Note On Intermittents
WARNING: This page is about a different car, the 1990 Cadillac Seville and 1990 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.
Display ECM parameter ED01, manipulate TPS wiring and connectors, and see if TPS jumps or skips. Enter ECM input EI72, observe throttle switch status light and check for binding throttle linkage or weak throttle return spring. Verify minimum air rate RPM, ISC and TPS are set to specifications.