how many lambda sensors does a furio have?

22nd September 2011, 12:32

changed my exhaust from a mk2 to a mk1 the other day as i have a mk1 engine and the mk2 cat made contact with the oil filter. unfortunately the old setup had a lamda sensor in the down pipe and one in the top of the manifold, the new mk1 manifold does not have a hole for a lambda sensor and so the car has just one in the down pipe and the other is cable tied to something in the engine bay, is this gonna be a fixable problem? will it pass its mot etc, or can you get mk1 manifolds with lambda ports? thanks guys

22nd September 2011, 12:34

yes it will pass the MOT aslong as the green plugged sensor is the one plugged in and its plugged in before the CAT not after it.

if the sensor is after the cat it will not run properly and will fail emissions.

if there is no cat at all it will fail emissions.

22nd September 2011, 12:40

can i just unplug the other one then, without it messing up engine problem lights etc?

22nd September 2011, 12:45

aslong as the green one is plugged in before the cat everything should be fine,

however, unplugging the second one (blue plug) may cause the engine management light to come on but if it does it wont do any harm.

just try it, un plug it and see if it comes on

22nd September 2011, 12:56

engine lights already on mate, haha, some problem that was to do with the old exhaust system i believe. also do you know if there are different types of down pipe for different engine sizes as my new down pipe blows and i assume its because its a 1.1 down pipe on my 1.4 ???

22nd September 2011, 12:59

also the current dwn pipe will not reach the bracket so it is only jpoined to the manifold, not the underneath of the car like it should. the reason i ask all this is because i believe i have a mk2 car with a mk1 engine, so i wonder if a change of down pipe will work or not beacuse the car itself is set up for the mk2 system?

22nd September 2011, 13:04

does your engine have the oil filter to the top left front of the block or is it situated to the bottom left front of the block?

if is the top right its a mk2 set up so you need the manifold that the cat bolts up underneath, the cat has a pipe built into that goes down under the car and conects to the centre section then onto the back box. this system has a green plugged lambda in the manifold and a blue plugged lambda after the cat in the pipe that goes down under the engine.

if its the bottom left its a mk1 set up so you need to get a manifold with just a straight down pipe going under the car to the catylytic convertor, then centre pipe, then back box. this system should have one lambda sensor only and i think its fitted in the down pipe?

hope this helps.

22nd September 2011, 13:14

Sorry to hijack but does anyone know how many lambda sensors a Mk1 vts has? As I'm looking to fit a full supersprint decat pipe and mani soon.

Dale

22nd September 2011, 13:17

just one on the vts i think mate.

why not just have a look at your car? haha.

22nd September 2011, 13:23

Quote:

Originally Posted by rick_VTR

why not just have a look at your car? haha.

I make myself sound like I know what I'm doing when I say I changed my own clutch but what actually happened is I watched a friend do most of the work and then bought him a drink after. I'm still learning and know nothing of exhaust systems really lol

Edit: just realised the clutch thing was a different thread, being pretty slack today haha.

Anyway sorry for the hijack sick6sicks!

22nd September 2011, 13:28

haha i used to be like that with my dad doing all the work.

i enjoy doing most the work myself now, i dotn let him loose on most things, he has a habbit of braking everything :/

22nd September 2011, 20:55

if its the bottom left its a mk1 set up so you need to get a manifold with just a straight down pipe going under the car to the catylytic convertor, then centre pipe, then back box. this system should have one lambda sensor only and i think its fitted in the down pipe?

That`s right mate same set-up on my mk1 saxo(vtr single plug ecu)

23rd September 2011, 17:01

yeah, i think the problem is i have a mk1 engine in a mk2 car, it defo needs a down pipe with the cat under the car, but it has 2 lambda sensors. so i can just unplug the blue one and stick the green one in the down pipe? also does anyone know of any other known problems that will arise from having a mk1 engine in a mk2 furio? thanks for all the help guys.

23rd September 2011, 17:14

also just read up on what a lambda sensor actually does, (basicly tweeks the air:fuel mixture to meet emission standards from what i can gather) and will removing the blue lambda sensor not mess with my mixture?