For someone with no experience with fixing cars and less than handy by nature, it took about a day's worth of work following these instructions. My Lexus is now running like new, save me a few hundred dollars, and learned quite a bit about the inner workings of my vehicle. Thank You!
Two warnings for people like me though:
- Don't reuse the existing throttle body gasket. It took me so long cuz I had to take it apart many time as it kept on leaking coolant. Just buy a bottle of instant gasket from your local auto shop.
- Putting the throttle body back together is pretty tough without removing the little black cover on top. When putting the throttle back together make sure both flaps comes up and down together (in synch). This may be obvious for car gurus, but I kept on having trouble how they were put together after being taken apart.
