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Q: throttle position sensor on 2007 Hyundai Sonata

randomlly loss of power in limp mode how doyou change throttle position sensor
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Do you have a code for that? Because if not, it could be many other things, like misfire, mass air flow sensor, crank sensor etc. Really best to get a diagnosis. If you have a TPS code then here is a replacement article, by the way, use a factory part to avoid even more headaches.

https://repairpal.com/estimator/throttle-position-sensor-replacement-cost
If you have the right OBD-II codes, go to a dealer. They need to reset the ECM using a GDS/VCI (which is not consumer friendly). You can replace the part yourself, but the 2007 Sonata's had a special set up which goes beyond a PCM program.
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