N62 4.8is- Engine REBUILD after Valvetronic/Vanos issues/codes

[Homerlovesbeer]

Hi guys,

I've been watching lots of youtube videos on the N62 motor after buying my E53 4.8is and I came across Timm's BMW Repairs and Information channel where he talks about various issues with the N62 motor.

I am pretty annoyed that I may have issues after I spent $500 getting a BMW dealer on the other coast here in Australia to do a pre purchase inspection as I live on the East coast and had limited time to fly over and organise.

After finding the owner who spent around $8,000 in repairs a couple of years ago and having a chat over the phone, he tells me they tried to sort out the valvetronic issue which resulted in a rough cold idle and misfires even after going back to the mechanic to try and resolve. He tells me their fix was to unplug it!

So after hearing this I start looking through youtube videos while I wait for my car to arrive (3-4 weeks to be shipped from west coast to East).

I thought it might be a simple fix such as PCV valves etc or the owner I bought it off (who bought it off the guy who spent good money on repairs) had fixed it but I also wanted to do my own maintenance so I after a lot of research on Diagnostic computers I settled upon the new Launch X431 CRP919X OBD2 Scanner as it appeared to do a lot and the reviews were raving about how GREAT a scanner it is etc (I sort of feel conned now).

Anyway, the car finally arrived and I ran a diagnostic scan and this is what I found.

There are 4 issues for Power system：
1.DME: Camshaft Control, Exhaust, Bank 2 - Output Stage
2.DME: Function, Camshaft Control, Inlet, Bank 2
3.DME: Variable Intake System - Temperature Warning Threshold
4.DME: Variable Intake System - Plausibility

There are 1 issues for Chassis system：
1.EHC: CAN Bus

There are 1 issues for Safety and Security system：

1.DSC: Steering-Angle Sensor, Supply

There are 3 issues for Vehicle body system：
1.SM/LSM: Steering Column, Radial: Short Circuit
2.SZM: Seat Heating, Seat Cushion, Right, Open Circuit
3.IKE: Electronic Braking-Force Distribution

There are 2 issues for Infotainment system：

1.RAD: Fault In Aerial Power Supply
2.Fault DSP_2

More in Depth here

RAD (Radio)
DTC Qty (1)

02 RAD: Fault In Aerial Power Supply

EHC (Electronic Ride-Height Control)
DTC Qty (1)

32 EHC: CAN Bus

DSP (Digital Sound Processor)
DTC Qty (1)

02 Fault DSP_2

IC (Instrument Cluster - INSTR)
DTC Qty (1)

BD IKE: Electronic Braking-Force Distribution

And now for the quite concerning things;

ECM (Engine Control Module - DME/DDE)
DTC Qty (4)

27BE DME: Camshaft Control, Exhaust, Bank 2 - Output Stage
2732 DME: Function, Camshaft Control, Inlet, Bank 2
2821 DME: Variable Intake System - Temperature Warning Threshold
2820 DME: Variable Intake System - Plausibility


After watching a youtube Video of Timm going through how to buy a good N62 I noticed his cold start and mine were quite different which is why I have now recorded my start to compare.

Timms



Mine



So I really want to fix my possible valvetronic issue as my main priority. I have done an oil change and replaced all the spark plugs. The oil was pretty dark but the old filter was pretty good and there isn't any sludge or build up anywhere in the system I can see, in fact the internals looks very clean just like Timms.

So now I'm in contact with the BMW dealership who did the inspection and having a conversation about how to resolve this.

In case I don't have any luck I want to have a crack at solving this myself, with the help of you all (thank you!).

Here is the last big invoice for the car.

Cheers and thanks!