I recently traded my Ford Excursion for a 1991 fj80. I am digging my new truck and have been working out the bugs. This site has been a big help. The engine runs strong and sounds good but the idle changes at almost every start. I set the golden screw so that the lowest idle is around 600 and now sometimes it will start and Idle at around 1300. I have replaced the Fuel pressure regulator and TPS. I have checked that the ISC valve and MAF work correctly; they check out per FSM. I have checked fuel pressure and vacuum and both seem normal. It is drivable but the idle is driving me nuts. Are there any 3FE gurus out there who have heard of this problem?