The tempature gage when I'm stopped shows that its overheating,,why is it overheating?

Make sure your cooling fans come on. If overheating at idle it is likely for the fans to have failed. While driving the air rushing through the grill cools the coolant in the radiator which is probably why it's fine while driving. You shouldn't drive the car if overheating as this will cause damage to the engine. Check fan relays, fuses and fans. If you turn the A/C on the fans should come on.

natural for engine temp to rise in Traffic - Until Themostat opens ) cooling fan sensor kicks on fan . But Antifreeze is not just a Cold weather item . Coolant is Absolutely Necessary for Hot Days . You must be full to recovery bottle setting of cold when checked prior to start up . Coolant for your make / model is Reddish - Pink colour and should have a reading of -25 thats negative 25 degrees the Lower the Better even - 50 .. Why ?? - 50 is 50 %% antifreeze / Coolant Concentrate MIX Gives Hot weather cooling Ability or very cold weather starting / winter HEAT .

I think you should start thinking it might not be the gage itself but >Problem with the wires in the circuit itself Also warm car up take a thermometer & check coolant tempature cross referance with temp gauge in the car

if the engine is not over heating then the gage is in need of replacing.

i have a grand voyager 1999 and it temputure is running on the 3quater mark on the gauge is this right....

The F2 error code is due to the temp sensor is registering a tempature over 600 degrees. So the reason why the convection fan is continously running is because the ERC thinks the oven is overheated and is trying to cool it down. It is probably a bad tempature sensor or oven relay board. You will need to test the tempature sensor with an OHM meter. They usually will read 1000-1100 OHMS at room tempature. If you get an open read or a incorrect OHM reading then I would replace the tempature sensor otherwise replace the power relay board if the temp sensor is reading correct. But try unplugging the power to the oven for over 10 minutes first and then plug it back in. This will reset the ERC and might fix the problem.

with winter being here you might want to consider having a new thermostat put in to increase the heat in side,but make sure your radiator is full when engine is cold

At around 200^ or little less195^ while driving, ac on idling in traffic will read hotter but out of red, note should change thermo stat if over heated I hope I was Helpfull

If the coolent level is good and the reservoir is full or has coolant backing up into the reservoir, then it's a stuck thermostat.

Not sure, but on most newer cars they have fuse for the gauges under the dash you may want to check to see if it's blown