high idle

I've got a 91 Roadmaster wagon with the 5.0l. Started the car earlier and it idle fine with a slight surge, let it run for a bit, shut it off for a couple minutes, and when I started it back it wanted to idle above 2000 Rpms. I've replaced the iacv, distributor, timed it correctly, replaced...

I pulled off the Throttle body first to clean and inspect it. Upon removal it was apparent that there was serious gum-up in the upper and lower intake manifold. Removed, cleaned and reinstalled the upper and lower intake manifold and the Throttle body. Issue persisted with no change. Replaced...

Greetings: I removed the throttle body on the 3.1 to get to the thermostat housing. Reassembled and made sure the sensor connectors were all reconnected. First time the engine idled very low, almost stalling. Removed again to check and reassembled. Now it idles very high. Before all this...