- Feb 4, 2007
- 7,251
- Boat Info
- 1996 450DA, TNT, Caribe dink w/15hp OB.
- Engines
- 3126 427HP TD transmissions
It was the "fuzzy brown thing" that gave it away. It's supposed to be white. hahaha.
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Welcome to the board, I am not sure about the non merc equivalent but if you don't mind waiting for shipping you can try this site
http://www.mercurypartsexpress.com/us/
I just picked one up for $109 i believe.
Boats.net:
803149 Mercury VALVE-IAC Price: $72.24
It was the "fuzzy brown thing" that gave it away. It's supposed to be white. hahaha.
Well this is pretty interesting. I've seen lots of posts about IAC's but was not sure if it stood for the Idle Air Controller valve or not in the boating world. I have worked with them on many cars and know the symptoms of a bad one. I think i only had to replace one once, but the other times i was able to clean it up and it worked fine after that.
Are all of you guys replacing it sure that it is seized up and cleaning wouldn't have worked?
Earlier this spring I was having issues keeping my engine running at idle. Giving it gas it ran fine. Since it was my first winter with a boat and winterizing with Stabil, I wasn't sure if it was bad gas or not causing that. After reading this and other threads I am pretty sure that mine was acting up. It did it a couple days and then was fine for a few weeks, then another day at idle once. Never killed the engine though.
How many hours are on the boat? I wonder if its in that magic 200 mark?!?!
$48 later, I've got an automotive IAC and a boat that runs like a champ! Couldn't tell you what kind of car it comes from, but I think it's a Ford. Beats the heck out of the $125 that the boat dealer wanted for the same part.
Auto part on the left, Mercruiser part on the right.
The openings are different, but the base is the same, which is all that matters. All the valve does is open and close so that air can pass through.
Regarding the ignition proof comments, how exactly would the Merc part be ignition proof while the other isn't?
the bases aren't the same. In the new part, it's got cutouts that overlap the openings on the old part.