Oil Pressure Sensor Alarm on a 2005 4.3l Motor

• Sep 28, 2016

• #1

Bucit

New Member

Mar 12, 2010

3,144

St. Petersburg Florida

Boat Info

2005 280 Sundancer
2004 SPD-104 Achilles w/ 8hp Yamaha

Engines

Twin 4.3 MPI's with Alpha drives.

Haven't used the boat much this summer but did a weekend trip last weekend. Starboard motor lost some oil pressure and minutes later the Smartcraft alarm went off showing oil pressure sensor. Can I get this part at NAPA, WM or should I use a Mercruiser part. Also, any idea where it's located.

Thanks!

 

• Sep 28, 2016

• #2

BillK2632

Well-Known Member

Jun 25, 2009

2,916

Lake Norman, NC

Boat Info

2014 Cobalt R5

Engines

Volvo Penta V8-300 DPS

There is an oil pressure sensor that sends an oil pressure signal to your guages, there is also an oil pressure swtich that shuts off the fuel pump when there is no oil pressure. Both are located port side below the spark plugs. The pressure sensor does not have to be a Mercruiser part, can get them at WM, NAPA etc. The oil pressure switch might only be OEM.

 

• Sep 28, 2016

• #3

Bucit

New Member

Mar 12, 2010

3,144

St. Petersburg Florida

Boat Info

2005 280 Sundancer
2004 SPD-104 Achilles w/ 8hp Yamaha

Engines

Twin 4.3 MPI's with Alpha drives.

Motor ran fine, oil temp was fine and once the alarm went off my pressure returned to normal (same as the port motor). The SM guage showed oil pressure sensor so looks like I'll be changing it out. Anything I need to be aware of when changing it or is it pretty straight forward?

 

• Sep 28, 2016

• #4

BillK2632

Well-Known Member

Jun 25, 2009

2,916

Lake Norman, NC

Boat Info

2014 Cobalt R5

Engines

Volvo Penta V8-300 DPS

Should be pretty straight forward - screw the old out, screw the new one in and connect the wiring. Make sure the threads are clean, it has to have a good ground. The one thing I am not sure of is if there is anything special since you have SmartCraft.