code po501 speed sensor was replaced cruise control not working speedometer not working odo not working check engine light not working poor shifting missfires sometimes runs good sometimes HELP PLEESE
sounds like a poor connection somewhere , body ground, maby a crowded connector, ck. if battery under rear seats is good,if i remember correctly it is, with prone connectors
check connections at battery. hose off if corrorded and establish good connections.
ECU problems, unless absolutely impossibility trade it in.
I've seen this occur, bought a NEW ecu and the problem persisted. It was all caused by a bad ground. ECU couldn't think straight--too bad we couldn't return *NO RETURNS on electrical parts" these things don't usually go bad by themselves, y'know.
Looking for a Used Catera in your area?
CarGurus has 72 nationwide Catera listings and the tools to find you a great deal.
Search Cadillac Catera Questions
Cadillac Catera Experts