CDTI - low operating temperature?

Workhorse · 26th April 2020, 11:57

Hi all,

I finally got round to working out the dashboard diagnostics on my 2004 75 diesel so that I could see what was going on with the engine temperature. The temperature gauge has always looked on the low side, but I wasn't sure if that was just the gauge under-reading.

Basically, the temperature initially goes up quite rapidly, which would indicate to me that the thermostat is working as it should at least initially. However, after mixed driving the needle only goes about of a third of the way up the dial, which I now know equates to about 70 degrees, so on the low side.

I'm assuming this means I need to look at my thermostat, but I'm just a bit confused that it's initially picking up temperature fine, but it's not getting to the 90 or so degrees I'd expect to see. Is it a case that it's opening a bit too early?

Any thoughts welcomed!
Thanks all

26th April 2020, 11:57	#1
Workhorse Regular poster Rover 75 Saloon Join Date: Jan 2020 Location: West Midlands Posts: 44 Thanks: 0 Thanked 14 Times in 8 Posts	CDTI - low operating temperature? Hi all, I finally got round to working out the dashboard diagnostics on my 2004 75 diesel so that I could see what was going on with the engine temperature. The temperature gauge has always looked on the low side, but I wasn't sure if that was just the gauge under-reading. Basically, the temperature initially goes up quite rapidly, which would indicate to me that the thermostat is working as it should at least initially. However, after mixed driving the needle only goes about of a third of the way up the dial, which I now know equates to about 70 degrees, so on the low side. I'm assuming this means I need to look at my thermostat, but I'm just a bit confused that it's initially picking up temperature fine, but it's not getting to the 90 or so degrees I'd expect to see. Is it a case that it's opening a bit too early? Any thoughts welcomed! Thanks all