First time boat owner and I am...
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06-11-2017 06:24 AM
First time boat owner and I am hoping someone out there can help! We bought a 2001 31 ft. Sundancer with 5.7 350's, the port engine had just been rebuilt, it had a little over 200 hours on it when it was rebuilt. During the survey and subsequent sea trials the port engine stalled a few times when throttled down to an idle. We hired a Merc Certified Mechanic and have since replaced the IAC, had the ECM re-flashed, installed a new MAP sensor and it is still stalling. The engine starts right up and idles great after sitting overnight; rev it up a little {2000 rpm's} and throttle it down to an idle; it spits, spurts and sputters then stalls. I've put 25 gals of fresh fuel in along with couple Merc fuel additives. Hoping someone has some ideas on what might be causing the problem. Thank you.
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06-13-2017 05:34 PM
tech do a code scan. I just replaced the IAC on mine today. I coded out but also caused the engine alarm to sound twice every minute. Because you still have a problem I am guessing the tech did not use a diagnostic tool/machine and took a guess on the IAC and the MAP. There could be a blockage in the air hoses coming and going to/from the manifold from the IAC.
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06-14-2017 08:58 AM
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06-17-2017 09:32 PM
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06-18-2017 02:27 PM
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06-29-2017 07:29 AM
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06-29-2017 07:31 AM
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06-29-2017 08:20 AM
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