Intermittent Failures
WARNING: This page is about a different car, the 1994 Plymouth Sundance, 1994 Plymouth Acclaim, 1994 Dodge Spirit, 1994 Dodge Shadow, and 1994 Chrysler LeBaron. However, it is still accessible from the selected car via links, so may be relevant.
Intermittent failures may cause MIL to flicker or stay on until the intermittent fault goes away. However, the corresponding trouble code will be retained in PCM memory. If fault does not reoccur within a certain time frame (before 50 ignition on/off cycles), corresponding trouble code will be erased from PCM memory.
Intermittent failures can be caused by faulty sensor, bad connection, or wiring related problems. See INTERMITTENTS in TROUBLE SHOOTING, TESTS W/O CODES article in the ENGINE PERFORMANCE Section.