If the car has 240k miles how many times should the timing belt have been changed
The recommended scheduled maintenance interval for the 5VZ-FE is 90,000. Prior to 98 you may still see 60,000 mi. From my understanding, that interval is a carry over from the 3VZ. Recommended time would be every eight years regardless of mileage. The belts will deteriorate over time but the most likely cause of a belt failure is normally the tensioner, waterpump, upper pulley, or idler pulley failing.
Personally I would NEVER cheat or shortcut my engine! I implore you to please take the time to do it correctly the first time with the correct parts and tools. I highly recommend replacing the following regardless of whether or not you "think" they''ll be ok:
- Waterpump
- Thermostat
- Hoses
- Timing Belt
- Idler
- Upper Pulley
- Tensioner
- Cam Seals
- Crank Seal
- Crank Bolt
- New Belts
Once done you can sleep pretty darn good knowing you did it correctly the first time.
Google this sight and READ, READ, READ....
And yes, you'll see a ton of threads about New Crank Bolt v. Old Crank Bolt, OEM v. Aftermarket, etc...etc......... When in doubt, change it out and stick to the FSM. You won't go wrong.