugs.

If this doesn't work, then you really need to get the car scanned, as you may have a problem with one or more of the engine sensors. Possibly lambda, MAF or ECT sensors etc :)

Other considerations may be faulty/leaking injectors or faulty fuel pressure regulator.

Also, do you use the air con much ?.....If so, then switch it off & see how much the mpg improves. Air con usually increases fuel consumption by about 2 mpg :)

Hope this helps :)

Title: Re: 2.3 mpg
Post by scorpio_man on Jun 7^th, 2008, 10:24am

hi there

i get 19mpg in town driving (ave 20mph) with a/c on all the time.

remember that you need the ave mph figure as well as the mpg as that gives you a better indication of how your car is running.

hth

Title: Re: 2.3 mpg
Post by david49uk on Jun 10^th, 2008, 2:24am

Disconected battery like told for half hour no differance .

Title: Re: 2.3 mpg
Post by Scorpio_Mike on Jun 10^th, 2008, 8:55am

I get around 23 - 24 mpg in normal mixed driving, upto 32 - 33 mpg on a long run - mine is an auto. A/C is on all the time.

Suggest you get an OBD scan done to see if anything shows up.

What area are you in ?

Title: Re: 2.3 mpg
Post by Highlander on Jun 10^th, 2008, 10:01am

Are you working out the mpg properly or are you going by the reading on the cars computer? (which may be needing reset)

Title: Re: 2.3 mpg
Post by Savvy on Jun 12^th, 2008, 11:18am

also check wheel alignment, mine was out a lot and after correction my mpg went up 10%!

Title: Re: 2.3 mpg
Post by david49uk on Jun 12^th, 2008, 5:34pm

scorpio mike im in lowestoft