Re: 302 idle problems
Your problem could be the IAC(Idle Air Control) valve (or IAV as it was called), as a matter of fact my '89 Bronco had an idle problem when I bought it that was caused by the IAC. I removed it cleaned it with some carb spray, reistalled it, and that was 4 years ago with no problems since.
Now what I've seen at the shop, especially with the 5.0 is the upper intake working loose just enough to let the gasket suck in. I've seen this more than the IAC. The inake will not appeer to be loose, but take some carb spray and spray along the upper inake gasket, any change in RPM's will tell the tale.
Also could be the MAP/BARO sensor reading wrong. but seems more like a vaccume leak to me.
Ford guy with twin rockcrawling Samurai's [img]/wwwthreads_images/icons/wink.gif[/img]