Re: 96 ranger idleing problem
Make SURE you didn't overtorque the intake gaskets, especially the lower one. The lower gasket is paper and the other one has a metal layer making it stronger. I had the same problem and came to find out I overtorqued and split the lower gasket. The created a huge vacuum leak, and of course it idled like crap. I think the lower gasket torque is 28-30 ft/lbs, I'd stay on the low end. You don't have to completely remove the lower intake to change the gasket, just pull the bolts and you should have the room you need. It could the pcv, might as well pull that to check while you have the upper intake off and you have good access. Check your plugs too while you're in there, they can tell you alot. Good luck.
1997 Ford Ranger XLT short bed regular cab
5 speed manual