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Power Fade? 3.4 DOHC


chadz34

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Hey guys, my Lumina has been trouble free for a while now, but there is a problem that bothers me. Under light acceleration it feels boggy at fisrt, but then carries on like normal....Also, under wide open throttle sometimes the power (usually above 120km/h) fades it isnt a cut out or a miss fire, but you can hear the engine get less loud. Also, there are no vacuum leaks or LIM leaks....but it still sometimes wont idle steady. There is no check engine light either. Any help will be appreciated most parts are new so please dont start listing off random shit confusing me haha.

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