This sounds an awful lot like a partially broken thermostat and due to it being a reltively new car it is most likely
The thermostat reroutes coolant to the radiator when the engine reaches operating temperature (heats up). And closes as it begins cooling down to keep it there, it is constantly cycling.
They are designed to fail open, IE if they wear out they stick open and always send coolant to the radiator (the alternative being catastrophic overheating). They are very simple devices, a piston filled with wax that melts as it heats up pushing it open.
Typically this means car never wont ever reach operating temp unless your really putting your foot into it, however it could cause this to if its only partially failed.
Luckily thermostats are cheap and easy to replace, thats the first thing to change. Thermostat + gasket roughly 10 dollars, labor probably around 50 bucks, I do them on integras in about 10 minutes.
Other possibilities include a clogged radiator or a leaking head gasket. You dont want a leaking head gakest.
Sunday, December 17th, 2006 AT 5:14 PM