Mk5 2.0 TDI not starting - Oil pressure warning lamp - what to do?

[parso_rex]

I'm in the inner west if your still searching , I'm sure I can slip by and give it a quick scan

Mark

[Lams]

is it usually cold when it struggles to start?
I have seen a number of 2.0TDIs struggle to start in the cold caused by different issues

[RigoX]

Hi Ian, now that you mentioned it I remember that a month or so ago the car wasn't starting well. On a second attempt I had to turn the key for quite some time to get the engine started. Eventually it did (on the second attempt)... and never had a problem since then until on Monday the car just didn't start at all. Had a go tonight again, but nothing changed. Have someone coming with a VAG-COM on Saturday if all works out and hope to get a better picture of the problem.

[RigoX]

Hi Mark, thank you for offering! Just sent you a PM.

[RigoX]

Hi Lams, I guess cold is relative... would not think the car is suffering too much with Sydney's mild winter. What would be the problem though? It's still to warm to cause oil or diesel to become less runny/solid.

[Lams]

I wouldn't call it cold either, but the 2 cars that gave me problems only played up first thing in the morning in winter (Brissy winter I might add)
one of them we never found the problem, it would crank and crank and not fire. We can push start it, we never tried jump starting because we never suspected the battery (and we live on a hill so just get it rolling and away you go)
The other one, the ECU wouldn't wake up when it's cold - the usual dash lights aren't there when we switch on ignition. DSG indicator on the dash would flash. The problem is still there but the car lives in a garage now and the garage seems to be warm enough to keep it going. Jump starting didn't work on this car
While chasing the faults on both cars, we discovered many things that could cause starting issues - dirty fuel filter, dying battery, but I'm afraid I can't put my finger on anything definite here. Perhaps the oil has the wrong viscosity... Good luck!

[RigoX]

Hi Lams, temps went up here the past few days - but no luck yet.

[RigoX]

Got someone over this weekend to plug in the VAG-COM, but no luck!
No error codes whatsoever.

Also filled up oil and diesel on Friday to exclude some more silly options.
No idea really what it could be. Just came across a thread on this forum (MKV Coil Pack Recall?) talking about a VW recall on coil packs for MK5. Would that include my model?

BTW, does anyone have a link to a great DIY resource with guides and pictures? Maybe I could rule some more options.

[WA Euro]

Hi again, sorry to hear that you are still having issues

The coil pack recall is for petrol models only

Because the computer is not logging a fault, then the computer doesn't think that there is a problem.

My next suggestion is to disconnect the negative lead of the battery for about 30 mins. this will let the computers power down and reset. Then reconnect the battery and use a jump pack or leads to give an extra boost to the power. (sometimes a battery can have enough volts but not enough amps - and vice versa - so the computer may not activate some systems).
When you turn the ignition on, there will be more fault lights (steering wheel, maybe ABS/ESP also) these will go away once the vehicle is driven)
When you try to start the car, keep your foot flat to the floor on the throttle and crank in a long burst rather than short ones - EVEN IF the "STOP" light starts shouting at you.
If you start to smell burning electrics then leave the starter to cool down for 10 mins but it takes a while for this to happen.

If this doesn't work then time to visit the dealer i reck'n

hope this helps!?

[Transporter]

Yours is the TDI, no coils then.
Since you didn't get any codes, I would assume that you check the fuel supply first. Disconnect the inlet and outlet hoses from the fuel filter and get some clear PVC tubing (hose) 2x 100mm will do, you will need some metal tubing to insert them in the PVC tubings and then in the hoses which connects to the filter. Reconnect the hoses with the clear tubing attached and while cranking, check if there are no bubbles, if there is a lot of bubbles, you've got the air leak somewhere in the fuel system.



Or maybe, it's the time to call mechanic, see some independent VW specialist in the forum. Like Camden GTI, they're good and helpful.

Edit:
Do not disconnect the battery and don't put your foot on the accelerator (that can confuse the ECU in the car). But make sure that the battery is good as WA 79 cabby suggest, if you connecting extra battery with the leads make sure that the leads are good quality, so you don't melt them possibly catch on fire.

Also you could look in here Diesel fuel filter How to replace