for some reason my cars water temp needle spikes to HOT when using the windows

[bman2033]

i know this sounds stupid but just like it says. i will roll up or down the automatic windows and the needle will spike up on the water temp. whats happening bad ground or electric problem. cause the needle will go up and down when driving too. when on the highway it goes up and when i declerate while in gear at high rpm the temp will go back down, but shortly after will rise a little. anyone have the same or similar problem. i installed a nismo thermostat and i have a koyo radiator and i have a elctric cooling fan for radiator. so i have no i dea ,help!

[SpeedRacer1]

Did you bleed the system good?

[bman2033]

so u might think it is a fluid bleeding proplem??? and not to be ingnorant but which fluid. im about to see if the radiator is running low on fluid and is it bad that there is no fluid in the overflow tank??

[SpeedRacer1]

If you do not bleed the coolant system properly after refiilling it air bubbles will stay in the system. If an air bubble gets stuck next to the temp sensor it will get hotter than the coolant and provide false readings.

What engine and what chassis?

[bman2033]

the engine is the s13 redtop in a 95 240sx. whats the steps to bleed the coolant system????

[SpeedRacer1]

Did you swap the coolant temp sensor when you did the swap?

[bman2033]

very good question seeing as i did not do the swap i have no idea.

[SpeedRacer1]

The S14 gauge cluster will not properly read the S13 sensor. Get the S14 sensor off your old engine or get another one and put it in.