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My name isXXXXX own a 1999 SeaRay 21ft. Sundeck. It has

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My name isXXXXX own a...
My name isXXXXX own a 1999 SeaRay 21ft. Sundeck. It has a 5.0 Mercruiser EFI digital ignition. I am currently experiencing high idle when shifting into forward and when I put it back into neutral, the RPM's are still high. I will then shut the motor off for 10 seconds and restart the engine and everything seems to go back to normal. However, it will go back to doing the same thing after putting it back to forward gear or reverse. In addition to this a warning buzzer will go off a couple of times. At first I thought maybe it was some bad cables to the throttle control box, but I had it serviced and it was fine. Therefore, I am thinking it might be a bad sensor somewhere. Could you please help me locate this?

Thank you,
Rick
Submitted: 13 years ago.Category: Boat
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Answered in 1 minute by:
6/20/2009
Marine Mechanic: ROCKET, Marine Mechanic replied 13 years ago
ROCKET
ROCKET, Marine Mechanic
Category: Boat
Satisfied Customers: 999
Experience: I HAVE BEEN WORKING ON BOATS OVER 25 YEARS
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Welcome to JA

It sounds like the IAC valve is carboned up
if you plug it into a computer or DDT, you can reset the values
ROCKET
ROCKET, Marine Mechanic
Category: Boat
Satisfied Customers: 999
Experience: I HAVE BEEN WORKING ON BOATS OVER 25 YEARS
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ROCKET and 87 other Boat Specialists are ready to help you
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Customer reply replied 13 years ago
is it expensive to fix
Marine Mechanic: ROCKET, Marine Mechanic replied 13 years ago
No not really

if you have your serial number handy i can get you the dealers cost also
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