What cause holden vectra 2.2lt engine to overheat?
Buying it itself caused.
Clutch slippage can cause an engine to overheat by running the engine at higher rpm's than what it is recommended for the motor. Excessive heat in the engine can cause the head gaskets to leak building up heat in the motor. There are inexpensive kits to test whether your headgasket is leaking or not.
If your car is low on coolant does it cause it to overheat when using the air conditioner What else can cause it to overheat while the air conditioning is on?
If it blows in the right place. The exhaust is getting into the water passage which will cause the car to overheat. Probably in just a few minutes. With the engine cold, take the radiator cap off, make sure it is full. start the car. If the head gasket is blown, water will shoot out the cap for a foot or two.