The 75 and ZT Owners Club Forums - View Single Post - Couple of theories on the diesel cool running problem?

clf · 6th January 2016, 13:38

Currently I am in work, so I can't respond properly to all that everyone has said. I will do when I get home for clarity.

However I will say ,
my undertray is fitted and intact.
I don't have an FBH fitted.
I am not using my air con, just econ. heat. Both sides set to 22, if I want it warmer, I dial up the temp to maybe 25, and the temp noticeably gets warmer.
I don't use the heater often, even in this weather, but when I do the coolant temp drops by around 5 degrees. Which is to be expected.
I do have the atc set for feet and demisting when I do use it, which I can feel when it is turned off, when traveling at motorway speeds. (Ram air?)

The coolant temp rises and falls as everyone describes, so I have never concerned myself about this, just the numbers are lower via the obd, than is regarded as normal.

6th January 2016, 13:38	#10
clf This is my second home MG ZT CDTi Join Date: Jan 2014 Location: carrick Posts: 7,859 Thanks: 3,494 Thanked 2,657 Times in 1,973 Posts	Currently I am in work, so I can't respond properly to all that everyone has said. I will do when I get home for clarity. However I will say , my undertray is fitted and intact. I don't have an FBH fitted. I am not using my air con, just econ. heat. Both sides set to 22, if I want it warmer, I dial up the temp to maybe 25, and the temp noticeably gets warmer. I don't use the heater often, even in this weather, but when I do the coolant temp drops by around 5 degrees. Which is to be expected. I do have the atc set for feet and demisting when I do use it, which I can feel when it is turned off, when traveling at motorway speeds. (Ram air?) The coolant temp rises and falls as everyone describes, so I have never concerned myself about this, just the numbers are lower via the obd, than is regarded as normal. __________________ It is not gloss primer .............. it is duct tape silver!