lambda sensors

[robjackson]

Which do i need for my 1.2s? do i need a pre cat and post cat one? I will be buying from: http://www.cats-direct-shop.co.uk/lambda-sensors.php

 

[goble]

whats the fault code???

 

[robjackson]

not checked it yet, ordering them premptively, i am 99% certain that it/they are the problem

 

[goble]

is it the 1.2 3 cylinder azq engine??? whats it doing exactly??

 

[robjackson]

yes it is,
When accelerating in any gear, intermittently the power dips like the rev limiter is kicking in. If i lift my foot off and accelerate again it is fine. I have just had the timing chain sorted so not that, one coil pack has been replaced so far (unrelated). I have just done a 40 mile round trip. When accelerating in most gears now it is feeling like it is going to stall. It is using fuel pretty heavily. When i floor it in all gears it is going well. It is the mid-ranges where i am having problems. The engine management light is still off. I am baffled. WTF can i do? What can it be?
The same happened on my Pug 306 before i sold it, eventually it just started cutting out, i can't get it to a garage til the weekend either - pulling my hair out!

 

[goble]

what year is it??

 

[robjackson]

mk iv 2002, 51k

 

[goble]

ah thre is an ecu flash update for this but could be sticky egr valve or fuel filter has broken up and clogging the injectors, had all 3 of the above before on seperate cars but flash update and egr are most common

 

[robjackson]

i am a tech numpty, in simple terms what do i do?

 

[goble]

hmm unfortunately its going to be best to take it to a dealer who has the software for this or info

 

[robjackson]

what is the worst case scenario cost wise?

 

[robjackson]

How will the flash update sort it? I understand that? Also the egr fault appeared intermittently on VAG com but went away

 

[goble]

ah then its sticking try a new one cleaning them rever works as they seem to go weak

 

[robjackson]

How sure are you of this? if i stick in shed loads of engine cleaner would it help short term?

 

[goble]

no the egr valve sits on the rh side of the engine at the top looking in the engine bay. and is really a sealed unit.. sure of it because ive changed so many on the azq because of this problem

 

[robjackson]

How much should i expect to pay for it do you think?

 

[robjackson]

and how hard is it to replace?

 

[robjackson]

Spoke to seat today, the ERG valve is £110 FFS! Where can i get one cheaper?