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.
 
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!
 
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
 
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...)
 
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?
 
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
 
Its not a good idea coming on here looking for emissions - Grunt might see your post and you will be submerged in tissues :puke:
 
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
 
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..
 
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..
Click to expand...

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