volvo 850 lamda

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xf8u

The lambda sensor is on continuously on my 850 2.5 non turbo. Can i
simply take it out and clean it or will it need replacing.
Is it possible to test it as I have a multimeter.

Also, when I start the car the service light comes on for a couple of
minutes and then goes out. Is this normal?

Thanks in advance
 
The lambda sensor is on continuously on my 850 2.5 non turbo. Can i
simply take it out and clean it or will it need replacing.
Is it possible to test it as I have a multimeter.

Also, when I start the car the service light comes on for a couple of
minutes and then goes out. Is this normal?

Thanks in advance
Click to expand...

Both things are explained in the manual.

The lambdasensor light indicates a fault code is stored in the momory, it
can be many things, many of them not related to the lambda sensor.
The service light indicates its time to service the car. You can just ignore
it or reset it.

If you want help reading fault codes or to reset the light you need to write
exactly what car you have, model and year.

Niels
 
Thanks for the info, my car is 850 2.5 non turbo Reg N473 MDF I don't
know if it is 10 or 20 valve. Hope this helps
Mike
 
From what year is it?

Niels

xf8u said:
Thanks for the info, my car is 850 2.5 non turbo Reg N473 MDF I don't
know if it is 10 or 20 valve. Hope this helps
Mike
Click to expand...
 
xf8u said:
Thanks for the info, my car is 850 2.5 non turbo Reg N473 MDF I don't
know if it is 10 or 20 valve. Hope this helps
Mike
Click to expand...

If its the 10v it will say 'DOHC' on the plastic top cover, whereas if its
the 20valver, it will say '20 valve'.

Engine numbers on timing belt cover are B52502S and B52504S respectively.

The lambda light (MIL) lit is not necessarily a fault with the lambda
sensor- you'll need the computer codes read, cleared, car driven, and
recurring codes re-read to be sure as to whats causing the problem.

The service light being on means its time for a service! If the garage did
not re-set the light during the service, it will still be on, obviously. Its
normal for it to be lit for 2 mins then extinguish.

Tim..
 
Thanks for the info, I have checked the car and I can say it is a 10
valver 1995 2.5 non turbo.
thanks
 
xf8u said:
Thanks for the info, I have checked the car and I can say it is a 10
valver 1995 2.5 non turbo.
thanks
Click to expand...

I could have said;- if it pulls to 5000rpm then becomes uninterested its the
10, if it is uninterested til 4000 then pulls to 6000, its the 20v!

Tim..
 
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