Intermittent Problem Diagnosis
Intermittent fault testing requires duplicating circuit or component failure to identify the problem. These procedures may lead to the PCM setting a fault code, which may help in diagnosis. If fault code is not present, check for intermittents. See CIRCUIT TEST Z in appropriate article:
For Contour & Mystique 2.0L, see TESTS W/CODES - 2.0L .
For Contour & Mystique 2.5L, see TESTS W/CODES - 2.5L .
For Windstar, see TESTS W/CODES .