Question about 2005 Hyundai Sonata

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My speedometer shoots all over the place

I changed the headers and one of my o2 sensors fried but it is now makeing my speedometer go all over the place

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Go to www.hmaservice.com and register( Vehicle by VIN). Afterward, you have access to shop manuals, service bulletins, wiring diagrams, etc. about your vehicle.Take/Tow your vehicle to an authorized Hyundai dealership and pay the diagnostic fee... they will tell you exactly what the problem is and the cost of parts/labor to fix it... at least this way you'll know what the problem is and what's required to fix it.

Posted on Oct 04, 2009

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Posted on Jan 02, 2017

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