Alarm problems on a Volvo MD 22L

[rhoda rose2]

Hi I have a problem on my Volvo MD 22L. The temperature alarm sounds and the warning light comes - but the engine is running at a normal temperature the cooling system appears to be working perfectly, nothing in the sea water strainer. When the alarm button is pressed the alarm stops, but then comes back on.

I disconnected the leads to engine temperature sensor and the alarm sounded. I checked connections in the 'stack' and cleaned connections and replaced the relay switch. After that, the alarm sounded when the engine was switched on - the alarm sounder went off when the alarm was pressed but alarm light stays on.

There is a negative connector that looks suspect and I need to replace it - see picture attached., do readers have any suppliers they can recommend for this type of connector or suggestions for sorting out this problem.

Many thanks for your help.

 

[Bobc]

It won't be that.

It is either a faulty sender unit, a fault in the panel, or some corrosion in the wires somewhere.

I'd start by checking all the relevant connectors and maybe replacing them all.

 

[Scapegoat]

Check that the water strainer is sealing properly- if not, the alarm will sound soon after setting off as it needs to be airtight.