VW Transporter T4: Flashing Oil Pressure Light?

Good day, ladies and gentlemen.

I am again requesting your assistance.

I have a T4 van with an ABL engine (50 kW), manufactured in 2000, with 25,000 km on the odometer. Occasionally, the oil pressure warning light starts to blink. The light blinks for approximately 10 seconds and then turns off. The oil level is correct, and the engine runs normally. I use 5W40 oil.

What could be the possible causes? Has anyone else experienced similar problems? Of course, I also used the forum's search function, but I haven't found any helpful answers.

Best regards,

Motronic.

What could be the possible causes? Has anyone else experienced similar problems? Of course, I also used the forum's search function, but I haven't found any useful answers.


I find this very useful: https://community.dieselschrauber.org/en/viewtopic.php?t=3711&highlight=%F6ldruck+blinkt

CU Gremlin.

Hello everyone,

Yesterday, I:

- Oil pan removed and checked for deposits. Oil pump mounting supports inspected. Oil pump checked for cracks and leaks. Oil pan gasket replaced - no error found.
- Oil filter replaced (VW - original part).
- Oil changed: Replaced Esso 5W40 with Aral Basic Tronic 10W40.
- Oil pressure measured: warm engine, idle - approximately 1 bar; 2000 rpm - approximately 2 bar; the pressure increases with engine speed - no error.
- Replaced oil pressure switch (Braun, 0.55 - 0.85 bar).

For the last 10 km , everything is fine, hopefully it stays that way.

Best regards,

Motronic.

Good news!

The values look good.

Did you measure the oil pressure with the old oil?
Perhaps we could have saved ourselves a lot of trouble...
It was probably just the pressure switch.

So, I wish you continued healthy oil pressure as well!

Best regards, Georg.

Hello,

I didn't measure the oil pressure with the old oil. It was quite strange that the warning light only flashed in a certain load range (approximately 2000 to 3000 RPM). Everything was fine at idle. Hopefully, it stays that way.

Thank you for your help.

Motronic.