How to Fix MacBook Pro Overheating Issues?

1. Reset SMC. Reset SMC.
2. MacBook Hardware Test. 
3. Remove Apps using High Resources Using Activity Monitor.
4. Use Energy Saver Settings.
5. Clean MacBook Pro Fan.
6. Disable Flash. 
7. Stand for MacBook Pro. 
8. Remove Malware.

How do I fix my MacBook Pro from overheating?

7 ways to keep your MacBook from overheating

1. Avoid Chrome. Apple says that "runaway applications can cause the processor to work overtime and affect the heat level of your computer." 
2. Keep tabs to a reasonable minimum.
3. Slow your multitasking roll.
4. No laps, no sun.
5. Test your fans.
6. Clean your Mac.
7. Keep current.

How do I fix my overheating CPU?

Steps

1. Unplug your computer before opening the case.
2. Consider other options first.
3. Remove the small CPU fan plug from the motherboard.
4. Remove the CPU cooling fan.
5. Release the CPU.
6. Take care not to drop the processor or pull it off if it's stuck.
7. Clean out the heat sink.
8. Carefully wipe off any residual thermal paste.