Yes the proper term is Coolant Level Sensor, does nothing to sense
temperature at all.

251 919 372

Easily available from most of the Vendors on the list.

-- 
Jim Thompson
84 GL 1.9 "Gloria"
84 Westfalia 2.1 "Ole Putt"
72 411 Station Wagon "Pug"
75 914 1.8 "Nancy"
Full Timing Since March 1999
oldvolkshome@gmail.com
http://www.oldvolkshome.com
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***********************************

On Sun, Jan 8, 2012 at 7:11 PM, Larry Alofs <lalofs@gmail.com> wrote:
> If it senses the level, why call it a temperature probe.
> �And why use the term switch to describe two simple metal prongs.
>
> Larry A.
>
>
> On Sun, Jan 8, 2012 at 8:21 PM, Tom Torrella <ttorrella4@comcast.net> wrote:
>> The expansion tank. Next to the pressure cap is a coolant level switch (improperly referee as 'a probe'). See examples @ BusDepot though they don't list the switch. After I had it replaced the problem was solved.
>>
>>
>> Expansion tank:
>> http://www.busdepot.com/details.jsp?partnumber=025121403A
>>
>> Pressure cap:
>> http://www.busdepot.com/details.jsp?partnumber=025121321B
>>
>>
>>> What tank has a temp probe???
>>>
>>> Larry A.
>>>
>>>
>>> On Sun, Jan 8, 2012 at 9:02 AM, Tom Torrella <ttorrella4@comcast.net> wrote:
>>>> My 1.9 had same intermittent issue. The probe was replace solving the problem.
>>>>
>>>> Possibly two issues:
>>>> Air in reserve tank off the water pump.
>>>> Defective temp probe in same tank.
>>>> Also check condition of pressure cap - tight? �leaking?
>>>>
>>>> TomT