Originally Posted by
mattxr3i
Think you need to change mechanics. The reason the light is still on and the car is running badly is because the second lambda isnt reading any emmisions at all. The second lambda is used to determine the efficiency of the cat and to validate the first lambda to some degree.
As for over 5k, it may not open at a constant 5k as it may be trying to save fuel. To test, give the throttle a flick to simulate acceleration and see if it opens. Does sound like the ecu isnt able to determine whether it is under load.
My advice really is to go somewhere with a rolling road and a diagnosis computer to see what is going on. Shouldnt cost much.
When the EML first came on I got the code read and it was the 2 lambdas. Bank1 sensor 1 and bank1 sensor 2, both relating to the oxygen sensors and heaters. Codes p0135 and p0141. I got 2 new lambdas from euro car parts and fitted them and the EML light was still on and still the same codes came up. The car didn't run correctly when the rear lambda was in and was over fueling we think and you could tell the car was running rich. When the rear lambda was removed the car livened up and there was throttle response again but that has soon come and gone. Now more codes have come up saying about over fueling. Codes p1131 and code p1132 if I remember correctly. Since the first time the EML came on its just been problem after problem. I've had 2 garages local to me check the car and they can't find any obvious faults. When I start the car the inlet manifold opens and stays open. I can Rev the car to 5-6k revs and the inlet manifold says open, there is no movement in the cable other than when I start the car and it opens.