Urgent help needed with emissions results

27th October 2012, 13:37

ok first off i will give a little history of what i have done since having the emissions tested again and to which it failed.

The first test the readings where as per the picture below, as i was unsure if it was related to the Cat or Lambda i have done the following

1) Replaced cat with second hand unit that looks pretty much brand new (Garage commented on this aswell)

2) Replaced Lambda sensor now here i had a problem sourcing a second hand one with the correct plug so i opted to be a bit of cheapskate and use a universal one which i had to wire but here there may be a problem the wires are black, grey & two white now i could not determine if it mattered which way around the white wires go so just connected them.

3) Done full service on car bar spark plugs as some idiot has done them up so tight i could not undo with a spark plug spanner so will try this again once i have a decent deep socket.

o.k with that all done today it goes in for the MOT and fails with the following reasons (as per picture below) which looking through all the previous emission tests this is by far the worst to date.

As the garage i have taken to will do a free retest within 10 working days im hoping to get some help as to where the problem may lie Cat , lambda or both ?

Any advise comments would be greatly appreciated

27th October 2012, 13:58

I'd say looking at them results is that your cat if fcuked

27th October 2012, 13:59

Also that universal Chinese lambda can't be helping, u could have spent about 35quid more and got a proper 1 from carparts4less

27th October 2012, 14:06

Why didn`t you just get a bosch lambda sensor in the 1st place,plug & play?

27th October 2012, 14:13

Put your standard backbox on and try again? (worked with my old 1.1 saxo btw)

27th October 2012, 14:24

Quote:

Originally Posted by shaneio

I'd say looking at them results is that your cat if fcuked

Hoping its not that as was a pain to get off and on lol.

27th October 2012, 14:25

Quote:

Originally Posted by shaneio

Also that universal Chinese lambda can't be helping, u could have spent about 35quid more and got a proper 1 from carparts4less

As i said i could not seem to find one with the correct plug but yeah i know universal is not ideal but i thought it would hell now i jusy dont know

27th October 2012, 14:29

Quote:

Originally Posted by stevo67

Why didn`t you just get a bosch lambda sensor in the 1st place,plug & play?

The only one i could find was £80 plus and it did not have the correct plug and as the sensor in the car when i got it was not the original i have no idea what the part number is ?

27th October 2012, 14:31

Quote:

Originally Posted by Prickle

Put your standard backbox on and try again? (worked with my old 1.1 saxo btw)

exhaust is fully standard

27th October 2012, 14:34

This is the Bosch one on carparts4less or euro car parts, but im not sure about risking £86 and then having to buy another cat which god knows how much that will be ?

http://www.eurocarparts.com/ecp/c/Ci...e2d4897&000210

27th October 2012, 14:51

pics of lambda sensor connector if it helps ?

27th October 2012, 14:53

FFS. When will people learn to pick up the phone and to ring parts place's and not just look on the net.

Your cat is fucked looking at the result's you posted. Just because the cat looks new doesn't mean the internals are good. Universal lambda's are wank as stated and also every join in a lambda creates a resistance so fucks the reading up for the ecu.

Go buy yourself a 1 year cat. they are around £30 wont last long but will get you passed through the mot. and also buy yourself a good tested second hand lambda or a proper new bosch one.

27th October 2012, 15:06

Quote:

Originally Posted by Bedford126

FFS. When will people learn to pick up the phone and to ring parts place's and not just look on the net.

Your cat is fucked looking at the result's you posted. Just because the cat looks new doesn't mean the internals are good. Universal lambda's are wank as stated and also every join in a lambda creates a resistance so fucks the reading up for the ecu.

Go buy yourself a 1 year cat. they are around £30 wont last long but will get you passed through the mot. and also buy yourself a good tested second hand lambda or a proper new bosch one.

Fair enough buddy i take your comments on board but i don't have time to be sitting on the phone all day to be honest.

Where do i find a cat as you say for £30 the one i got cost me £30 from some guy on here so looks like i got turned over on that one hmmm cheapest one i can find new which no doubt will be shit is £48.30 inc. VAT

I am already in the process of trying to source a Bosch second hand one or will look to get a new one.

27th October 2012, 15:09

I spent hours searching to find which wires went where haha.

I'll upload some pic's so at least you know the sensor is wired in correctly.

BTW - I had trouble sourcing a mk2 sensor.. So i got a mk1 one.. and made the connector fit.

5 mins.

27th October 2012, 15:13

Quote:

Originally Posted by GeeDawg

Fair enough buddy i take your comments on board but i don't have time to be sitting on the phone all day to be honest.

Where do i find a cat as you say for £30 the one i got cost me £30 from some guy on here so looks like i got turned over on that one hmmm cheapest one i can find new which no doubt will be shit is £48.30 inc. VAT

I am already in the process of trying to source a Bosch second hand one or will look to get a new one.

You don't have time to pick up the phone but you have time to be on here and search the net for the correct one?

1 year cats from Andrew page are £30.

27th October 2012, 15:15

Green to black

Red to grey

others are heaters

And you can see i broke the connector off = allowing to fit the mk1 sensor

27th October 2012, 15:19

Quote:

Originally Posted by saxova

And you can see i broke the connector off = allowing to fit the mk1 sensor

If failing to buy the correct sensor for the year of your car/engine. Just break the connector so a older one fits.

genius.

suppose if it works then its all daisy, however i wouldnt be breaking any connectors to do it like..

27th October 2012, 15:20

I honestly give in with the intelligence of people on here.

27th October 2012, 15:23

They are 58 on carparts4less for a ngk1 I got 1 a few months back

27th October 2012, 15:23

No eml on / perfect running, problem?

27th October 2012, 15:54

Quote:

Originally Posted by Bedford126

You don't have time to pick up the phone but you have time to be on here and search the net for the correct one?

1 year cats from Andrew page are £30.

The problem with the phone is if i order a part it comes and has the wrong connector its back to square one hence at least with the net in some cases i can see the connector type which i cant by phone.

Thanks for the info on that Andrew Page but MK is a bit far to travel as there mail order service only seems to be available to trade

27th October 2012, 15:56

Quote:

Originally Posted by saxova

Green to black

Red to grey

others are heaters

And you can see i broke the connector off = allowing to fit the mk1 sensor

Your wire colours are different to mine but to be honest i don't want to be cutting any part of the wiring that connects to the loom and in hindsight wish i never bothered with second hand crap.

27th October 2012, 16:09

Ahh fair does, was worth a shot.

Don't know why people are scared of cutting a connector off? It's 4 wires crimped into a connector - not rocket science or hard to re-fit standard connectors.

If You need to connect the lambda.. I'd use this - http://www.ebay.co.uk/itm/Set-Car-Bo...item2a24d9c87b

End of the day its wires what need to be connected - don't matter if its using the standard connector or not they're still connected lol

Just incase I didnt say 'connector' enough times.. Connector connector connector.

27th October 2012, 16:16

Quote:

Originally Posted by saxova

Ahh fair does, was worth a shot.

Don't know why people are scared of cutting a connector off? It's 4 wires crimped into a connector - not rocket science or hard to re-fit standard connectors.

If You need to connect the lambda.. I'd use this - http://www.ebay.co.uk/itm/Set-Car-Bo...item2a24d9c87b

End of the day its wires what need to be connected - don't matter if its using the standard connector or not they're still connected lol

Just incase I didnt say 'connector' enough times.. Connector connector connector.

I don't see any harm in cutting a connector that attaches to another connector i.e one not on the wiring loom but of course once you start cutting the loom you cant exactly just put it back in some cases hence why i dont want to do that method.

Nice find on that link though

27th October 2012, 16:16

Quote:

Originally Posted by saxova

l]

End of the day its wires what need to be connected - don't matter if its using the standard connector or not they're still connected lol

I dread to think how you "connected" your loom to that JP4s etc

It doesnt matter though. Its still conected.

hehehe..

27th October 2012, 16:28

Out curiosity if the Lambda was no good would the readings for this be a fail i only ask this as looking at the two readings i see that on the first one the readings are:

Fast Idle: Fail
Second Fast Idle: Pass

So on the second one both these past indicating possibly that the original Cat was ok but the Lamda was poo and now the replacement Cat is poo and the sensor is o.k just my observations i maybe completely wrong but surely you can see why i think this ?

27th October 2012, 16:33

Quote:

Originally Posted by Prickle

I dread to think how you "connected" your loom to that JP4s etc

It doesnt matter though. Its still conected.

hehehe..

Plug and play my friend, plug and play.

27th October 2012, 16:37

After looking at your results for that on a full OE system. my mk2 vts with a OE mani, under floor cat with a catback 2" superprint (lambda in mani and cat, so 2).

yours;

Mine

Fast idle test

CO - 0 04 % vol
HC - 32 ppm
Lambda - 1.00

Natural idle test

CO - 0 00% vol

Summary tests

Fast idle test - pass
Speed(2500-3000) - pass
CO (0.20) - pass
HC (200) - pass
Lamb (o . 97-1 . 03) - pass

Idle speed - pass
speed (450-1500) - pass
CO (0.30) pass

passed

27th October 2012, 16:50

Quote:

Originally Posted by saxova

Ahh fair does, was worth a shot.

Don't know why people are scared of cutting a connector off? It's 4 wires crimped into a connector - not rocket science or hard to re-fit standard connectors.

If You need to connect the lambda.. I'd use this - http://www.ebay.co.uk/itm/Set-Car-Bo...item2a24d9c87b

End of the day its wires what need to be connected - don't matter if its using the standard connector or not they're still connected lol

Just incase I didnt say 'connector' enough times.. Connector connector connector.

Quote:

Originally Posted by GeeDawg

I don't see any harm in cutting a connector that attaches to another connector i.e one not on the wiring loom but of course once you start cutting the loom you cant exactly just put it back in some cases hence why i dont want to do that method.

Nice find on that link though

Fucking brilliant.

Yes it does matter how you connect the wires and yes it does matter about the length of them too.

They have to be crimped and the wires have to be a set length as longer wire has a greater resistance giving your ecu the wrong readings. So cutting and crimping doesn't work unless you work out the impedance of the wire and the impedance needed your ecu will always read the lambda wrong.

27th October 2012, 17:01

You would re-crimp them into the new connector lol

OP has already said he isn't going to cut any wires so argument is pointless

27th October 2012, 17:22

Quote:

Originally Posted by Prickle

After looking at your results for that on a full OE system. my mk2 vts with a OE mani, under floor cat with a catback 2" superprint (lambda in mani and cat, so 2).

yours;

Mine

Fast idle test

CO - 0 04 % vol
HC - 32 ppm
Lambda - 1.00

Natural idle test

CO - 0 00% vol

Summary tests

Fast idle test - pass
Speed(2500-3000) - pass
CO (0.20) - pass
HC (200) - pass
Lamb (o . 97-1 . 03) - pass

Idle speed - pass
speed (450-1500) - pass
CO (0.30) pass

passed

Sorry buddy but im not sure what this post is supposed to mean ?

27th October 2012, 17:23

Just comparing

27th October 2012, 17:27

Quote:

Originally Posted by Prickle

Just comparing

soz bud i just asked as your setup is very different to mine as i only have one Lambda and standard exhaust