contevo

Hello, i have civic 2006 ex coupe bought back in march of this year with only 118k miles. First thing i did when i got the car was flush the coolcant and replace the thermostat, use honda coolant and thermostat which previous owners use honda stuff. Now recently i started doing some ubereat delivery. I make quick stop and leave the car running and when i come back temperature gauge goes up past the key looking symbol here is a pic


goes little higher but never to the h and i turn on my ac goes back to below the key looking thing which mean normal temperature. I do hear the fan come on and off(ac off) but doesnt stay on long enough...also when the fan comes on the gauge goes up which is weird!? And when i drive off goes back to normal.

So what can it be???

mikey1

if thats as high as it gets i wouldn't worry about it

contevo

Like u see in the pic that me idling no ac on and normal fan comes on for few second the the bars goes up 3 more and fan comes on and off like normally. Either i drive off or turn on the ac that went goes back normal.

ezone

Check the fluid level in the radiator, it needs to be completely full.

Display showing center of the gauge is perfect.
Yes it will go up and down a little bit depending on conditions.
There might be 30 degrees difference between the coolant temperature driving down the road, vs. the temp where the radiator fans turn on....

Got a scanner that can display real engine temperature as seen by the computer? Plug it in and watch temperatures. Bonus points if you get a scanner that can display both ECT1 and ECT2.