Stuck in S.L.O.W. mode??

[Brentvo]

I'm kinda reposting this since I've been doing some reading and have a better understanding of my problem. <br /><br />I have a 1986 Johnson 150 that is stuck in S.L.O.W. mode. The alarm sounds steadily as soon as the key is turned on, BEFORE I turn the engine over. After reading several posts on this board I understand that S.L.O.W. mode should reset when the engine is stopped/started again. This is not the case here - my alarm goes off constantly. The engine cranks with no problem but is limited to about 2500 rpms. <br /><br />Water pump is pumping as the motor pees like a champ. <br /><br />Why is this engine stuck in this mode? What can I do? I'm beginning to think it may be a short - but where? Not too sure what to look for. <br /><br />Any advice is greatly appreciated. Thanks guys - love the board....

 

[steelespike]

Re: Stuck in S.L.O.W. mode??

Bill, Im not going to be much help.<br />Glad to see youve been doing some research.<br /> If you have been reading from a ser. manual<br /> way to go.If you dont have one GET ONE.<br /> I have 2 for my motors and am going to get a 3rd.<br /> they really make things much clearer.<br /> Try the library,NAPA,tab at the top of this page,<br />amazon.com ,ebay.If you have deep pockets try<br />www.kencook.com.<br /> Sorry Im not more help but Im pretty sure a<br />manual will help clear things up.

 

[Trent]

Re: Stuck in S.L.O.W. mode??

On some models..Disconnect the temp sender and then try it. Bad temp sensor can keep it in the slow mode. (Engine thinks its overheating)

 

[Brentvo]

Re: Stuck in S.L.O.W. mode??

Spike, Trent - Thanks for the replies, a manual is my next step as I'm not sure where the temp sender/sensor is located exactly...