oil pressure

[bsharp]

78 fiat 124--sitting at red light-oil pressure light came on-drove one mile to home. I would hope it is sending unit--any one had this problem and can the mechanical oil pump just quit

[RRoller123]

Did the car overheat or behave oddly? Ran ok that last mile? Revving normally? No burning smells?

[81SPIDERMATT]

or I could be just low on oil

[bsharp]

no not low on oil-just changed-not running hot--ran home ok--will try to check wires on sending units if I can find them

[kilrwail]

I had the same problem recently but knew the pressure was OK because I have a mechanical pressure gauge. Finally diagnosed the cause to be a blockage in the oil passage within the filter housing, that leads to the sending unit for the light. Cleaned it out with a piece of coat hanger wire and compressed air and it's all good now. I've no idea what caused the blockage - something that didn't make it into the filter.

[bsharp]

changed the sending unit and it fixed it--sending unit awful dirty in the vent hole

[azruss]

That hole is actually a treaded jet and can be removed and cleaned.