Ituben the last year by 1999 1.8t Passat has had low oil pressure issues. I've had 2 turbos put in ,an oil pump, sending unit,4 engine flushes.pcv breather

It sounds like maybe the catalytic converter may be full,

Low oil pressure starts from oil pump sounds like its blocked either in the pump filter or galleries in the enging. I would first call the dealer and check what filter system is on the pump which may require removal of the sump to replace or clean.

I would certainly not use a car with this problem as it could well cause engine failure. Try a good quality flush first and run the car for 20 minutes minimum on tick over. Remove and put a good quality oil in and do another oil change again if required a month later with a flush to make sure the gunge is out.

If this does not help do an oil pressure test and see what it comes out at checking the manufacturers recommended pressures. If you have changed the oil, pump filters and done a second oil change and still get low pressure then you may well have a faulty pump.

I would also check the oil pressure switch to make sure it s not giving a false reading. The loss of power sounds like Turbo failure and again dirty oil to the Turbo oil feed pipes could be restricitng flow, hence why regular flushing oil and filter change is important.

I would get the Turbo checked out same time as on this model it could well be a Turbo and engine change if its gone that far due to the metal particles contaminating the engine.

1. Check your oil level. If oil level is not ok, correct oil level and find out why oil level was low and correct the problem. (Leaks, bad PCV, Burning oil due to severe engine wear, nobody has bothered to check it for the last 3000 miles, WAY overdue for an oil change, etc.) If oil level is ok, proceed to next step.

2. Remove the oil pressure sensor and install a manual oil pressure gauge. Run engine to verify low oil pressure. If gauge shows that the oil pressure is low, overhaul or replace engine. If oil pressure is ok, replace oil pressure sending unit and retest.

Oh no sorry to hear that. You did the right thing by stopping. If you have the 1.8 turbo engine this happens too often. The oil pressure sending unit could be the problem, but most likely it is the oil pump. This engine has sludge buildup problem & VW is aware of it, so there is hope. VW issued this update awhile back....

Passat owners. 1998 through 2004: VW has just made a warranty extension covering certain oil sludge repairs on these models. It is now covered for 8 years unlimited mileage and will reimburse for repairs made because of this problem. See your local dealer or contact VOA for more information.

Good luck, i hope this helps.

this is a common vw turbo issue. have synthetic oil put into the vehicle and replace the oil pressure sending unit. the sending unit part number is 06A919081J $24.30 from your local vw dealer.

8.5 hrs + parts sounds about right. But why would a 7 year old cars oil pump fail? They usually last a lifetime. Has there been a lubrication problem? Low oil, cheap oil, wrong oil? But then again my daughters 04 Toyota needed a valve job, head gasket and water pump recently. I'm doing 90% of work and it still cost about $2000. Her problem was bad oil!

need to find out the pressure the pump is putting out hook up a mechanical pressure gauge most use the sensor port to hook into and test pressure if pressure good than u may have a sludge problem where a flush might help-if pressure low possible clogging [sludge build up] of oil screen-[which a flush or back blow-compressed air -to clear or clean pick up tube and screen should help ]--or internal engine problem or oil pump bad

oil pressure should be atleast 18 psi @ idle on the engine however i think you have a weak/faulty oil pressure switch as well

Hi. Your symptoms are a strong indication of major sludge build up in the block region. This type of thick build up will clog up the oil ports, thus, reducing the normal flow of lubricant throughout the engine. This will cause fluctuating oil pressure, as well. Although this issue is a common cause of your symptoms, there are others. The next cause of fluctuating oil pressure will be a failing oil pump. This device can fail mechanically(gear failure). When this occurs, the engine oil will not circulate properly, thus causing the symptoms you are experiencing.

In conclusion, This type of problem will require you to administer a manual oil pressure test. This will confirm the oil pump failure. If the pressure test reveals that, indeed, the engines pressure readings are low, the oil pump will be the culprit. I recommend to administer a engine flush, and change the oil pump and oil pump screen, as well. Now, if the manual pressure test reveals that the pressure is optimal, this will indicate that the presser switch(sending unit) is faulty.

HI.There are only two possible issue here that will cause this to occur. The first issue will be a failing, or damaged oil pressure switch(sending unit). The sending unit is responsible for transmitting the correct information to the instrument that displays the pressure readings. If there is a wiring issue, or the sending unit has failed, this will cause the oil light to illuminate. In this case, the sending unit must be replaced. Ok, the next issue will be a failed oil pump. This will be the most common issue, in this case, due to the actual mileage on this particular vehicle. A oil pump can fail mechanically(gear failure). This device is not repairable, and must be replaced. The easiest way to isolate the issue, will be to preform a pressure test on the engine. There is a special tool, used by your mechanic, that will allow you, or him, to extract the true pressure readings for the engine, during idle. If the pressure test confirms that the oil pressure is low, or weak, this will lead to a failed oil pump. Now, if the pressure test indicates that the engine is running at optimal pressure range, this will indicate that the oil pressure switch(sending unit), is faulty. It must be replaced.