Guests - If You want access to member only forums on HSO. You will gain access only when you Sign-in or Sign-Up on HotSpotOutdoors.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
MNBIGBEAR

Warning Buzzer on 1999 Yamaha F100

5 posts in this topic

ok, the problem I am having is that when I run the motor at anything above 4500 rpms for any length of time, the warning buzzer sounds and the motor goes into safety mode. There is plenty of oil and the motor is spitting out water. Also, as long as I run the motor around 4000 rpms it runs smooth with no problems. I have read other numerous posts and I have been trying everything.

I cleaned the battery terminals, changed the oil filter, backflushed the cooling system and checked for loose wires.

My boat does not have the digital gauges so I am unaware if this is something related to the oil pressure or overheating.

Although the last time the buzzer sounded, I immediately took off the cover and put my hands right on the motor and it did not feel hot to the touch so I am assuming it is not overheating. Which leads me to believe that it is something to do with the oil pressure.

Could this be a bad sensor? Or could it be a weak oil pump or something. Ive called a few different shops and they all give me a different answer so I am leary that the problem wont get fixed unless I can nail it down prior to bringing it in. ANY suggestions? (Sorry about writing a book)

Share this post


Link to post
Share on other sites

I just went thru the exact same thing, for the last 7 weeks with a F115.

Diagnostics showed no codes.

Oil pressure and water temp were fine.

Spents several weeks in the shop.

Finally got it fixed on Thursday, after spending a couple hours on the water with the dignostic computer hooked up.

Bad ECM board.

Expensive to repair, but I dont care if its your employees, your outboard or your wife, if you cant trust it its not worth owning.

Havent gotten the bill yet, but the number $1100.00 for the ECM was mentioned a couple times.

Share this post


Link to post
Share on other sites

That would really sting....I did buy a water pump rebuild kit with a new impeller. Figured I would start there. Should be here in a day or so. Now im really crossing my fingers that this will take care of it. By the way, I did a little more checking and the water stream seemed a little weak so im thinking it may be an overheating problem.

Share this post


Link to post
Share on other sites

Good chance the water pump is your problem. I had the same problem with my 150 a while back.

The new impeller took care of it.

Good luck - be optimistic!

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0



  • Posts

    • Oh, just like the Rompers you are wearing around town then.
    • Made some frozen Arby's fries tonight and wow they were great. I would be sold just on the fries alone in this thing.   11mins cooked frozen, better and quicker than the drive thru lol
    • Actually the guy at ace was pretty close. These little guys are for framing steel studs before sheetrocking,  but yes they also could be for sheet metal work even though they are black . But your right hawg sharp and go in fast. 
    • What  a sweet find !!   Even better that you had a camera handy !!
    • Great trade and as of last year I know I wasn't ready to part with Lavine and his potential but that all changed when he went down with the injury.  I hope Lavine becomes a stud for Chicago in a few years but our time to win is now with this addition!!  Great move giving up hope for a top 15 player in the league that plays D is brilliant with the young studs we still have on roster.  Now all we need to do is add another player or 2 in free agency to strengthen our bench and we will be looking good.  Excited for the free agency to start!!! Playoffs here we come!!!!!! GO WOLVES!!!!!!!!!!!
    • http://minnesota.cbslocal.com/2017/06/22/mall-of-america-slips/   Classic case of doctors juicing up a medical claim with a series of failed therapies, creating a life long patient and a corporation with deep pockets to bill for those services.  Think not?  Dont be so naive.  Nobody wanted to fix her, they just wanted to keep billing, sad deal that happens all too often.          
    • That Drouin contract at 5.5 is kind of bad for us right now. Nino is far more proven than him and Granlund has had the beast season out of the 3 of them. Hard to see anything under 5 for each of them. 
    • Looks like the Wild moved Schroeder for....another Schroeder.  Maybe the new guy will be more consistent.   I see Evander Kane is on the trade market.  On the expensive side, but if the Wild decide to move Scandella instead of Dumba, that would free up more money.  A guy capable of scoring 30+ goals with some size would be sweet.     I am thinking Granlund and Nino each sign for in between 4-5$ mil each.  Hopefully less and hopefully Pominville will restructure a little.  Doesn't leave a ton of cap space for free agents or other guys.     Lots of moving parts in Chicago.  They seem to be moving a lot of parts around to try to work with their cap situation.  
    • I think you, or the person at Ace, meant "Sheet metal". That's what they're used for....sheet metal and HVAC work. They have a self-tapping thread. Look on your furnace where the sheet-metal ducting is fastened...bingo!   Also called "sheet metal screws".  Hope they work for ya!  
  • Our Sponsors