1989 Johnson 90hp Not Charging......????

[chuckie]

Hi to all you fellow water lovers!

I have a real puzzle on my hands, I have a 1989 Johnson 90hp outboard motor and there appears to be no charge back to the battery, I had intermitent tach signal for a few days when running the boat and then one day I turned off the motor the battery was dead.

I pulled the fly wheel and checked the stator, it was cracked and 'seeping' black 'insulation'...? I figured there is the problem. Changed it, still no charge.

I pulled the regulator and replaced it, still no charge, I checked that my battery was good, I have checked ALL ground wires and still no charge...? I have checked, double checked and triple checked wiring connections and placements, still nothing.

Any suggestions?

 

[tashasdaddy]

Re: 1989 Johnson 90hp Not Charging......????

not charging is usually the rectifier. it changes the ac voltage of the engine to dc for the battery. also effects the tach.

 

[chuckie]

Re: 1989 Johnson 90hp Not Charging......????

Thanks for the prompt reply, on my 1989 90hp Johnson, where might one find the rectifier? I assume the rectifier can not be tested? I will just need to remove it and test the motor with a new one in place?

 

[F_R]

Re: 1989 Johnson 90hp Not Charging......????

If I'm not mistaken, the rectifier and voltage regulator all all one piece on that motor.

 

[rickdb1boat]

Re: 1989 Johnson 90hp Not Charging......????

Yes, it is one unit....

 

[DHPMARINE]

Re: 1989 Johnson 90hp Not Charging......????

Basicly you have a flywheel magnet activating your stator.That activates your rectifier/regulator (the same unit) and your battery gets charged.

There is a grey wire to run your tach.

There is a red wire to charge the battery.

disconnect the grey wire and see what happens.Bad tach.?

I really think that red wire is not getting a battery + signal from the wiring harness.


DHP

 

[chuckie]

Re: 1989 Johnson 90hp Not Charging......????

Yes, the regulator and rectifier are one unit, we found the problem to be a broken ground wire on the starter solinoid where the red wire from the regulator/rectifier hooks up..........thanks for all the input.

 

[DHPMARINE]

Re: 1989 Johnson 90hp Not Charging......????

And thank you for posting back that you got it fixed,and how.

DHP