9-5 re starting issue solved - Saab 9-5 Bulletin Board - Saabnet.com
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9-5 re starting issue solved
Posted by dnades [Email] (more from dnades) on Fri, 14 Aug 2015 12:53:29
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I had purchased a 2009 9-5 aero wagon with 99K on it last year and it always had an issue re starting in hot weather. Once the car cooled down it would restart no problem. I had replaced the DIC and CPS as well as a few other things but as soon as the hot weather hit it kept happening. Not all the time of course. Mechanic was pretty sure it was the ignition switch but it turned out to be a short in a wire leading to the relay for the fuel pump. As the car heated up the wires would pull away from each other (mechanic said he was surprised the pump just didn't quit while driving but theorized there was enough voltage running through the wires) and the pump wouldn't get the signal to pump fuel to the engine. As the car cooled down the wires would reconnect and voila, you could start the car. No issues since.
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