Toyota Repair: 94 camry temperature problem -V6, head gasket, temperature problem

Question
if i park the car for the whole weekend or for a full day as soon as i start it within 30 seconds the temperature is at normal driving range.
things to note
1. there are fine bubbles in the water
2. temperature tends to overshoot in traffic
3. temperature overshoots if i drive fast
4. temperature overshoots if i start it and leave it to throtle
5. there is no thermostat in it

Could this be caused by a warp/damage head

Answer
Yes. You most likely warped the head & ble wthe head gasket by driving it while it overheats. A compression/leakdown test will confirm this. DO NOT continue to drive the engine under such a condition. Coolant will be dumping past the rings into the oil-supply. Where coolant is, oil isn't & will eventually cause the engine to sieze.

In such a case, replace the thermostat, timing belt & water pump, and pressure cap. Check the radiator for blockage. Use a later 1mz-fe replacement Toyota head gasket, as they're Multi-Layer Steel & replace all the basic gaskets during the process. Cam & crank seals, valve cover gaskets, etc.