please can anyone kind person help, my 1995 volvo 440 1.8I automatic that i have just aquired seams to be drinking the fuel like a binge drinker.

for every £5 of fuel im getting around 20 miles.

is this normal? ive checked fuel lines, air intake, tyre pressures, etc.
still no joy

please can anyone help with this fuel guzzler

thanks to everyone in advance

thewitchazel

Check your engine codes (or get them checked) all the times I have had those symptoms its been engine sensors.
a couple of times the oxygen (lambda) sensor, and once was a vaccuum hose to the air pressure sensor which had the pinhole blocked.
Grendel

thanks again grendel, its been baffling me ever since i got this cool 440
ill try not to drive around too much until i get this checked out

thank you

When I got my last (current) one it was just the same- crap mileage, new oxygen sensor, and it was running great, I now get between 33-39 mpg most of the time, round town is the worst, at about 30.
Grendel

thanks very much gendel your a gem, if i can get 29 around town ill be well happy.

ill get my garage to check it out, or i might just replace those two sensors with new ones to save on cost

cheers

I didnt have to replace the sensor on the air pressure one, just clear the blocked vacuum pipe.
Grendel

thank you ill go and look at it now

cheers grendel

hi gengel,
i took out the air pressure switch, poked around in the small hole then put back on car, started engine to my horror i now have the green emisions triangle illuminated on the dashboard.
have i done something wrong here as this triangle never lit before i poked the little hole in switch

please could you help

kind regards
and thank you in advance

sounds more likely to be the oxygen sensor then, basically the excessive fuel consumption says there is soimething wrong, the end of that vacuum line to look at is the injector end, thats where the restrictor is, and you will need something about the size of a pin to clear the hole, its small. it may just be that if you have cleared that, its got to the position it can sense the oxygen sensor not working. the diagnostic codes should pinpoint the problem.
Grendel

thanks grendel , what do you mean dianostic codes where do i get these from, do i need to take car to dealer to get these codes

grendel when i cleared the small hole in sensor could i not of damaged something

it went through its mot yesterday and the emissions were spot on, i just think ive done sonething to the sensor trying to clear tiny hole

cheers mate

did you run it whilst you had it disconnected, you should be able to find instructions ion this forum to clear the light. sometimes it needs a few miles to settle down.
what were the figures for the emissions part of the test, for mine the allowable is 3% yet mine usually goes through at about 0.3% or less.
Grendel

on the fast iddle check the lambda actual value was 1.024 which was a pass,
like i said this green triangle light only came on when i poked arounf the hole on the air pressure switch, any chance of pointing me in the right direction to clear this green warning light.

im realy sorry to keep asking these silly questions

just im worried this green light is doing something

thank you

the green light comes up when it senses a problem, and on my other violvo (which actually has this light) it goes out again, hmm 1.024 whilst a pass is still high I think
on mine the last test shows:-
co limits <=3.5% actual 0.078%
HC limits <= 1200ppm actual 40ppm

basically what this shows is my carbon monoxide is about 2/100 ths of the allowed, and the hydrocarbons (unburnt fuel is 40 parts per million)
I'm guessing that yours will be higher, but maybe still under the allowable, showing you are pushing fuel through unburnt.
One thought occurs, have you checked your air filter recently, if that is clogged with dust it can ruin the economy.
Grendel

what it says on my DGA 2500 MOT report is min limit is 0,970 and max limit is 1.030 and my value was at 1.924

i just cant believe my problem as no light showed until i tried to clear the small hole in air pressue sensor, what i plan to do is visit a breakers yard and get an other air pressure switch and lambda sensor,

in the mean time im searching this site on how to clear the green indicator

tried two air pressure sensores from the breakers yard, still the green light wont go out.

im at my wits end as like i said earlier i had no green light until i removed the vaccum hose to check the tiny hole on the sensor.

many people have told me to check codes, does anyone know how i check codes as im not sure.

i dont realy want to put in a expensive garage it will take me yonks to save up

please can anyone help with the green triangle light

just been out in my 440 tonight and it gets worse as well as this green light triangle now im gettin 18 miles per gallon
and engine has just started to idel eractic, all this because i tried to clean the small hole on the air pressure sensor.
is my car ready for the scrap heep

i live in hope of a fellow 440 1.8 injection automatic owener to save my car