1988 Johnson 88 sp

E

Ed Holland

Recruit
Joined
Mar 12, 2004
Messages
5
My motor continues to run, at a slower speed, when I turn the ignition off or when I activate the kill switch. After about 3-5 minutes it will shut off.<br /><br />Any ideas?<br /><br />Thanks, <br /><br />Greenhornet
 
C

crazy charlie

Vice Admiral
Joined
May 22, 2003
Messages
5,385
Re: 1988 Johnson 88 sp

Mine does that on occasion too.I usually just put it in gear and it shuts down.Charlie
 
rickdb1boat

rickdb1boat

Supreme Mariner
Joined
Jan 23, 2002
Messages
11,195
Re: 1988 Johnson 88 sp

Sounds like a defective ignition switch is not grounding out the engine when you turn the key to off. You can ground the Black/Yellow wire either at the control box or at the coil and see if it stops. If so, it's the switch..
 
rickdb1boat

rickdb1boat

Supreme Mariner
Joined
Jan 23, 2002
Messages
11,195
Re: 1988 Johnson 88 sp

So Charlie, you think it's detonation doing it? Sounds like a good time for a decarb job or put new plugs in. Sorry, Didn't see that it ran on SLOWLY after the switch was turned off. Also, might want to check the timing and also make sure the timer base is returning close to full retard when at idle.
 
A

arboatdr

Petty Officer 2nd Class
Joined
Feb 22, 2004
Messages
144
Re: 1988 Johnson 88 sp

check the connections at the pack where they plug into the engine harness. One of your packs is not grounding out. Most of the time it is corrosion in the amphenol connector. you can use an omh meter on the black/yellow wire (pack side of connector) to see if you are grounding out the stop circuit. I don't reccommend grounding the black/yellow while running as it can shock the crud out of you.
 
E

Ed Holland

Recruit
Joined
Mar 12, 2004
Messages
5
Re: 1988 Johnson 88 sp

I found the problem why the 88 Johnson would not cut off. As you said, it was the black/yellow. Taped wires had covered up a break. Repaired, cuts off good.<br /><br />Thanks to all.
 
You must log in or register to reply here.
Top