Note on Intermittents
WARNING: This page is about a different car, the 1990 Cadillac Fleetwood and 1990 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
If a Code E22 is intermittent, manipulate related wiring while observing ECM parameter P.0.1. Check TPS test point for short to ground. Cycle TPS through its travel and tap on TPS with a pencil or pocket screwdriver to test for intermittent TPS. If fault is induced, ECM data will skip to 72 degrees or greater. If wiring tests out okay, substitute known good TPS and retest.