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fuel gauge not working on my 2004 kia optamia. replaced fuel pump didn't help. on 2004 Kia Optima

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replaced fuel pump and filter and checked fuses. gauge still does not work at all.
(1) Answer
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You will need to trace wiring and check fuses. Kia as a car manufacturer put a lot of great technical information and work shop manuals on line for free for Kia owners. www.kiatechinfo.com
There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online