Hello, everyone own the r50 which drove the 2002 model year 120,000 km.I want to get some help or advice on driving. Oil pressure warning lamp only occurs when idling There is no warning light above 2000 rpm. The current action I took was to clean the oil filter and engine oil change oil pick-up tube. What should I do to get rid of the warning lights? I ask for your advice and experience.

 

You have either a weak oil pump, worn bearings, or least likely a bad oil pressure sensor. I would verify the oil pressure with a manual guage, or if not too expensive just change the oil pressure sensor. If you find that the oil pressure is truly low, you should consider how much money you wan to spend on a 18 YO car, as a deep dive to replace bearings will be expensive. You could try using a thicker oil, like 10W40 or 20W50 & start saving for a different car. Make sure & change the oil filter, it could be cogged too.

BTW I play euphonium too . . .

 

Make sure the drainback plunger is present and not dislodged. A quick search will reveal that it a very common issue for the symptoms you have. I had that happen 2 weeks ago after an oil change.

 

If the oil level is good, check the oil pressure sensor on the filter housing. Remove the red locking clip and unplug the connector, if there's oil in there, the sensor is gone. I had that oil light warning at idle a year or two ago and that happened while being at a drive-thru, so stopping the car wasn't possible, kinda panicked at first. The sensor took a dump and when that happens, the oil bypass the membrane and leaks into the connector.

Some people here are jumping to major problems first... Start with the basic things... A bad oil pressure sensor is more common than you think, the plunger in the housing would be the second thing to look for. If it's really neither of those, look further.

How often have you seen a Tritec engine with a weak oil pump or worn bearings?