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While driving 2004 Chevy HD the RPM without any warning drops to 1200. There has never been a backfire or rough idling,accelerates fine,shifts fine? I have to pull over and restart the engine several because I have lost all power. Once I restart it runs fine. I just replaced the mass air sensor, now considering my next move

  • Is this an automatic transmission car? – juhist Mar 16 '19 at 20:26

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