2013 DF115A Stalling When Engaging/Disengaging Gear

[spellronhd]

Hello all. New here to the forums. I just recently purchased a 2013 Suzuki DF115A engine and put it on my Trophy 1903. I started having a problem with it around the 8 hour mark. What happens is that when I put it in gear or take it out of gear, the engine will stall and I will hear 3 beeps. The beeps indicate that the engine key is on but the motor is not running. I don't know what is causing this and my dealer is scratching his head as well. It happens more frequently when taking out of gear or putting into reverse. If I give it gas right away once going into gear I can prevent it, but not when taking it out of gear. This has been a frustrating problem and has resulted in some close calls and a few collisions with my ramp and dock. Does anyone know what this might be?

[artdf175]

is the motor throwing an error code?
ask the dealer run the engine computer diagnostics

[spellronhd]

is the motor throwing an error code?
ask the dealer run the engine computer diagnostics

Yes he ran the diagnostics. There is no code and even the stalling is not showing up in the computer reading.

[artdf175]

I have a DF175.. I am having some oil issues
but lately.. it quits on me when first putting it into the water

does your do this all the time.. or just when cold?
My manual is recommending to warm it up for 5 minutes..
after mine gets warm.. I have not had any further problems

art..

[artdf175]

I was going through my manual read section on IAC valve
Only guess is it could be acting up and not throwing a code
Book talks about 'dash pot effect ' which is pretty much what you are describing
Along with this is checking idle speed after 20 hours which involves the IAC valve

[spellronhd]

I have a DF175.. I am having some oil issues
but lately.. it quits on me when first putting it into the water

does your do this all the time.. or just when cold?
My manual is recommending to warm it up for 5 minutes..
after mine gets warm.. I have not had any further problems

art..

It will do it whether it is cold or warm.

[spellronhd]

I was going through my manual read section on IAC valve
Only guess is it could be acting up and not throwing a code
Book talks about 'dash pot effect ' which is pretty much what you are describing
Along with this is checking idle speed after 20 hours which involves the IAC valve

Thank you. I will let my dealer know about this to see if its a possible solution. I just dropped it back with him, so let's see.

[spellronhd]

Ok, the initial problem turned out to be a bad neutral switch in the controls. now I can shift gears in and out without a stall.

Secondary issue: If I am cruising with the boat and need to stop abruptly and pull the controls from 3/4 throttle to neutral abruptly, the engine will stall. Is this normal?

[artdf175]

should not stall under any circumstance
is there any error codes appearing now that the switch has been fixed?
from the manual --still sounds like a faulty IAC valve
here is what the book says:

IDLE AIR CONTROL SYSTEM
OUTLINE
The ECM controls the duty cycle signal of the IAC valve to regulate a portion of the intake air flow to the intake
manifold.
This system is used for the following purposes :
• To keep idling / trolling at specified speed.
• To improve driveability when decelerating.
(Dash-pot effect)
• To improve engine starting and warm-up performance.
(Fast-idle function)
The sensors / switch shown below monitor current engine condition and send signals to the ECM. Based on
these signals, the ECM determines the optimum duty cycle (repeating “ON” time rate within a cycle).
A repeating ON / OFF signal at a specified rate (250 times a second) is then sent to the IAC valve.

[kmoose]

I agree on the IAC being the problem. I had a bad one and went through 3 dealers before someone knew what they were doing.

[redlowrey]

Don't blame the iac valve until you have checked the adjustment on the closed throttle switch, it's job is when the throttle is pulled back quick the ecu will tell the iac to bypass more air and keep the advance up on the timing to stabilise engine idle. Sounds like the clowns don't know the difference between the neutral switch and the closed throttle switch.

[Antares580]

Recall

There is an recall on ECM regarding this fault. (Engine stops when throtling down to idle)