1992 Honda Prelude idle revs

Dear ryanA, first check and make sure there is ample radiator fluid in your reservoir. The problem sounds like your idel control valve. If this is when you first start the car and then it ceases after the car is warmed up then the valve is dirty or faulty, common problem with Hondas. My suggestion is first make sure enough fuid in the resevoir and if that does not solve the problem then look on ebay for a idle control valve or you can purchase a new one in a major auto parts store or check rockauto. Com they run about $170.00 brand new Hope this helps