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02 57 GI Engine Protection Mode

D

dustin_johns

New member
Running at 3500 RPM for a coup

Running at 3500 RPM for a couple of hours. Audible Alarm went off. Engine would not exceed 2200 RPM. Oil Pressure/Levels OK. Water Temp 175. Could not get the system to reset. left vessel overnight at local marina. Came back next day and no alarms. Could this just be a bad sensor. Just changed the risers and manifolds the week prior.
 
"From the VP owner's manua

"From the VP owner's manual for your engine:

Engine protection mode (EFI systems)

In a low oil pressure or engine overheat situation, the EFI system enters an engine protection mode. In these situations, normal
engine operation is limited to 2500 RPM or less. Above 2500 RPM the engine will exhibit poor running characteristics. Use the oil pressure and water temperature gauges to verify a problem exists, then check the engine for proper oil level and the water inlets for obstructions. The low oil pressure/engine overheat problem must be corrected before the engine will return to normal operation.

To reset the engine protection mode after the problem is corrected, shut off the engine, then restart it.

NOTE! If the problem continues, contact your nearest Volvo Penta dealer and have the engine

So you may want to consider checking the oil and water temperature sensors and associated wiring."
 
The oil and temp was OK when t

The oil and temp was OK when the sensors went off. I am only aware of the sensors located on the risers. went through the owners manual and Engine manual and could not find any others. how many are there and is there a way to isolate the sensor thats bad?
 
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