Overheating...., Diagnose my problem? Options

[95GTCelica]

Alright 6GC People I need your help...

Today after driving for about fifteen/twenty minutes I parked and noticed that the temp gauge read above the red line and the H. Popped the hood and heard gurgeling coming from the radiator with some overflow. I let it cool down for an hour then came back and drove around the block a couple times. I noticed that the temperature goes through the roof when it starts and slowly climbs. But when i hit about 40mph it cools down to about 3/4 of the way and when i stop it goes straight back up. I had a similar problem like this before and it was a bad water pump which was replaced a few weeks ago. Today there was no coolant on the ground just the few drops that spilled from the overflow. The engine seemed to be running fine and I wouldnt have noticed anything wrong with it unless i looked at the temp gauge. So can anyone help me? Any ideas? I'm stumped.

[DEATH]

Yeah I agree with Griffy - thermostats are cheap and very easy to replace. Just replace it and the cap to be sure and move on from there. Both can easily be accomplished in an hour on the 5S-FE [Not sure what motor you have tho]. Don't pay someone to do this if you can avoid it - I see that being at least $100 bill for $20 worth of parts [IDK - Last time I bought a stock thermostat and cap they were both $5 ea - but that's been a very long time].

This post has been edited by DEATH: Aug 15, 2008 - 3:56 PM