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Discussion Starter #1
807 2.0hdi 07
Coolant temperature has never been above 74°C. I was under the impression 85-90 is normal
Webasto is running all the time, when ambient outside temperature is below 10, even after a 3 hour motorway trip.
I'm assuming the above observations are linked.
According to the FAP app, engine fan comes on
Where do I start?
Is it a thermostat issue, electronic control, or something else?
Thanks in advance
 

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74 degrees is fine your webasto has a fault though it should turn off at about 15 degrees i think cant remember but it should be off within 10 mins of starting no wonder your using more fuel !
 

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My 2006 2.0tdi auto runs usually between 78-80oC motorway and normal driving, whether 30oC or 0oC ambients. It runs hotter around town, and cooler on a motorway run. 90+ is seen on stop/starting in traffic.
Not sure if any help to you, but thought I'll reply.
 

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Discussion Starter #4
Thanks for the response...
New Thermostat fitted, now runs at 80ish degrees and the webasto turns itself off as it should 🤗
 
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