# honda thermostat? **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [September 14, 2007, 2:14pm UTC](https://forums.speedlife.net/t/honda-thermostat/35377 "2007-09-14T14:14:23Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![jdmEK9gsr](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jdmek9gsr/32/4995_2.png) [@jdmEK9gsr](https://forums.speedlife.net/u/jdmEK9gsr)\ **Post date:** [September 14, 2007, 2:14pm UTC](https://forums.speedlife.net/t/honda-thermostat/35377/1 "2007-09-14T14:14:23Z")
so call me stupid but i know nothing about these. my car has been running on pretty high engine temps lately. i thought the fan might not be turning on but it is working fine. coolant levels are good. the only other thing i know of is if the thermostat wasn’t opening. how can i check to see if it is? just while the car is idling or what? ---
**Author:** ![layzie](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/layzie/32/7599_2.png) [@layzie](https://forums.speedlife.net/u/layzie)\ **Post date:** [September 14, 2007, 2:18pm UTC](https://forums.speedlife.net/t/honda-thermostat/35377/2 "2007-09-14T14:18:24Z")
the best way to check if your thermostat is opening is to touch the lower radiator hose when the car is at normal operating temps. If it is cold or a noticeable difference from the top hose then your thermostat isnt opening. ---
**Author:** ![91CRXSI](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/91crxsi/32/7247_2.png) [@91CRXSI](https://forums.speedlife.net/u/91CRXSI)\ **Post date:** [September 14, 2007, 2:20pm UTC](https://forums.speedlife.net/t/honda-thermostat/35377/3 "2007-09-14T14:20:33Z")
thats about the only way of testing it without taking it out of your car. If you take the thermostat out and throw it in a pot of boiling water is will open if it works and do nothing if it doesnt ---
**Author:** ![jdmEK9gsr](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jdmek9gsr/32/4995_2.png) [@jdmEK9gsr](https://forums.speedlife.net/u/jdmEK9gsr)\ **Post date:** [September 14, 2007, 2:25pm UTC](https://forums.speedlife.net/t/honda-thermostat/35377/4 "2007-09-14T14:25:38Z")
k thanks guys. ---
**Author:** ![I\_Have\_an\_STD](https://avatars.discourse-cdn.com/v4/letter/i/50afbb/32.png) [@I\_Have\_an\_STD](https://forums.speedlife.net/u/I_Have_an_STD)\ **Post date:** [September 15, 2007, 8:26am UTC](https://forums.speedlife.net/t/honda-thermostat/35377/5 "2007-09-15T08:26:46Z")
just replace it. dont test it, dont diagnose, just replace. if you dont remember it being replaced, then its time to do it. its a $10 part and it will give you piece of mind.