Gti 2.0 8v emisson's

[robz]

that means yours is chuffed buddy!
its running good now cos the ecu isnt getting wrong signals form it!
its prob overfueling/underfueling now but at least it works!
get a new one and i bet your emissions come down!
ps - well expensive new - try and get a 2nd hand one!
thats what i did - job done!

[Chief ka kar]

Do you think the emisson's will be high because am hoping to get the mot sorted then get another one.
But what gets me is that it did'nt show up as an error when i had it plugged in so if it was giving bad signal's then it should have shown up on the reader should'nt it?

[spunkymonkey]

Whats got me thinking with this is the cat is working ok then whether its over fueling then the cat should still sort it. If its failing the lambda test on the CO machine this usually points to a leak somewhere in the exhaust.

If your car passes an mot with a CO% of 0.25 with the cat fitted and its running spot on then with the cat removed it should only be around 0.75%. It would have to be seriously over fuelling for the cat and lambda to not manage it. Then it would smoke like a chimney.

I would run it low on fuel, add some cat guard to the fuel then give it a damn good leathering. 70mph in fourth down the mway for 20mins or so.

[Chief ka kar]

The garage checked for leakage on the exhaust with so set around the gasket's and it never drew anything in.
He did tell me that the car was way overfueling on idle, and it's drinking it way more than my vr6.
Am just hoping it passes tomoz without the maf sensor plugged in , then at least it's got an mot then i can sort out buying another flow meter from somewhere.

[gtigolfthree]

Tends to run rich if the maf is faulty.

Just to update i had a bit of a play around to see if i could find a split pipe.
No joy but i unplugged my maf sensor and the car did'nt stall, i thought thats funny the car should stall.
I took it for a test drive and she run's sweet as a nut
In tomoz to see if the emisson's is sorted.
Somebody work that out.

I already did. If thhe maf is not working then of course it will not run worse when you disconnect it. Try cleaning it, if not replace it. I ran around for ages with my maf disconnected cause it was broke, went like stink but wouldn't tick over and drank gallons of juice.