I own a 1994 Toyota pickup 3.0L V6 4WD 5-Speed manual. My problem is that my truck idls a little rough at 500 rpm. When I start it cold it's perfectly fine but when the motor is warm it goes down to 500rpm but not all the time. There are times where it's normal and other times it sits at 500 rpms. The check engine light hasn't come on or ever came on. Also when I'm in 1st or second gear, it likes to stutter and sounds like it wants to stall bit giving it gas solves that issue. I would please like to know what's wrong with my truck. Please help!

 

Set idle speed? No. 16 of basic maintenance. http://web.archive.org/web/201210210...nce/2maint.pdf

 

Closely inspect the air intake tube for cracks or looseness. Common problem on these trucks. The rubber in it is getting brittle and cracking.