[C320-list] Water Temp warning light

[Chris Burti]

I found these two part numbers...which need to be verified...

Water Temperature Sender 035109
Water Temperature Switch 037493


I'm guessing, but I suspect the part likely to cause a mistaken signal
to the light would be the switch as the light would just need an
on/off capability and the sender would be for the gauge. My thinking
is that if it were defective it could cause the light to come on when
the temperature was normal. Replacing the switch would be cheaper than
a service call.

Now the caveat...I'm just making inferences from issues I've dealt
with with other engines, I don't have a Westerbeake...do your own
research...this is just a suggestion as a starting place. There are
manuals to be found online if you no longer have yours (including our
website tech section) and trouble shooting discussions.

On Mon, Jul 9, 2012 at 5:00 PM, Chris Burti <clburti at gmail.com> wrote:
> All engines that have gauges or alarms have sensors to trigger the
> alarms or run the gauge. It is not uncommon for those to go out after
> 10 years or so. Pretty cheap to replace. It will appear as a roundish,
> quarter-diameter x 1/2" thick plug sticking out of the engine block,
> usually near the front or back with two wires the same color as on the
> light or gauge.
>
> Old school troubleshooting: Look for these two wires in the engine
> compartment in the vicinity of the block. unscrew the sender and
> coolant should dribble out...plug the hole and take to a tractor
> repair  facility or a really good auto parts store and buy a
> replacement.
>
> New school: google the engine model and engine coolant temperature
> sensor.  Then buy the part and replace without needing to plug the
> hole.
>
>
>
> On Mon, Jul 9, 2012 at 3:51 PM, Karl Mielenhausen
> <kmielen at suddenlink.net> wrote:
>> Marko,
>>
>> It would be helpful to know which engine you have.
>>
>> I suspect your impeller has broken/missing vanes.
>> Was it inspected this spring before commissioning?
>> Was it removed during winterization? (They can take on quite a "set" over
>> the winter, to the point where the vanes fracture upon start-up.)
>> If the impeller checks out, you may have a partially fouled heat exchanger.
>> Here are some Mainsheet references to a hot running engine....
>> http://www.catalina320.com/article.php?story=20100117205621921
>> http://www.catalina320.com/article.php?story=20090718083201878
>>
>> Karl Mielenhausen
>>
>>
>> On Mon, Jul 9, 2012 at 10:12 AM, Marko Jamnik <mjamnik at markocreative.net>
>> wrote:
>>>> Things just keep happening. One way of keeping me on my toes.
>>>
>>> Ventured out for a sail the other day and everything was working normal,
>> the engine started, water was circulating through the engine.
>>> Twenty minutes under power my water temp light came on as well as the
>> alarm. The gauge was a normal 80c, the coolant was full, the impeller was
>> changed two years ago with 44 hours on the new one. My intake filter is
>> clear. I ran the engine for approximate 30 minutes gauge still reading 80c
>> and then I decided time to shut it down. I let it cool down and then tried
>> it again hoping it was a temporary thing.
>>> I would appreciate any other options I may have over looked. With the
>> gauge being normal I ruled out the thermostat.
>>>
>>> Mark
>>> Lake Ontario
>>> #304
>
>
>
> --
> Chris Burti
> Farmville, NC



-- 
Chris Burti
Farmville, NC