One problem related to loud engine noise has been reported for the 2000 Toyota 4Runner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 Toyota 4Runner based on all problems reported for the 2000 4Runner.
I pulled onto the highway and heard a loud noise, like someone threw a wrench into my engine. All my dash lights came on, and I lost all power. I pulled over to the side of the road where my husband checked under the hood to find what appeared to be a dark liquid all over the bottom of the engine, axles, and front chunk. We were towed home, where he found a piece of the engine side bell housing lying in the skid plate. Now my car is lawn art and I'm searching for a recall. It has had the oil changed about every three months and is not mistreated. I still have about a thousand miles before my next oil change is due.