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Firoj Tadavi 7 months ago.
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GMC Acadia 2010 with 75K km rpm fluctuations for from 2000 to 1400 back and fort for 30 sec and then it stabilise at 1300 rpm for next 30 sec come down 650 rpm , change injector, ignition coil, spark plug ,ECU ,vacuum leak check with break cleaner not found any leaks, still having same problem
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