Mitsubishi Repair: Radiator Fan/Electrical problem, mitsubishi galant 2001, mitsubishi galant

Question
Hello, Please help

I have a mitsubishi galant 2001, automatic V6 3.0L, and It feels like my car's radiator fans don't work.  How do I test this?  The thermometer in the car also  indicates that for long distance drive it gets close to hot.  It used to stay in the middle between C and H and now it's 3/4 way up only on long distance drives.  

Also, my left blinker flashes too fast.  I already tried replacing the front bulbs and it still does it.  I checked all the lights around the car and all seem to be working.  Possible short? or shall I go ahead and try replacing the rear light as well even though it works?  The left turn bulb is also more dim then the right one even after changing it as though not enough current is flowing through it!
Thanks for your time  

Answer
Vitali,
For your fan problem, you can test that by letting the car idle in park.  Eventually, your engine will reach normal operating temperature; typically midway between the C and H as you used to see it.  At that point, your radiator fans should turn on.  If they do not, the thermosensor mounted on your radiator or the thermostat itself may be faulty.  It would be a good idea to have a coolant flush if you haven't had one within the past 2 years.  Have the coolant flushed and filled, replace the thermostat and radiator cap.  Your mechanic will be able to determine as well if your fans are working.

The fast blinking of your turn signal usually indicates the circuit is detecting a resistance reading outside its tolerance.  I would replace the any bulbs that appear dim because they may be ready to go out completely.  Hopefully that will fix your problem.
Good luck!