Hey, I am new in Integra gsr. I got a temperature problem. My temperature thing never go up near by the middle. Here is the picture after i drive about 15mile.
What do you think about it. Any thing can help? Help plz. I know lower temperature will cost more gas. I dont want to waste my gas
http://postimg.org/image/6khmp9t1h/

 

your t-stat my very well be stuck open simple fix:replace takes maybe 3 mins to do but waiting for the coolant to drain can be a pita

 

Ditto the above^^^ start with a new thermostat.

You can test the one you have, but they are relatively cheap and because you have to remove it to test it, you may as well replace it. 94

 

I want to know can it decrease the co%?

 

yes.. a malfunctioning engine temp gauge may throw your air fuel mixture off and make it run a tad more fuel. which is what the C0 issue is..