Engine temp.

s5joe

s5joe

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For the past few days when I have been getting in my car of a morning or from 8 hours work shif my engine temp is reading like in the picture below is this normal or do I have a fault. I have been suffering from heavy fuel consumption too IMG 3547
 
If the temp doesn’t come up to around 90° after a short while then it does sound like a faulty thermostat. Likely stuck open.

Fuel use would be higher as the engine thinks it’s cold so is pushing a more fuel rich mixture into the engine.

I’m not sure what model/engine or age of car you have but one other thing to check is your coolant system including water pump as these are common failure points
 
Buck said:
If the temp doesn’t come up to around 90° after a short while then it does sound like a faulty thermostat. Likely stuck open.

Fuel use would be higher as the engine thinks it’s cold so is pushing a more fuel rich mixture into the engine.

I’m not sure what model/engine or age of car you have but one other thing to check is your coolant system including water pump as these are common failure points
Click to expand...
I have got a 2018 s5 3.0t. On my picture it shows my engine temp with one bar so about 50c and this happens as soon as I start the car so it won’t get to that temp within a second.
 
s3joe said:
I have got a 2018 s5 3.0t. On my picture it shows my engine temp with one bar so about 50c and this happens as soon as I start the car so it won’t get to that temp within a second.
Click to expand...
My S5 has done this since I bought it, it’s perfectly normal.

I’ve also had the thermostat replaced twice and that had no effect on it so it’s not related to a thermostat error.
 
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It only starts to read when the oil temperature is around 45 degrees c.
 
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