The N62B44 has a two-stage oil pump. The first stage is used during start-up and once the oil is warmed up, this is deactivated and then second stage is activated to provide more pressure at low engine speeds. Pressure specs at the pump with room temperature 20*C oil are 1 BAR at idle and 4-8 BAR at full unladen engine speed (6500) . Why didn't your previous technicians thread an adapter with a hose to a gauge. At the oil pressure warning sensor port. This is common sense diagnostics.

Have not done that. I will ask him to, but just understand the Low Oil Pressure. warning did not come on until about 8 pm when he was packing up to leave.

Camshaft bank codes can be caused by stretched timing chains, a failed hydraulic tensioner or a damaged guide. Really need to be using INPA in the correct menus to determine what's going on, and to determine if the timing is indeed correct.

Second time someone has mentioned the timing chains being stretched. Sorry for my ignorance what is the INPA?


Third, all coils should be bench tested, along with plugs inspected.

He did test all the coils, and inspected all the plugs. Bench tested the coils.

Because the oil pan and sensor were removed/changed was the oil sensor reset procedure performed ? What about the ram_backup cleared, this has to be done once vanos solenoids are replaced.

I am pretty sure nothing was done to reset the oil sensor. What does one due, is that through the software, coding machine?

On the ram, I have cleared the codes from the scanner, but I don't know if that is same thing. Again, what would that procedure be?

When you say the engine is toast if the timing chains are stretched, can you not just replace the timing chains? And how would you know if they are stretched?

I appreciate your comments, maybe it will help me towards a resolution.