POST lambda sensor on a MK2 VTR - Saxperience

Cammy · 3rd January 2011, 07:18

Does anyone have the part number or a referance page that i can get the part number for the POST lambda sensor on a MK2 VTR (3 plug with cat in the manifold)

EDIT: Actually, does anyone know if the MK2 is a blue plugged lambda sensor?

Simon^p · 3rd January 2011, 18:44

On my 03 vtr (3 plug)

First lamda is green plug
Second lambda is blue plug (citroen part no 1628KY)

Cammy · 3rd January 2011, 19:59

Edit;

Actually, the first lambda connected on my engine is the blue lambda plug... this car is decatted through a 4-2-1 manifold, so could it be in the wrong position??

Cammy · 3rd January 2011, 20:03

Getting pictures of it, as it seems to be in the wrong order.

Liam_ · 3rd January 2011, 20:07

98bhp 3 plug engine should have green sensor before the CAT, blue sensor after. If you remove the CAT, green sensor stays in the manifold/ exhaust and blue sensor gets sleeved.

Don't bother buying one from Citroen - Eurocarparts do the sensors for around £60.

Cammy · 3rd January 2011, 20:11

The only lambda sensor connected is this one, blue plugged, but its in the first point of the exhaust, has it been put in the wrong place by the mechanic?

Which leads here... to the first hole for a lambda sensor.

This is the only green plug available, is this correct for the green lambda?

Cammy · 3rd January 2011, 20:12

Looking at the green and blue plug, they look identacle, so ignor that question if that green plug is for the lambda.

Leeumh, is putting the blue one there mean its pretty much going to be fucked?

Cammy · 3rd January 2011, 20:39

Just ordered the green one, hopefully its the right one for this model, but does anyone know if the blue lambda will be fucked for being in the manifold by itself?

Liam_ · 3rd January 2011, 22:06

Blue lambda needs removed from the manifold and screwed into a metal sleeve. Or, if you're not bothered about the engine management light, you can just junk the blue lambda.

Green lambda needs to go into the manifold where the blue one is currently. That green plug is the right one for the green lambda.

The blue lambda sensor shouldn't have been damaged - only one way to find out.

Dave_P · 3rd January 2011, 22:37

Someone screwed up there.

Cammy · 3rd January 2011, 23:14

Right, ive ordered a green one from a citroen breaker for 22.50

The reason why im concerned about this is just for the fact im swapping the manifold over for a manifold with a cat in it, so need both lambda's

Fingers crossed this one is fine.

Sophia_Bush · 3rd January 2011, 23:26

you missing one? should of said got a spare here I am pretty sure is good

Cammy · 3rd January 2011, 23:29

Hmm, how much gav?

Sophia_Bush · 3rd January 2011, 23:54

if i wake up ill lob it in with mani if not ill send it normal post special so 10 quid?

TheBobcat · 6th January 2013, 17:13

Where about in the engine bay is that green plug mate? Cant find mine anywhere and car is running shocking as someone has plugged blue one in mani and no sign of green one anywhere.

Cheers in advance for an replys