alexgalexg
NAXJA Forum User
- Location
- Connecticut
I have been poking around in my 1998 xj with the 4.0 today. Just to make sure that all is well mechanically and it wont need any more work before ordering a lift and I noticed something about the cooling system today that I wanted to run by here. So at the front of the engine we have the thermostat housing which houses a temperature sensor. This sensor I believe measures the temp of the coolant and sends it to the computer and only the computer. If this coolant was hot I assume it would go off? At the back we have in my case a flat green wire going from the head bolt you cant take out when removing the head and bolting into the wall behind the gauge cluster. This reads temps to the gauge only right?
So if cyl 1 was running hot and you pulled the plug 10 hrs after use to see it that red and white color that it usually is when an engine is running hot it would have definitely triggered a code because that coolant sensor is so close to cyl 1 that it would have to pick up something if it was having problems with temp correct?
I am just trying to understand how this system works
So if cyl 1 was running hot and you pulled the plug 10 hrs after use to see it that red and white color that it usually is when an engine is running hot it would have definitely triggered a code because that coolant sensor is so close to cyl 1 that it would have to pick up something if it was having problems with temp correct?
I am just trying to understand how this system works