more help needed!!!!

[nosgsxr]

ok i have a 1992 mercury 150 carb .... i rant it about 3weeks ago on the hose and it ran fine. when the key is turned on i get 3 short beeps with the last one kinda fading off at the end. after turn the motor over then i get a fast beep beep beep beep till i turn off the key....so i did a search on here and thought i had it all figured out .....did some of the test on the other post and thought it was the oil control box.....ordered a new one and installed it and thought i was going to be good...well tonite i take it to the lake to run it and first off it wont start and then i still have the three beeps when i turn on the key and when i turn the motor over here we go again beep beep beep beep beep untill i turn off the key....what could it be now the oil cap tested ok and there is plenty of oil in the motor tank...what now and now i have to try to figure out why it not starting....HELP PLEASE!!!

 

[ufm82]

Re: more help needed!!!!

Try this. First, take the cowl off.
Run the engine to recreate the conditions sounding the alarm. Do these tests while the engine is running and the alarm is beeping. Be careful- the flywheel is very close to your hand. Keep sleeves, watches and other objects that can catch on the flywheel away. Once the alarm starts, I would first unplug the blue wire from the oil reservoir cap. If the alarm stops, either the oil level sensor is bad or the level is low. Next I would disconnect the green wire going from the alarm module to the #4 coil wire terminal on the switchbox. If this stops the alarm, either the rotation sensor is bad or the pump isn't rotating. If the alarm does not stop reconnect the green wire and unplug the white and blue/white wires to the rotation sensor. If this stops the alarm, check for no spark on #4 cylinder. If the alarm does not stop disconnect the green, white and blue/white wires. If this stops the alarm, then either the pump is not rotating, the rotation sensor is bad, or no spark on #4 or the alarm module is bad. If the alarm still does not stop, disconnect the solid blue, blue/white, white, and green wires, if this still does not silence the alarm, then the alarm module is bad. You will single out a bad component in each step, eliminating each item as you go. You can check the rotation sensor by checking its output. Turn the key on, leave power wire connected and rotate the engine. You should get 1 pulse of 5 volts for every 2 rotations. You'll need to have the plugs pulled for this test so you can turn the engine safelt and easily.

 

[j_martin]

Re: more help needed!!!!

The battery's dead, or the starter is shorted.

The oil alert will go into alarm if it's power supply dips and returns quickly. If you turn on a key in a normal boat, then quickly turn it off and on, it'll alarm like that.

They also either drop a beep, or have a weak one of the battery voltage is low.

hope it helps
John

 

[nosgsxr]

Re: more help needed!!!!

Try this. First, take the cowl off.
Run the engine to recreate the conditions sounding the alarm. Do these tests while the engine is running and the alarm is beeping. Be careful- the flywheel is very close to your hand. Keep sleeves, watches and other objects that can catch on the flywheel away. Once the alarm starts, I would first unplug the blue wire from the oil reservoir cap. If the alarm stops, either the oil level sensor is bad or the level is low. Next I would disconnect the green wire going from the alarm module to the #4 coil wire terminal on the switchbox. If this stops the alarm, either the rotation sensor is bad or the pump isn't rotating. If the alarm does not stop reconnect the green wire and unplug the white and blue/white wires to the rotation sensor. If this stops the alarm, check for no spark on #4 cylinder. If the alarm does not stop disconnect the green, white and blue/white wires. If this stops the alarm, then either the pump is not rotating, the rotation sensor is bad, or no spark on #4 or the alarm module is bad. If the alarm still does not stop, disconnect the solid blue, blue/white, white, and green wires, if this still does not silence the alarm, then the alarm module is bad. You will single out a bad component in each step, eliminating each item as you go. You can check the rotation sensor by checking its output. Turn the key on, leave power wire connected and rotate the engine. You shoul get 1 pulse of 5 volts for every 2 rotations. You'll need to have the plugs pulled for this test so you can turn the engine safelt and easily.

ok i cant get the motor to start ....and dont know why...i will do a spark test and see what i get....i did most of the above test the first time when i thought it was the oil control box.. i bought a new control box but now the beeps are still there ...and now the motor will not start

 

[nosgsxr]

Re: more help needed!!!!

The battery's dead, or the starter is shorted.

The oil alert will go into alarm if it's power supply dips and returns quickly. If you turn on a key in a normal boat, then quickly turn it off and on, it'll alarm like that.

They also either drop a beep, or have a weak one of the battery voltage is low.

hope it helps
John

its a new battery but i will put it on the chager and then try it again...when you say the starter is shorted what do you me mean...i did have the starter off what or where could it be shorted...inside or on the outside...i had it apart and cleaned the brushes....

any thought on why the motor wont start now ..only thing i did with the boat was pull the lower unit and put the new oil control box on....im going to see if i have spark to all the holes and i will let you know..

 

[nosgsxr]

Re: more help needed!!!!

ok battery is fully charged i did all the test above and the only two wires that will stop the beeping is the purple wire that looks like it goes to the bottom of a elictric block and the brownish tan color wort that goes on a post just above where the purple wire is......now what im going to check the spark on all holes...

 

[nosgsxr]

Re: more help needed!!!!

good spark on all holes ...how do i test the rotation sensor...what wires do i hook the volt meter to.... there is a black wire a blue with white stripe and a white wire ...does the sensor need to still be hooked up?? what setting does the meter need to be on?? this thing is driving me crazy!!!!

 

[nosgsxr]

Re: more help needed!!!!

ok all test done but the one above in the post just wating on some help to try that one...

 

[nosgsxr]

Re: more help needed!!!!

Ok does anyone have anything else i can try. Im stumpped. Dont know where to go from here. HELP !!!

 

[nosgsxr]

Re: more help needed!!!!

Someone must have a nother way for me to go. I need some help