I'm a new member to this forum, and a relatively new Toyota owner. I bought my 98 4runner SR5 in September of 2003 and absolutely love it thus far. Since I bought it, there's been a humming sound that occurs when driving... which makes my truck sound like a UFO. Basically, it sounds like mud tires do, but my a/t's are definitely not making that sound. I was told that it may be caused by my universals. Like I said, I'm very new to Toyotas, and even more new to 4x4's in general. I come from a very different breed of vehicles, but am looking forward to this project. Thanks for any info,

Steve

 

There's a big group of Yotatech users in your area, Im sure they'll chime in to help with your needs. As for the noise, try lubricating the drive shaft universals, check or replace the diff fluids. Use the search engine here on this board, there is a wealth of information on any subject you need an answer to.

 

I second the diff fluids suggestion.
Bob's got a good write up article on this site. You can also find it at

http://www.4runners.org

 

Thanks, the first thing I did when I bought the truck was change the diff fluid. I'll make sure to try the search engine too.

 

It might be from the charcoal canisiter.
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