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

Asked by Feb 05, 2013 at 05:33 PM about the 1998 Cadillac Catera RWD

Question type: General

4 Answers


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.

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