I have a 97 civic ex and when i first got the car the indicator was red and the temp gauge on the dash was bad and when the guy replaced it i noticted the indicator was now green. Its been about 6 months since i had the car and i've taken car of it and change the oil avery 3000 miles and crap like that. Now the indicator in yellow and i was wondering what does that mean and how do u get it to go back to green? Any suggestions would be helpful.