check engine light is on in My Audi n i still dont know why

[vishal]

after getting check engine light i got it diagnosed and found out the the cylinders 4, 5 and 6 are misfiring and was asked to get the following things changed

ignition coils

spark plugs,

Coolant Temp sensor

and repaired crankcase vacuum hose.

the car ran fine for 5 days without the light and i was under the impression that it fixed and again the light came up

so i changed the Evap purge Valve and then replaced one Catalytic converter (Bank 1)

but the light still remains and now they want to change the Engine Control Module, but they dont guarantee that it will solve the problem.

All this cost me 10,000K and i am still pointing arrows in the dark i feel cheated and want some advise please

[audiawd]

check engine is a big ocean of possibility and i don't think you are getting cheated

get he ECM changed and see it is repairs it but one thing is for sure that ECM faultily is one of the causes of misfiring

all the best

[ansaari]

Also doubt on air seals, especially manifolds one and butterfly ones. Good luck, mate.

[iroc]

Can you be more specific on the model and engine code. Since one bank of the engine is misfiring it could also be faulty valve timing.