90HP, Merc's 2006, EFI-stalling in low speed

[Seaduced]

Morning!

Okay, I have 3 of the motors above. One runs PERFECT!

The other 2 will stall when you slow down after being on a run.

You can slow down fast or slow and it stalls.

Seams to stall more after the motor is warm.

I have done the following:

Used good gas.... no ethanol
changed plugs
Changed oil and filters
check temps
Used "Dry Gas" in case there is H2O in the tank


Ant thoughts on what to look at next?

Thanks from Sunny Florida!

 

[sdsaw]

Re: 90HP, Merc's 2006, EFI-stalling in low speed

Good morning back to you!

Not sure if this will help you but I have a 2001 EFI 115 Merc (Yamaha powerhead) and over the years, periodically have to clean my IAC (idle air control valve) to clear what you are describing.
I have a picture of mine if you need it.

Unsure if Mercury was still using the Yamaha powerheads in 2006.

Scott

 

[Seaduced]

Re: 90HP, Merc's 2006, EFI-stalling in low speed

Scott - Thanks for your comments. It was a good try but was not the problem. Switched IAC's with the one boat NOT stalling and the problem stayed with the boat that was already stalling. The other still ran correctly.

Thank you for the good idea!!!!

Any one else??

Seaduced

 

[HawaiiMercury]

Re: 90HP, Merc's 2006, EFI-stalling in low speed

I have the same problem one moter runs perfect on stalls at idle. Thinking it is a fuel problem fuel pump crashed and was replaced but still have the same problem. Did you have any luck?