Hello I recently purchased a 2006 TC. It had a check engine light for the coolant temperature being low, so i decided to replace the thermostat. Befor replacing the thermostat the temperature would go to the middle of the temp guage then go back down. Now after replacing the thermostat the The temperature will go all the way up until right befor the red befor going back down. Sometime it sits there for a while. What is the normal range that the guage should read? for Every car i have ever owned it has been in the middle. Has anyone else had this happen after replacing their thermostat? Any help would be appreciated.

 

it could be a coolant temp sensor being faulty. my civic did the same thing when the cts was bad.

 

What temp. thermostat did you buy? The stock is about 190*, also did you put the thermostat in water and warm it up slowly to see what temp. it opened? I got the Gates Racing thermostat from ebay for around $23 shipped. Rated at 170*, opened when water reached 172*, a little below halfway when warmed up.

web http://cgi.ebay.com/ebaymotors/04-05...Q5fAccessories

 

yup might be a faulty thermostat.. also check your coolant overflow AND the radiator make sure you have enough coolant.. but to check the real water temp you would need an OBDII reader

 

Im a bit embarrased to admit what my problem was but, I simply didnt run the car for long enough with the cap off to fill the radiator properly. Since filling it up the temperature has been every stable in the middle and I havent gotten my check engine light back. Thanks everyone for your help.