1990 Evo ignition problem?
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Extreme HDF Member
Joined: Nov 2006
Posts: 13,389
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From: Windham,Maine
1990 Evo ignition problem?
A friend has a 90 Evo he says it shuts down after waiting a few minutes starts back up he rides maybe 10 miles it shuts down again and keeps doing it. So far he has replaced breakers. The bike has original module and coil. He is going to check all grounds and wiring that he can see hates to replace everything if there is a fix.
Have any of you had the same issues?
Have any of you had the same issues?
Outstanding HDF Member
Joined: Dec 2008
Posts: 2,007
Likes: 353
From: Ohio
Not much to go on here. But if the engine just stops running no coughing no backfiring no nothing and all lighting electric remains on it's an ignition electric problem. Bad or loose connection somewhere along power wires to ignition including the ignition switch connections.
Seasoned HDF Member
Joined: May 2008
Posts: 21,209
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From: South Carolina
Pull the cover off and inspect the ignition sensor inside the cone, look for goop oozing out of the sensor...
Item 40 in the illustration:
http://www.docshd.com/OEMpartfinder....-80597-H030037
Item 40 in the illustration:
http://www.docshd.com/OEMpartfinder....-80597-H030037
Grand HDF Member
Joined: Apr 2007
Posts: 3,728
Likes: 3,073
From: Brighton, MI
Pull the cover off and inspect the ignition sensor inside the cone, look for goop oozing out of the sensor...
Item 40 in the illustration:
http://www.docshd.com/OEMpartfinder....-80597-H030037
Item 40 in the illustration:
http://www.docshd.com/OEMpartfinder....-80597-H030037
Yes, common problem. And when it does shut down, immediately check for spark. Probably no spark till it cools off. If you have goo, then you found your problem. The other thing to check after that would be coil, but look at the sensor first. It is probably your problem. YD
Last edited by Yankee Dog; Aug 5, 2017 at 11:01 AM.
Cruiser
Joined: Aug 2007
Posts: 189
Likes: 39
From: Guildford, UK
Mine had a similar problem......and it slowly got worse.
It was the ignition coil. It stopped working as it warmed up, and worked when cool.
It was the ignition coil. It stopped working as it warmed up, and worked when cool.
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Cruiser
Joined: May 2008
Posts: 117
Likes: 6
Had same type of problem on my 1998 Softail.
Found power to coil was cutting out.
After a lot of time checking power from breaker up to handle bars and back turned out to be a bad connection in the plug between the gas tanks.
The way I tracked it down was with a small light. First connected it to the coil. Bike stopped and light was out so no power to coil. Connected light to breaker. Bike stopped and light was still on so breaker was OK. Just keep moving the light connection along the circuit until it goes out when the motor stopped.
Found power to coil was cutting out.
After a lot of time checking power from breaker up to handle bars and back turned out to be a bad connection in the plug between the gas tanks.
The way I tracked it down was with a small light. First connected it to the coil. Bike stopped and light was out so no power to coil. Connected light to breaker. Bike stopped and light was still on so breaker was OK. Just keep moving the light connection along the circuit until it goes out when the motor stopped.
Last edited by portlandron; Aug 8, 2017 at 08:40 PM.
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