Johnson 1997 150HP ficht Check engine at 4000 rpm

moons

Seaman Apprentice
Joined
May 10, 2011
Messages
30
Hello Guys
I need you help last weekend I was fishing on Vennustiano carranza lake in mexico but after an intermittent no oil light at low speed I turn off the boat and restart with no problems. I plane the boat and run between 3000 to 4000 rpm during 5 or 10 minutes and the check engine light and horn start. After 10 or 20 seconds the horn shut off and the check engine light stay on the dashboard. I turn off the boat and run agains and after 1 or 2 minutes I have the same issue but never go into slow mode.


Any tip what could be causing the check engine on 3000rpm or 4000rpm? After 5 minutes runing.
This fails has happen 2 times on the last 5 fishing trips.

2 weeks ago I try to connect the software but my computer has windows xp not windows 98. I am trying to find an old lap top to diagnosis if not I will do it manually.

I will appreciate any help.
 
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