desperate need for emmisons help!

kevwill · Aug 11, 2014

Are all of them black? And are these the brand new plugs you've fitted?

dogsbody · Aug 11, 2014

Have you taken it for a decent, high speed run? A good blast could do wonders.

I think that you're brave putting a 200k lump through a Tetra-clean. You never know what you're going to disturb.

tomcat59alan · Aug 11, 2014

dogsbody said:
Have you taken it for a decent, high speed run? A good blast could do wonders.

I think that you're brave putting a 200k lump through a Tetra-clean. You never know what you're going to disturb.

See post 2

chriswood6725 · Aug 11, 2014

Yeah I know it's brave (or stupid) but it's done now and the car survived

Will get it onto the emmisons reader tomorrow at the local garage and compare the results...

Fingers crossed it's within the limits!

chriswood6725 · Aug 12, 2014

Had a second emmisions test done, it's better but still a bad fail...

CO - 5.183%
HC - 216
lambda - 0.840

So it's still running rich after all the effort. The tester suggested an oil change as it's pretty mucky - can this throw the emmision results?

Thanks

eightinavee · Aug 12, 2014

For the Co to be that high and the Lambda that low its clearly not seeing a rich value from the oxygen sensors to narrow down the injector pulse width.There are still two options here,either there are still enough misfire events to keep a lean signal or for whatever reason the oxy sensors cant/wont switch.
I think this is where you either need to get technical or find a decent indy to look at it for you.(Looks like the Cats are still trying their best though...)

stopover · Aug 12, 2014

Still think you should do an adaptive reset

At 200k are you blowing any blue smoke?

stopover · Aug 12, 2014

Where are you?

chriswood6725 · Aug 13, 2014

There's no smoke at at, the car is on a replacement engine but not sure of its mileage

I'm in Dorset, is there anyone local who can do the adaptive reset?

sassanach · Aug 13, 2014

is this something that has just happened? or has the engine been apart recently.

chriswood6725 · Aug 13, 2014

Hiya,

I bought the car recently and am starting to get it ready for an MOT (October). Going to put the multi meter accross the Lambda units and see what readings I get...

Thanks

Chris

The Mad Hat Man · Aug 13, 2014

Its not a good idea coming on here looking for emissions - Grunt might see your post and you will be submerged in tissues

uke:

sassanach · Aug 13, 2014

im not sure if its the same setup on the gems p38,but on the disco gems setup its quite common to switch the fuel temperature and the engine temperature wiring over which causes the fuel trims to go massively rich.basically, the fuel will always be cooler than the engine,therefore the engine thinks its cold when in fact its warm.does that make sense?ps only landrover would use the same multiplug on two different sensors next to each other

chriswood6725 · Aug 13, 2014

There are two plugs the same size and shape at the front of engine,

One is green and plugs into coolant hose (just I front of it)

Second is a brown plug that's to the right (as you look from the front)?

I've just looked at both lambda sensors and they are absolutely caked in carbon, just wondering if I can clean them off with something..

kevwill · Aug 13, 2014

chriswood6725 said:
There are two plugs the same size and shape at the front of engine,

One is green and plugs into coolant hose (just I front of it)

Second is a brown plug that's to the right (as you look from the front)?

I've just looked at both lambda sensors and they are absolutely caked in carbon, just wondering if I can clean them off with something..

Plugs the right way round then. Are the lambda sensors fitted in tightly (to get carbon on the outside); better check when you're cleaning them.

chriswood6725 · Aug 13, 2014

Sensors have both been cleaned, and they were in tight. Doesn't seems to have much difference, infact having started it up, idle is a little worse than before?

I guess there is nothing to say the lambda are not still at fault? If I can find out my multimeter, what's the test to check if voltages are fluctuating?

Cheers

Chris

chriswood6725 · Aug 14, 2014

OK quick update for those who helped me out..

Proper diagnostic has found both lambda units are not working (providing a constant voltage). I've ordered two new hits (ngk) from motor factors, and will be installing them tomorrow! Should hopefully sort my high emmisions out....

Saint.V8 · Aug 14, 2014

chriswood6725 said:
OK quick update for those who helped me out..

Proper diagnostic has found both lambda units are not working (providing a constant voltage). I've ordered two new hits (ngk) from motor factors, and will be installing them tomorrow! Should hopefully sort my high emmisions out....

Fingers Crossed for you...let us know how you get on!

chriswood6725 · Aug 20, 2014

Quick update for anyone interested...

Emmisions were a brilliant pass (after two new lambda sensors)

Fresh mot after replacing two bushes in a radius arm - happy days!!!!

tomcat59alan · Aug 20, 2014

chriswood6725 said:
Quick update for anyone interested...

Emmisions were a brilliant pass (after two new lambda sensors)

Fresh mot after replacing two bushes in a radius arm - happy days!!!!

:high5:

desperate need for emmisons help!

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