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Message: <blockquote data-quote="97ponygt" data-source="post: 1115143" data-attributes="member: 10959">Well had to put my Mustang in storage for a year and a half and wasn't able to drive her around, extenuating circumstances didn't allow for it. So I took her out of storage and now she pulls three new codes. I've sprayed carb spray on all my vacuum hoses twice and didn't notice anything. And once at a stop light it died when putting the defrost on. Those three codes and possible fixes I'm come up with are:P0300 - Random Misfire Detected<ul> <li data-xf-list-type="ul">Spark Plugs</li> <li data-xf-list-type="ul">Spark Plug Wires</li> <li data-xf-list-type="ul">Ignition Coil Pack</li> <li data-xf-list-type="ul">Fuel Filter</li> </ul>P1151 - Lack of HO2S-21 Switch, Sensor Indicates LeanThis is the drivers side upstream O2 correct? Possibly dirty fuel injectors or filter?P0151 - Oxygen 02 Sensor Circuit Low Voltage (Bank 2, Sensor 1)Replace O2 drivers side 02 sensor. Probably going to switch them and see if the code follows. and the one I've always had is P1443. Any help is greatly appreciated guys. She's a 4.6L 2V with Auto transmission. And she hasn't gotten much worse gas mileage then normal so not sure where to start next. If I'm going to have to start throwing parts at her, what should I start with? I figured I should do plugs, plug wires and a fuel filter anyway since it's about time those things were replaced anyway.</blockquote>