Hi All,
Facelift Freelander, TD4, 2004.
After a few months of trying to find the reasons for poor performance and blue smoke etc, I decided to buy a OBD2 dongle and downloaded Torque Pro to my phone.
Looking through the forums to see what I should expect in readings everything seemed within limits except for coolant temperature which would not go above 60 deg c.
Knowing what a pain the original thermostat can be to change I fitted an 88 deg c inline stat in the top hose and took it for a quick drive last night. To say the difference in the feel of the engine was amazing is an understatement. Up to temp in 3 miles, 88 deg on the OBD reading and car temp gauge sitting in the middle of the range.
Buoyed with excitement that I had resolved the problems I took it for a longer drive this morning. All well when it got to 88 deg on the phone reading but kept on rising and at one point reached 105 deg. Fluctuating between 98 and 104 depending on what sort of driving I was doing, mostly flat, but speeds up to 55 took it higher and sitting in traffic below 100 again.
I did stop and check there were no leaks and there was coolant in the tank.
When I stopped the engine fan was running, never heard it start up before!
Question is, do I need to worry about 105 deg and what should I expect it to sit at normally? During all this the temp gauge in the car sat in the middle and showed no sign of overheating.
Sorry for long post but wanted to give all the information, by the way it has the modified PCV and a new coolant temp sender.