Knot 4 Me

Does anyone have a pic of a 496 MAG or MAG HO showing where the IAC mounts on the back of the manifold? The motor in my boat is set back under the swim platform quite a bit and I cannot get my head back there to see it. I will have to replace it by "feel" so a pic will help me greatly in knowing where to feel and what I am feeling. Thanks!

Sydwayz

iTrader: (1)

Look up the motor at www.bammarine.com and you should be able to find the schematic showing how it's all put together.

Knot 4 Me

The schematic on mercruiserparts.com does not show where it mounts. I can follow the air bleed tube to behind the intake manifold but then my hand gets lost in a jungle of wires, cables, etc. I need to see a pic of that mess back there to know where to feel for the IAC valve.

vindicator101

School me, I thought the IAC was on the throttle body and the MAP and MAT were on the back of the manifold? I can take a pic if I'm sure what you need........

vindicator101

Is this what your looking for?

boatnt

iTrader: (1)

that would be the air temp sensor....

the IAC is on the throttle body

Expensive Date

That sure looks like an I.A.C below that sensor.

baja25sst

Look at this link-item 38...looks to me just like the part in the back of the motor just like the photos! I had mine replaced last year and this is the same part they handed me back that went bad. The picture is confusing but I think that the line from the throttle body goes around the motor and to the IAC?

http://www.marineengine.com/parts/me...=THROTTLE+BODY

low_psi

I have circled the IAC valve (in red) in the picture from above. I have also included a pic of a new IAC Valve.

Knot 4 Me

Yes! Pic 2 and 3 shows the IAC valve. Thanks!