hi,
i have a 2001 c class with a 111 evo engine and on its mot test failed miserably on high co.hcc and lambda. the garage i use replaced the upstream o2 sensor but also noted oil in harness.i cannot remember exact readings but can recall co being 10.0 per cent on fast idle and hc and lambda also higher than expected.i have cleaned out ecu and wiring pluggs .
any thought or suggestions would be greatly appreciated.
thanks
jon
i have a 2001 c class with a 111 evo engine and on its mot test failed miserably on high co.hcc and lambda. the garage i use replaced the upstream o2 sensor but also noted oil in harness.i cannot remember exact readings but can recall co being 10.0 per cent on fast idle and hc and lambda also higher than expected.i have cleaned out ecu and wiring pluggs .
any thought or suggestions would be greatly appreciated.
thanks
jon
