I am working on the car listed above N20.
When I received the vehicle, the owner told me it had been diagnosed with a catastrophic failure of the turbo charger. Upon inspection I found a bad timing chain. The chain was intact; however, the guides were destroyed. After replacing the timing chain, I found the turbo had bad oil seals. I replaced the turbo. I also replaced the turbo boost solenoid. At this point I was receiving these faults:
DME (ECU) 120408 Charging pressure control: Switch off as consequence.
DME (ECU) 130304 VANOS, exhaust: control fault, camshaft jammed.
DME (ECU) 130104 VANOS, intake: control fault, camshaft jammed.
DME (ECU) 131501 VANOS, intake, cold start: not controllable
DME (ECU) 130401 VANOS, exhaust, cold start: not controllable
DME (ECU) 128E01 Oxygen sensor before cat converter: Open circuit in Nernst line
I am not concerned with the oxygen sensor.
I have confirmed the VANOS pistons are free and the VANOS solenoids are operational.
The waste gate controller is pneumatic and operational.
I am scanning the vehicle with an Autel MaxiCOM MK808BT Pro.
I have since gone into the DME and “deleted adaptations” as well as “delete adaptation variable camshaft timing control” When I did this the VANOS faults disappeared and were replaced with.
DME 9ECU0 164040 Intake camshaft: installation defective
DME 9ECU0 164041 Exhaust camshaft: installation defective
I have also electrically activated the VANOS solenoids: on the intake it caused the engine to falter when energized at idle and on the exhaust the engine faltered and stalled.
Thursday, September 14th, 2023 AT 11:45 AM
(Merged)