2.4L 200 merc acceleration issue

[jvitiel]

I have a '95 2.5L 200hp EFI Merc. It had a similar issue and it turned out to be a switch pack. The stator was replaced a few years before I got it for unknown reasons and per the mechanic, a bad stator will stress the switch packs so they should be replaced at the same time. Mine weren't (until I did them).

[jamesbalog]

Thanks guys. I had the switch boxes and the stator as well as pretty much everything else electrical changed 4 years ago. I was hoping this issue was something stupid but i think ive already checked all the dumb things.

Now to figure out if i can swap these parts out myself

thanks again

[jamesbalog]

I also forgot to mention the tach will intermittently not work, this doesnt always Correlate with the other issue though

[phatdaddy]

I was about to ask about the tach, usually means stator. Do you have a volt gauge or voltage readout on your gps.

When they were replaced, was it with OEM or look-a-likes. I think the sierra switchboxes are ok, heard mixed reviews on the stators.

Also might want to get a merc manual and do a link.n.sync. Probably Will not help, but will eliminate some things.

[jamesbalog]

Originally Posted by phatdaddy

I was about to ask about the tach, usually means stator. Do you have a volt gauge or voltage readout on your gps.

When they were replaced, was it with OEM or look-a-likes. I think the sierra switchboxes are ok, heard mixed reviews on the stators.

Also might want to get a merc manual and do a link.n.sync. Probably Will not help, but will eliminate some things.

I do have a volt meter, and I dont think Ive ever looked at it when the problems have been occurring. I have noticed some higher than normal readings while running though in the past.

[steplift20]

I had a problem like yours years ago, I would be out and the motor was running fine than all of a sudden the oil alarm would go off and o would lose 3 plugs It turned out to be one switch box that was also hooked to the low oil alarm, changed the switch box and problem solved Also it could be the stator . If you are lucky enought to run the motor on dry land and it happens I bet half your ignition is not firing but you can only check it while it's happening Good luck and the y
Tach issue could be cause by a bad rectifier The big guns Hopefully will give your there thoughts soon

[phatdaddy]

There are a lot of expensive variables in this equation. The merc manual has some very good instructions to troubleshooting. But, before i run down the electronic rabbit hole, i would Try running it on a seperate fuel source. Fuel pump could do as u describe also. When it stalls , is primer bulb full or collapsed?

The tach issue is a good indicator, but might be seperate issue.

Not trying to muddy the water, but there are a still a few unknowns. U know your boat better than anybody, its just as important to find out what its not as what it is.