17704 error mapped cooling system (P1296) - 18010 power supply term 30 voltage low intermittent

P0012 Advance set point not reached 16396 Bank 1 camshaft air intake.

 

Firstly car was running smooth when engine electronic fault warning (yellow) came on in which the codes above were found after diagnostics.

Soon after it developed intermittent problems -  TEMP was too low - OIL PRESSURE Red flashing warning kept coming on and became more frequent.

TOP ENGINE CAM - Started to rattle not always but became more frequent and noticeable at idle low speed.

 

 SUMP- Dropped and inspected found traces of carbon in oil and strainer was clogged.

Replaced strainer and pick up pipes were cleared not sure if they were replaced.

Oil change and filter.

 

This did not top the oil pressure red flashing problem and the engine fault light came back and it was again running intermittent rattle and low temp.

 

Next step was replacement of Temp thermostat and oil pressure switch.

 

This seemed like it was sorted and car ran better however soon it began sounding tappy at front idle not always but began getting more frequent and worse.

Then engine fault light came back on and oil level warning (yellow) engaged although level was okay.

Temp was too low again and not as frequent as b4 oil pressure red warning would come on at hills bends slowing down after motorways.

 

Had second diagnostic and 17704 was back not confirmed if the other errors were though.

Then the rattle tappy top end has become very bad and constant.

 

The temp sensor possibly is the cause of the 17704 error and that was plan to sort next but due to the rattle it seems like the cam shaft has suffered from the oil pressure issue and this had happened b4 i had car as in history notes on oil pressure and contaminant in oil work was done then turbo changed oil cooler and related other bits.

 

What options are there for this as it looks like top end cam shaft is doomed advise on replacing or reconditioning.

@mixmaster - I think you've diagnosed your own problem; camshaft lobe wear caused by running with low oil flow and pressure.

Okay now have inspected top of engine and not good Cam chain culprit for rattle adjusting fault, the oil pressure and temp mapping errors linked to this as thought and silver shiny flecks of metal in oil so engine pretty much had it.

 

Having only had this car for six months I am considering options for replacement engine.

My budget is limited and costs need to be economically viable with the consideration of cars value and condition.

 

Used engines seem to suit my budget but there are some criteria and questions in which I require advise and knowledge for.

 

1) My car has been remapped 200bhp my tech car knowledge is limited so I assume the remapping is at the ECU im not too sure but I ask if I replace engine will the remapping work still.

 

I have sourced a few used engines 1.8 petrol VRS AUQ with all ancillaries and service stamps etc... £295 - £700 need to find out how much to fit any help very welcome.

 

 

 

 

@mixmaster - Apologies if I'm educating one of my parents' mothers here, but the primary valve timing is from a belt on the RH end of the engine; the chain you've found on the LH end drives the other camshaft, so it's very short, and I'd not expect it to be the source of the rattle. Can you do a shot of the valve chest with the cover off?