Why does the oil light stays on? - 1993 Dodge D150

weak oil pump blocked oil filter or oil ways try using flushing oil and then change the filter

Your vehicle may have an "oil level" sensor built into the oil pan. If so, and the sensor is bad, the dash will constantly tell you that the engine needs more oil even if it does not. Checking the oil with the dipstick, a minute after the engine has been turned off on level ground is always the best way to check your oil. Try scanning the vehicles computer systems to see if there are any fault codes. The warning light may also be on a timer that just needs to be reset. The "Check Oil" light should be separate from the engine oil pressure warning light. As long as the engine oil pressure light stays off, you should be ok. Checking the oil pressure with a manual gauge would be a good idea as well.

The first step would be to manually test the oil pressure to find out if it is a faulty light or not.

That could be from not having any oil pressure "oil pump failure, clogged filter, etc" or from a faulty oil pressure sending unit. More tests would need to be performed but is it really an oil pressure light or is it the change oil light. More info would be needed

if the light stays on and the engine is quit replace the oil pressure switch

CHECK YOU OIL

Just a idea. If the car is running at idle and the oil light blinks , it usually from low oil pressure. At a idle your seeing the light respond to the revolutions of the engine. ! thing to try is to replace the oil pressure switch on the engine block. And #2, Most causes in a VW is that the vehicle overheated at one time and weekend the oil pump,or massive amount of miles.

Hi there... the oil pump is in the oil pan.

sounds like low oil pressure check oil pump, try thicker oil just to see

would be best to have oil pressure checked with a mechanical gauge to be sure you have oil pressure.
hopefully you just have a bad oil pressure switch this is located on oil filter adapter rt above filter