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International Automotive Technicians Network
Re: 1990 Cadillac Deville hard code E 49
Posted to Technical Discussion Forum on 8/23/2001

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If it has shorted injectors, it will also cause the code to set. I believe it used O2 signal for monitoring. Don't forget a lazy 02. Make sure you have tested it properly. Shorted injectors, and lazy ... Login to read more.