The 75 and ZT Owners Club Forums - View Single Post - Rover 75 Tourer 2.0 CDTi : engine not warm, blowing cold air

Bzguy · 20th January 2018, 16:36

I took the thermostat out, I managed to get quickly a new thermostat, I tested it forst in boiling water, let it cool down to see if it seals properly

The 1st one didn't;t close properly, so indeed by default always a bit open, so temp only got up to 57 degrees C.

I put the new thermostat in, let the engine idle for 30-35 minutes on the driveway (it's 4 degrees here now), and then it got up to stable 84 degrees.

I bled the full expansion tank back to max level and took it for a drive : temp between 75-83 degrees while driving, nice temperature through the vents now as well.

Temp gauge shows nicely at 9 o'clock mark now

Thanks all for the good advice !

Lesson learnt : a new thermostat does not perfectly by default

20th January 2018, 16:36	#21
Bzguy Newbie Rover 75 Saloon Join Date: Dec 2017 Location: Baal Posts: 18 Thanks: 0 Thanked 3 Times in 2 Posts	I took the thermostat out, I managed to get quickly a new thermostat, I tested it forst in boiling water, let it cool down to see if it seals properly The 1st one didn't;t close properly, so indeed by default always a bit open, so temp only got up to 57 degrees C. I put the new thermostat in, let the engine idle for 30-35 minutes on the driveway (it's 4 degrees here now), and then it got up to stable 84 degrees. I bled the full expansion tank back to max level and took it for a drive : temp between 75-83 degrees while driving, nice temperature through the vents now as well. Temp gauge shows nicely at 9 o'clock mark now Thanks all for the good advice ! Lesson learnt : a new thermostat does not perfectly by default