One problem related to crankcase (pcv) has been reported for the 2000 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 Toyota Sienna based on all problems reported for the 2000 Sienna.
2001 Toyota Sienna had sludge problem. Toyota fixed but still calls this an owner issue!?? have seen complaints that these engines have still failed a couple thousand miles after fix. Toyota originally insisted people buy new engines but only cleans them now. What about their modifying this engine starting in July 2001? no problems with those engines. This v6 is in 9 models over 6 years and somehow it's the owners? they replaced my valve covers stating the pcv system is inetgrated into the valve covers. They get clogged and can't be cleaned. Will it take an engine seizing up due to engine failure at highway speeds, and a fatality to get Toyota's attention on this? I never received their "letter" of notification. I had owned it brand new off the lot. I can't afford to keep a ticking financial time bomb in my garage.