1992 240...changed valve cover gasket and now running super hot???

[TwinTurboFred]

Why would this cause my car to run super hot after a few minutes? I also changed plugs, wires, and and oil change at the same time if that gives you any clues. I used liquid gasket sealer on the rubber gasket just like the manual says...everything seams to be solid and not leak...car runs great....but overheats quickly?!? There is also a new radiator that has been instaleld for a few months now and is still full and looks good. There was absolutely NO problem overheating before the valve cover gasket install, so I beleive that is where the problem lies. Thanks!

[TwinTurboFred]

Well...new info. Two days ago I had the a/c converted and charged...it blew cold and strong with no problems...but now when the car overheats I can turn off the air and it goes back down to normal??? So I am now leaning towards ac issue...but why did it run fine for two days and then go bad right after I changed the valve cover gasket? Coincidence? Belt issue? Compressor ? They tested and found no leaks when they charged it. Help!

[InsanityInc]

Has it been hotter outside the last couple of days?Could be as simple as that. Hot weather and AC is pretty hard on your cooling system.

[574-240sx]

Is you secondary a/c fan coming on when you kick the a/c on. Also is your clutch fan locking up like it should.

[TwinTurboFred]

Ok so now I have also changed the thermostat and bled the system...still overheating!!!! The fan seems to be working fine..what is the secondary ac fan? I have tried driving with and without the air on now and it overheats either way.

[rogoman]

Why would this cause my car to run super hot after a few minutes? I also changed plugs, wires, and and oil change at the same time if that gives you any clues. I used liquid gasket sealer on the rubber gasket just like the manual says...everything seams to be solid and not leak...car runs great....but overheats quickly?!? !

Did you check the dash gauge temperature sensor and it's harness connector?

[TwinTurboFred]

How do you check that? What am I looking for?