an infrared thermometer would help here.
Measure temps at heads, big steel coolant pipe at driver side of engine etc.
The cut in temps for the fan switch are in the Bentley manual.

re: "other problems"

Was (are?) there different temp thermo switches available? Pretty
unlikely someone installed the wrong switch though. (e.g. got if from
a FLAPS)

I'm sure our vendors carry the correctly rated switch.

Neil.

On 11/11/16, Dan N <dn92610@gmail.com> wrote:

> .... If the fan is coming ON late or not at all then the fan switch is
> either defective or there's too much deposit on it... baring other problems
> such as broken connection, bad ground etc etc of course...
>

--
Neil n

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