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Volvo IAC

JLEE

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Trying to find a IAC around here for a Volvo 8.1 gxi.
 

Heylam

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Doesn't happen to be the same IAC used on a Mercury 496HO is it (doubtful, but never know)?
 

JLEE

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I'm not sure if they're the same. IMG_8606.jpg
 

jimmyb

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On my Volvo DPX600, the gm pn is 17113099. Hope this helps
 

JLEE

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We've tried cleaning the IAC but still have a high idle. If you see a chaparral not quite wakeless through the channel that's us. It idles uncontrollably from 1000-1400
 

AzGeo

Fair winds and following seas George.. Rest Easy..
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Remove and clean the flame arrester . Then look inside the throttle body at '12 o'clock', for a small FOAM filter piece .

Remove it with needle nosed pliers, clean with 'carb cleaner spray' . Stuff back into the square hole when clean .

Place boat in water, or hook up a water line to the drive .

Start, and allow the motor to IDLE for 15 minutes, placing shift into gear, both forward and reverse multiple times in that 15 minutes . (650 in and out of gear)

If the IAC is good, the motor will idle correctly after the 15 minutes, if not, it's a GM part .

Does the motor run correctly above idle speeds ? This may be a fuel pump problem and not an IAC problem .

Not looking for trouble, just asking ..........

Is that photo, before or after cleaning the IAC ? Because the screws still have not been 'paint chipped' in that pic .
 

AzGeo

Fair winds and following seas George.. Rest Easy..
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Doesn't happen to be the same IAC used on a Mercury 496HO is it (doubtful, but never know)?

That Mercruiser IAC is actually a Ford part .......... (square with base plate and remote with hoses)

Just clean it, and then BANG IT ON THE WORKBENCH really hard, per Bruce King .
 

Trash

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Check for a simple vacuum leak. Could be a simple line disconnect or cracked hose etc. That will cause your symptoms as well.
 

Outdrive1

Outdrive1 Marine Sales https://www.outdrive1.com/
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Those fuel pumps are known to fail on those motors.
 
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