VS V6 losing oil pressure

[Goum]

Hoping someone can give me feedback. I have a VS Statesman V6 and am having trouble with the oil pressure. Basically, after driving or idling for 2 minutes, the oil light comes on and it loses oil pressure. The engine begins to get noisy and I need to turn it off.

My mechanic has tried engine flush treatments, two or three times, no luck. I have spoken to other people and they have said it could be heavily sludged up internally and may need to be dismantled and rebuilt. I was wondering if someone has had this problem before and may be able to help. The car has done 178K km's and regularly serviced.

It may be a coincidence, but the problem started straight after I picked the car up from the mechanic's after being detailed, to sell. The engine was cleaned down, is there some setting in the computer that might have gone haywire?

Will appreciate any feedback.

[Shortstuff]

If it was in the engine management, I wouldn't have thought it would make the motor noisy. But still, i'd try replacing the oil pressure switch. It's only about $20 for a genuine one and 10 minutes work to replace. The oil pressure switch kept bringing the oil warning light on when I had my VS, but it didn't get noisy.

[alex2_s]

Some mechanics are retards and try to put things like 0W-30 in a commodore specifying 20W-50 (its racing oil, better right? *rolls eyes*)

It made my oil pressure light flicker ever so slightly under heavy acceleration (just before it changed gears).

[Goum]

Thanks for the comments. We replaced the oil switch and still no luck. After the light comes on the engine get noisy and the temp raises, as well as, loses power. If I was to keep driving I really think the motor would seize!! I think it might be time for a new engine.

While I'm at it, will a V6 out of a VX fit the VS?

[hako]

The oil pressure relief valve may be blocked open - this will drop the oil pressure once the oil warms slightly...hydraulic valve lifters will then collapse due no oil pressure causing noisy engine and reduced power due to valves not fully opening.

[burnz]

blocked oil strainer happened to my mate.

possable solution: using an orbital sander to vibrate the sump to sonic clean the oil pickup, this worked and hasent said anything bad to date.

[burnz]

double post

[-=ApheX=-]

oil pressure sensor replace, aside from that check error codes...

[6 shooter]

could it be the oil pump crapped out. my vr did the same.
i can say one thing though if you want 2 keep the engine dont keep driving it. I managed 300ish ks of thrashing the balls off it before ith threw a bearing... right out of the side of the block.