1992 70hp Johnson - electrical issue with Trim and Start and gear shaft position fail

Fisherg3

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Oct 15, 2021
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41
Post your voltage at the battery, post your voltage at the battery side of your soloniod, post your voltage on the he starter side of the solenoid while someone turns the key.

Most likely in that area.

No wing nuts!
Ok. At dinner at the moment with my boy. Will go back on my way home and check those and let you know what they are. I did notice today that when I turned the key it dropped the voltage down to 11.1 and slowly raised back up to 12.7. Which I don’t recall it ever doing that. But it also usually starts immediately where as today it didn’t and so I noticed the meter
 

saltchuckmatt

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Jul 19, 2019
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2,841
Ok. At dinner at the moment with my boy. Will go back on my way home and check those and let you know what they are. I did notice today that when I turned the key it dropped the voltage down to 11.1 and slowly raised back up to 12.7. Which I don’t recall it ever doing that. But it also usually starts immediately where as today it didn’t and so I noticed the meter
Grab some jumper cables to and we can test other things if the test comes back good.
 

Fisherg3

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Oct 15, 2021
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41
Grab some jumper cables to and we can test other things if the test comes back good.
Ok
Bat -12.7 - 10.5 at key turn

Solenoid - BAT SIDE - 12.7 key turn 5.5

Solenoid bottom - 000. 5.5 at key turn

Starter. - 000. Key turn 5.3
 

Fisherg3

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Joined
Oct 15, 2021
Messages
41
Post your voltage at the battery, post your voltage at the battery side of your soloniod, post your voltage on the he starter side of the solenoid while someone turns the key.

Most likely in that area.

No wing nuts!
Lol. Just now seeing the wing nuts! No, I don’t use wing nuts. Ive not even seen a wing nut in years. 🤣
 

saltchuckmatt

Commander
Joined
Jul 19, 2019
Messages
2,841
Ok
Bat -12.7 - 10.5 at key turn

Solenoid - BAT SIDE - 12.7 key turn 5.5

Solenoid bottom - 000. 5.5 at key turn

Starter. - 000. Key turn 5.3
You should only loose a volt or two so something is wonky.

Put your jumper cables on the positive post of the starter, connect them to the battery and then carefully touch an engine ground somewhere. If it cranks, you know it's the battery/wires/soloniod issue....if it doesn't crank your starter has issues.
 

Crosbyman

Vice Admiral
Joined
Nov 5, 2006
Messages
5,783
probably oxydized crimps or connections . voltage drops at the highest resistance point (Ohms's law) so work back from the starter + post (assuming the starter works has uggested) with your volt meter

measure backwards from
  • starter + post
  • solenoid out 12v + post to the starter
  • solenoid In 12v + post from the battery
  • Battery +12 post
grounding is just as critical ... clean all connections ... bat post . engine connection etc...

while STARTING with no results twist and wiggle all cabling . If something changes you found the resistive point. !!

Batteries are strange things sometimes they test ok but under load they go bad . tried a different battery ? just in case.

 

Fisherg3

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Joined
Oct 15, 2021
Messages
41
You should only loose a volt or two so something is wonky.

Put your jumper cables on the positive post of the starter, connect them to the battery and then carefully touch an engine ground somewhere. If it cranks, you know it's the battery/wires/soloniod issue....if it doesn't crank your starter has issues.
1st. Wait till you see what was wonky!
So I got my battery all charged and shows 13.4. Nothin. So I did the cables to the starter. Sparked at the ground connection like 4th of July. But that’s it. Like the starter was dead. But it just worked the other day.. so im about to video the cable test and I see the teeth of the starter are touching the fly wheel gear. Not too much to get them unstuck and it fired right up and easier than ever.

2nd. So the shift shaft rework with measurement is about to commence. Mind you, I’ve not touched it since the other day. And then in neutral it’s making this noise and I don’t want to Ef it up. I also notice if I push the throttle forward it jams up at half way and it’s just as difficult to put back. Per usual once in neutral it’s smooth as butter to R and forward from R to N.
 

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Fisherg3

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1st. Wait till you see what was wonky!
So I got my battery all charged and shows 13.4. Nothin. So I did the cables to the starter. Sparked at the ground connection like 4th of July. But that’s it. Like the starter was dead. But it just worked the other day.. so im about to video the cable test and I see the teeth of the starter are touching the fly wheel gear. Not too much to get them unstuck and it fired right up and easier than ever.

2nd. So the shift shaft rework with measurement is about to commence. Mind you, I’ve not touched it since the other day. And then in neutral it’s making this noise and I don’t want to Ef it up. I also notice if I push the throttle forward it jams up at half way and it’s just as difficult to put back. Per usual once in neutral it’s smooth as butter to R and forward from R to N.
*The in water test WAS about to commence
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
38,788
Motor must be running to shift properly.----Or if stopped on land / trailer the propshaft must be turned when shifting this motor.
 

Fisherg3

Seaman Apprentice
Joined
Oct 15, 2021
Messages
41
probably oxydized crimps or connections . voltage drops at the highest resistance point (Ohms's law) so work back from the starter + post (assuming the starter works has uggested) with your volt meter

measure backwards from
  • starter + post
  • solenoid out 12v + post to the starter
  • solenoid In 12v + post from the battery
  • Battery +12 post
grounding is just as critical ... clean all connections ... bat post . engine connection etc...

while STARTING with no results twist and wiggle all cabling . If something changes you found the resistive point. !!

Batteries are strange things sometimes they test ok but under load they go bad . tried a different battery ? just in case.

Hello! Thanks for this info. Yes I’ve tried 3 batteries. Got it to turn over. That said the trim electric went out again. Won’t even click the relays. Gotta see if there’s another corroded and or cut spot.
 

saltchuckmatt

Commander
Joined
Jul 19, 2019
Messages
2,841
Sparked at the ground connection means clean up the ground connection.

As for the gearcase, I can't even understand you. The clicking in nutruel sounds normal.
 

Fisherg3

Seaman Apprentice
Joined
Oct 15, 2021
Messages
41
Sparked at the ground connection means clean up the ground connection.

As for the gearcase, I can't even understand you. The clicking in nutruel sounds normal.
Well it makes sense that there is lack of understanding because I don’t speak your language. All of this is first time for me. And I had never heard that noise before when the prop turns while in neutral. Just thought I’d state that it’s happening because if I didn’t and I say later that it did and it was detrimental youd says “I don’t even understand you! You’re a rookie and didn’t say you heard that clanging sound when it was in neutral?!” Just sayin. I cleaned up the ground spot along with many others. The tilt trim wires were covered with this hard plastic sheets. Inside were the wires, eaten away insulation to a spongy like feel as it has held a wet gas oil and water inside it. Not sure for how long maybe years and years? I’ve not found the problem yet but it’s somewhere close to the motor because if i move it sometimes it works
 

Fisherg3

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Joined
Oct 15, 2021
Messages
41
Ok, electrical issues all seem to boil down to the tilt trim wires at the motor. Replaced those and no more issues. This supplied the correct amount of power to the starter so no more fly will sticking to the starter teeth. Trim goes up and down just fine now.
3 down 1 to go.

I tested the shift shaft fix attempt. Goes into at start, neutral is throttle stick straight up and down. Goes into Drive nice and easy. But hard to push down past 3/4 forward. Bring it back to neutral position and it’s still in gear. Need to pull back 1/4 past neautral for it to be ‘IN’ neutral. The first time I tried to put it in reverse is did a minor skip and did engage. From that point on it did not renegade into Reverse. No skip or slip. Just high rev of the motor, no reverse.
 
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