Problems with temperature and Mac fan
Have you tried resetting your SMC (System Management Controller)? 
I had a similar problem with an old MacBook Pro 15" that I solved with this:

You might check this link where Apple support indicates what you need to check before resetting your SMC.

Steps are:

Reset the SMC on Mac notebook computers

If the battery is nonremovable:


Shut down your Mac.
Unplug the MagSafe or USB-C power adapter from your computer.
Using the built-in keyboard, press Shift-Control-Option on the left side of the keyboard, then press the power button at the same time. Hold these keys and the power button for 10 seconds.
If you have a 2016 MacBook Pro with Touch ID, the Touch ID button is also the power button.
Release all keys.
Reconnect the power adapter.
Press the power button again to turn on your Mac.


Reset the SMC on Mac desktop computers

Follow these steps for iMac, Mac mini, Mac Pro, and Xserve.


Shut down your Mac.
Unplug the power cord.
Wait 15 seconds.
Plug the power cord back in.
Wait five seconds, then press the power button to turn on your Mac.


Then I would recommend using tools like SMC Fan Control or iStat Menus to control your fans and check memory and power usage.

Sorry if I don't answer your question in Spanish (I'm Latin American), but I think that we can't write answers in anything but English.