Ok here it goes, my husbands truck has been surging for months now, it wont pass smog because of it. He has changed every sensor , throttle body sensor, air flow sensor, swirl valve sensor??? i think every one under the hood. Has any one else had this problem what else could he try? Its a 1997 nissan pickup 2 wheel drive 5 speed 4 cyl. Any thing is better than what we have right now...
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