I've got a 90 22RE 5-speed that doesn't want to idle when warm. It will start up when cold and idle fast until it's warm; but after a 45 min run down the interstate to work, the idle drops down to less than 400 rpm when I start hitting traffic lights. I've adjusted the idle with the engine warm three times in the past week but keep ending up with the same issue.
Any thoughts?

CJ
Any thoughts?

CJ