Oil buzzer when below 3000rpm - SA 2.5

[MayaTheBee]

Good day to all you knowledgable folk

Replaced piston rings, bearings and valve stem seals - along with all gaskets. Previous problem was oil leak, so buzzer would go mad when oil level was too low. Since the repairs... when driving for a while and slowing down speed, revs drop below 3000rpm then the buzzer goes mad. To get rid of the buzzer sound I either have to put the van in neutral, rev to over 3000rpm, then continue driving for a while and same thing happens - or I have to gear down, make sure revs are above 3000rpm... or buzzer sound continues.

I check oil level before and after trip, level is fine - no drop in level. The head is due fo a retorque now... what can it be, what do I do?

[NigelM]

Does the red oil light also come on? The buzzer signals low oil pressure, either a faulty sender (if your lucky) or you have low oil pressure (have engine pressure tested whilst head work being done)

Nige

[MayaTheBee]

Yip, red light flashes and buzzer sounds... don't think it's faulty sender though (was not changed)... prior to work done, light and buzzer triggered when oil level low, when topped up - no light, no buzzer... since work done light and buzzer when revs drop below 3000rpm. Pity their ain't no undo button for this job LOL

[NigelM]

Do a pressure test for your piece of mind, if all ok take a look in the Wiki section for other causes.