Thread: preheat light
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Old 05-29-2002, 03:50 PM
gnolo gnolo is offline
Registered User
Join Date: May 2002
Location: France (Brittany)
Posts: 95
preheat light

Just a question ...

I have read on the technical book for the diesel W123s that when the engine is already hot (above 70C or 160F or something like that) the preheat light on the dashboard should not be lighted and you can start the engine directly, without preheating.

But on my 240D, the preheat light is always on, even when the engine temperature is about 90C (or 195F). And if I remember well, I believe that when my 240D was youger, the preheat light didn't light above 70C.

So, how can I fix that ? Do I have a sensor problem anywhere?
in France : 240D 1981 380 000 km
240D 1984 252 000 km
300D 1978 325 000 km
in the US : Ford Tempo 1993 70K
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