How do you fix a window that will not go up or down in a 1990 Nissan 240sx?
Replace the window regulator
What is wrong with a 1990 Nissan 240sx when you are driving and your temp gauge is going up and down when you get on the gas?
How do you fix a window that will not go up or down in a 1990 Nissan 240sx Every now and again it will work but 90 of time it doesn't. Is it the relay switch or the motor?
What is wrong with a 1990 Nissan Maxima if the rear window on the driver's side rolls down all by itself?
If by " rolls down all by itself" you mean that it slowly slides down while traveling in the car, then my advice would be to take the door panel off and check to see if the window came off the the lower clips. If every thing looks sound and or the window is electronicly rolling itself down I don't know what to tell you.
Why will the clutch not pump but will stay all the way up or down in a 1990 Nissan 240SX with manual transmission added clutch fluid?
The thermostat is located on the RH side (passenger side) of the engine, toward the front. A radiator hose goes into a housing. Looking down from the top, there are (normally) two sensors going into the housing. The thermostat is below these and the cover is held onto the block with three bolts. If you replace it, go with an original Nissan brand. It's worth any extra cost.