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Bad IAC Valve
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Author:  jtupman [ Mon May 23, 2011 4:19 pm ]
Post subject:  Bad IAC Valve

Had issues with my engine setting off a double beep about every 2 min. and would not idle. It would run with "throttle only" but not in gear. Did some research and found that it is more than likely the IAC. I swapped it out and the engine is firing right up and idling fine; however, i am still getting the double beeps. My question is, is there a way to reset the code without having to take it to the shop to put it on a computer?

2005 Mercruiser 5.0L MPI I/O

Author:  Thalasso [ Mon May 23, 2011 5:42 pm ]
Post subject:  Re: Bad IAC Valve

Try disconnecting the ground side of the battery for a minute or two.

Author:  jtupman [ Wed May 25, 2011 12:02 pm ]
Post subject:  Re: Bad IAC Valve

*Update* Looks like I had two separate problems. One was the IAC for the motor not idling and the other was the water pressure sensor. Once I replaced the water pressure sensor the double beeps went away. Took it to the shop and put the computer on it and everything cleared with no other faults noted. 4 day weekend here I come!

Total cost after taxes: $235
$56 for the IAC
$115 for the water pressure sensor
$57 for the engine diagnostic (half hr. of labor)

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