my old integra took forever to warm up. then one day the thermo stuck closed, got a new thermo and it warmed up much quicker. my CRX presently takes forever to warm up @ idle, but if i drive it it warms up quite quickly. (the needle won't move during the several minutes of idling it takes to get off of the USF campus when i go to work, but once i hit fowler it's fully warmed up by the time i get to nebraska).