Quote Originally Posted by Super-DA9 View Post
do not rev it up to vtec when it's running cold, chantelle. it isn't good for your engine. infact I didn't think vtec engaged if it wasn't at running temp.

in terms of warming up time i've noticed integras take a while to warm up compared to other normal cars but it shouldn't be cooling while driving, it should take about 5-10 minutes to reach running temp at idle (in medium weather) and should stay there.

thermostat most likely needs changing as it has been stated, change the gasket for another OEM one too.

good luck
Wow, all this time i thought it was normal....have had the car about 6 years lol and its always done that...does take around 10 mins or so to reach running temp...does drop at night though, specially in the cold! thanks