Maybe.
Not installed properly? operating water pump in reverse direction?
Your timing belt was not properly installed. It's probably off by a tooth or two.
All serpentine belt driven water pumps on SBC engines are reverse rotation.
I replaced water pump had to remove timing belt installed water pump installed timing belt car won't start.
NOT INSTALLED PROPERLY? CARB ADJUSTMENT?
If this is a 4cylinder motor, the water pump is located in with the timing belt,and should be replaced by a qualified mechanic, this is a interference motor, if timing belt is not properly installed, motor damage will result. Bent valves, holes in pistons,etc.
A water pump belt can be replaced by removing the old one. The new water pumb belt will be installed in the same way as the old one.
The serpentine belt should be self-tightening if the appropriately sized belt is properly installed. If the correct belt fails to acheive the proper tension, then the belt tensioner should be replaced.
In this case your car will give black smoke and it wont have much power to it and you have to get the timing belt taken off and set it up to its right place then put the belt back on it. Rememer your engine will be bit loud voice wise and if the belt was not installed properly.
YES!!
It is important to have properly installed belts in a car. The diagrams for installing a belt for this car are found in the owners manual and the maintenance manual.
The water pump is run off the timing belt. did you have the belt installed by a Toyota certified technician? if not i would definitely check the water pump seals.