High idle

Car listed above is a DE model.
Recently pulled the instrument cluster to inspect fuel gauge and for burnt out instrument lights.
Unable to see the odometer anymore.
Undid the positive battery cable.
Upon completion and hooking things back up, the car now starts and idles at 2,500 RPMs.
It was fine before undoing the battery and checking the instrument cluster.
No vacuum leaks that I can find.
Fairly new throttle position sensor, and idle air control valve.
There was a tiny vacuum leak in the hose for the fuel pressure regulator to the intake manifold, snipping that off and pulled vacuum on the hose with hand pump vacuum tester shows okay, and replace hose.
Any ideas?