Please tell me this is wrong and there's a fix

[c70geoff]

Lol thermostat and housing changed a few months ago

[jamesy12345]

Lol thermostat and housing changed a few months ago

As said above could be the 02 sensor. My Volvo 460 auto had a cheapo one and was doing well under 20 mpg

[partsforvolvos.com]

Try a piece of cardboard down the front of the radiator, cheaper than a thermostat

somebody has been watching ice road truckers ....... lol

[960kg]

My 960 only returned 10mpg when an O2 sensor went wrong and i had the error code up also with black smoke out the back!

Owners do not realise that just because an error code does not come up that all is well.......O2 sensors do wear and become not very good at there job resulting in poor mpg......the manufacturers of them state a mileage of between 60 to 100,00...........my 960 went kaput at 103,000.

Get the codes read first!

[T5frankie]

You can easily get 12mpg if you're just pottering around town or your local neighbourhood especially in an auto

[jamesy12345]

You can easily get 12mpg if you're just pottering around town or your local neighbourhood especially in an auto

Maybe in an X5!

[JamesT5]

My 960 only returned 10mpg when an O2 sensor went wrong and i had the error code up also with black smoke out the back!

Owners do not realise that just because an error code does not come up that all is well.......O2 sensors do wear and become not very good at there job resulting in poor mpg......the manufacturers of them state a mileage of between 60 to 100,00...........my 960 went kaput at 103,000.

Get the codes read first!

Might be worth changing mine because my fuel economy is slowly getting worse. Thing is there are two lambda sensors on the P2 and they're around £100+ each!

[jamesy12345]

Might be worth changing mine because my fuel economy is slowly getting worse. Thing is there are two lambda sensors on the P2 and they're around £100+ each!

If they bring the fuel economy up by 5 mpg they would pay for themselves in 4000 miles smart arse answer I know sorry but just saying worth doing

[RollingThunder]

Might be worth changing mine because my fuel economy is slowly getting worse. Thing is there are two lambda sensors on the P2 and they're around £100+ each!

IIRC the front one is the one that matters - the second one only checks that the cat is working? I may be wrong but thats my recollection, so if correct you should only need to change the front one.

[jamesy12345]

IIRC the front one is the one that matters - the second one only checks that the cat is working? I may be wrong but thats my recollection, so if correct you should only need to change the front one.

I think you need both tbh, but yes the front one does most of the work

http://www.volvoforums.org.uk/showthread.php?t=8600

[T5frankie]

Maybe in an X5!

That x5 was really economical mate up to 48mpg

[jamesy12345]

That x5 was really economical mate up to 48mpg

I had a Range Rover with the 2.7 TD engine - it was crap struggled to crack 25 mpg

Attachment 24391

[stribo]

I think you need both tbh, but yes the front one does most of the work

http://www.volvoforums.org.uk/showthread.php?t=8600

As RT said, only the front one will affect the fuel consumption.

[jamesy12345]

As RT said, only the front one will affect the fuel consumption.

I was just trying to say I wouldn't leave a defective rear one in

[c70geoff]

O2 sensor =
Ouch much £243 local stealer

[M-R-P]

O2 sensor =
Ouch much £243 local stealer

Have a word with Jamie at PFV, I think the one he sold Graham was less than 90 quid.

[siamblue]

Have you got a part number yet?

[c70geoff]

Not yet dude haven't been near it today been working on my business planning

[pillapow]

i would change the thermostat and sensor in the housing.
if the gauge is low, that sensor does the guage and ecu so it could effect fuelling.

It will 99% be this, the car isnt getting upto temp so is running cold and rich hence your poor MPG.

Stat and sensor should cure it.

[pillapow]

Lol thermostat and housing changed a few months ago

One of them is faulty, test the resistance!!