It was indeed the oil pressure sensor. With a new one, the genset works like a charm – what a relief. If it hadn’t been the sensor then it might have been the control board – $1,200 or worse yet actual low oil pressure which could mean big bucks. So I don’t feel so bad spending $100 for the sensor and a manual oil pressure gauge (to confirm the sensor) and another $100 on brokerage and expediting fees. Unable to get a clear answer online or from Onan (buy our part number xxx), I took a chance on a generic from Budget Marine which they had to send from St. Martin. All has come up roses for now. So we are once again flush 🙁 with water.
