Volvo IPS 500 Overheating

Capt. DAD

Any luck re over heating problem? We're all interested to learn results. Hope it is moving forward well in your research of the cause - Best, W.

I'm glad to hear it worked out for you, unfortunately after a lot of frustration.

From what I understand, Volvo set them up in the beginning with the seawater strainer after the raw water pump. Then in later years switched it around and put the sea strainers before the seawater pump. I do believe the water inlets in the drives have screens on them.

Hi,

Thanks for posting back with the result.

Hi Capt. DAD

Glad you located and seem to have solved your twin engines’ similar overheating problem.

You mentioned early-on: “Boat performed ok the first 200 hours.” i.e. prior to overheating suddenly appearing. After a period of time and collective forum thinking, currently you mention; “We removed for third time the coolant heat exchangers and found them clogged again”.

1. Did you experience the overheating problem being relieved each of the first two times you cleaned the heat exchangers; then it soon returned, as compared to your first “... 200 hours.” of operation... or was the third time of cleaning them the only one that actually stopped the overheating?
2. Are you cruising in different waters as compared to your “... first 200 hours.”; i.e. waters that hold more seaweed or other organic flotsam than the waters in which you cruised during your first 200 hours of operation?

Reason I ask these questions is to determine the following: If you are cruising in same general vicinity as the first 200 hours of operation, and suddenly getting your heat exchangers plugged as compared to the first 200 hours then the water’s increase of seaweed or other organic flotsam is notable. I feel this is important to ascertain, as it may help to understand to what extent the ocean areas that you ply are altering their general composition... due to climate circumstances.

Happy Boating!

Thanks, W.

Hi,

This was in the very first post in this thread, nowhere else do I see any mention of a second cleaning of the coolers nor any improvement between cleaning and fouling occurring.

Cpt. Dad - What was the difference in the cleaning procedure that fixed the problem when done the third time compared to the other two times?

Never heard that Volvo Penta should be restricted to mono-climate waters...

AMG - I'm "fishing" to learn what the real scene is. - W.

The scene is 250 hours of use over three years, I would guess the temperature has been both up and down during this period and that certain things thrive at certain temperatures, clogging the cooling system...