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Question for Joe Reeves

C

codkiller

New member
1990 200hp Evinrude. The idle is not idling down after startup even after the engine warms up. The engine should fast idle for about 5 seconds and then idle down. Is the fast idle controlled by the power pack? Thanks Joe.
 
There is a "Fast Start" feature incorporated in that engine that electronically advances the spark at a cold idle. WHen the engine temperature reaches a certain degree, that Fast Start disengages and the engine rpm drops down to a normal idle.

The purpose of the Fast Start feature is so that we do not need to advance the throttle when cold starting the engine. Frankly I don't care for this feature.

If the engine runs cold constantly, it's possible a thermostat is jammed open, something of that nature... OR... the throttle cable is adjusted loosely and incorrectly at the engine cable clamp.
 
Easy to check on.... If the heat sensor in the cylinder head has two wires leadinf from it, it has the Fast Start feature.
 
Thanks every one for the replies. The temp switch on this motor ahs 2 wires, white/black and a tan wire. Looks like the switch needs replacing. I used the boat over the weekend. When I turned the key to the on position the warning horn came on and stayed on. I discounted the whit/black wire and the horn went off. I check the switch and it was closed between white/black and ground. The part # on the switch is 583789. I found similar switches on ebay for a lot less money. Joe are parts
583039 and 586165 interchangeable with 583789? Thanks
 
583039 and 586165 are not listed in the parts price book which normally means they are not part numbers but rather factory casting numbers or some such thing. At any rate... they do not interchange with the sensor tou need which is part number 583789.

I checked the new ones I have and neither lead grounds out... so indeed yours is faulty. PM me and remind me of what we're speaking of, also include your email address.
 
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