Sounds like you are in the same situation I was in when you got it replaced the first time at 70k.

First, a mechanic cannot look at it to see if it's worn. Well, not without taking the front of your engine apart as it's inside the front of the engine. And if you're going to that length, you might as well as just replace it while the engine is torn apart! That's the reason most will get the water pump replaced at the same time - it has to come off to replace the TB. If you have to do that much work, there's no sense in putting a worn water pump back on (along with the thermostat, a couple of hoses, the tensioner and belts).

Second, I also have an '03 SE. However I only have 54k on mine and just had the TB replaced and it was long over-due. They are supposed to be replaced at 105k miles OR every 7 years. Mine was 9+ years old.

And this is something you want to maintain. If it were to snap, you stand a good chance of doing some major damage to your engine. The 3.3 is what's known as an "interference" engine. That is, the valves (what the TB controls) and the pistons occupy the same space in the cylinders. It's the TB's job to to time the valves so that they aren't in the way when the piston goes back up! If the TB snaps, all bets are off as to whether this will be guaranteed! So it's piston meets valves... NOT good!

So look at your mileage AND the age of your TB to determine if it needs replaced. That's really your only option.