I replaced the water pump on a 2008 Highlander 2 weeks ago. It also was rattling and the water pump pulley was visibly loose. This one had less than 40K on the odometer.Water pump is failing. Engine sounds like a diesel. I can see the water pump wheel oscillating instead of spinning smoothly. 57,000 miles on my 08 HL.:headbang:
You only need to remove the pulley only. Not the whole assembly. The threading is opposite on the pulley. Lefty to tighty. Righty to loosey. Good luck.I guess my next question is how do you take the tensioner off? Do you remove the tensioner pulley only or the whole thing?
If the tech said a lot of antifreeze splashed on the engine block, you will be smelling it for a while until it all evaporates, and even then, the ethylene glycol will smell again when it gets wet. The engine compartment needs to be washed and cleaned to get the sticky antifreeze off.Glad I found this forum. I just had my 3rd water pump installed. Immediately after the 60,000 service, I found a puddle beneath my car. The dealership admitted fault, but still charged the warranty. After driving the vehicle home, again, I found a puddle beneath my car the next morning. The dealership said the pump must be faulty. They replaced it again and again charged the warranty. Now at 96,000, a different Toyota dealership found evidence of the water pump leaking, yet again. They replaced it last week. For a week now, I have smelled coolant when I turn on the heat. The tech did say he feels like he "got more antifreeze on the car than in the car." Am I smelling residue burning or should I be concerned about a heater core leak or something else?