[Healeys] Overheating query

[Alan Seigrist]

Sorry meant to say "not hot"

On Thursday, 8 September 2016, Alan Seigrist <healey.nut at gmail.com> wrote:

> Simon -
>
> If the rad water is hot, it means the thermostat has failed in the closed
> position.  Just replace the thermostat.  There should be a tiny bypass
> hole, so you will get a teeny tiny amount of cooling, but don't drive the
> car until you replace the thermostat.
>
> Cheers,
>
> Alan
>
> On Thu, Sep 8, 2016 at 12:19 AM, Simon Lachlan <
> simon.lachlan at homecall.co.uk
> <javascript:_e(%7B%7D,'cvml','simon.lachlan at homecall.co.uk');>> wrote:
>
>> Hi,
>>
>> This isn’t the usual one ....”my car always runs hot; what’s the cure?”
>> etc
>>
>> No, this is my very own original.....
>>
>> Background:-
>>
>> 1)      The car, MkII BT7, has never had overheating issues before today.
>>
>> 2)      It has a new, 12 month, modern design radiator.
>>
>> 3)      It has the correct type(original design) Smiths sleeved
>> thermostat. (5 years old +/-).
>>
>> 4)      The waterpump was in the car when I bought the car +/- 25 yrs
>> ago.
>>
>> Today’s symptoms:-
>>
>> 1)      I took it out to the pub today and, on returning, I noticed that
>> there was HEAT and then that the gauge was off the scale.
>>
>> 2)      There was plenty of coolant in the rad and it didn’t seem overly
>> hot.
>>
>> 3)      I didn’t have much time, but I got the impression that the rad
>> was not blowing steam or making more of a “cooling-off noise” than usual.
>>
>> 4)      I also got the impression that the engine was hotter than the
>> rad.
>>
>> Is this typical of a failed water pump?
>>
>> How can one differentiate between thermostat issues and waterpump issues?
>>
>>
>>
>> Any ideas?
>>
>> Simon
>>
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>
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