Engine light
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Intermediate
Joined: Jun 2023
Posts: 27
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From: Yukon,Ok
Engine light
97 EGUC
Engine light comes on and goes off. Voltmeter drops to about 10 volts at idle and climbs to about 14 volts at higher rpm’s. Voltage regulator? Bike has just under 70k miles.
Engine light comes on and goes off. Voltmeter drops to about 10 volts at idle and climbs to about 14 volts at higher rpm’s. Voltage regulator? Bike has just under 70k miles.
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Joined: Sep 2017
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From: memphis
first check battery voltage at idle and under load and report your findings.
also check for codes its probably one stored.
also check for codes its probably one stored.
Last edited by memphisharley; Feb 27, 2024 at 06:04 PM. Reason: codes
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From: Vermont
Thread Starter
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Intermediate
Joined: Jun 2023
Posts: 27
Likes: 6
From: Yukon,Ok
May sound like a dumb question, but is there a way to read codes on a ‘97?
At idle the voltage is around 10 volts. At hiway speed it climbs a bit over 14 volts.
At idle the voltage is around 10 volts. At hiway speed it climbs a bit over 14 volts.
Last edited by Harleyuc97; Feb 27, 2024 at 07:11 PM.
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From: memphis
thanks
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Joined: Jan 2020
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From: Colorado
To add, normal for the oil light to be on when you first start the bike, and should go off in about a half second once the motor pressure comes up.
If code is stored, then when you start the bike, instead of oil light going off right way, will stay on for about 10 seconds more before going off.
And being an Evo, motor idle needs to be set at 1K RPM's, or your going to have oil pressure problems to being with the motor idling lower than that, as well as low charging voltages as idle as well.
If code is stored, then when you start the bike, instead of oil light going off right way, will stay on for about 10 seconds more before going off.
And being an Evo, motor idle needs to be set at 1K RPM's, or your going to have oil pressure problems to being with the motor idling lower than that, as well as low charging voltages as idle as well.
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Intermediate
Joined: Jun 2023
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From: Yukon,Ok
The light doesn’t come on at idle, it comes on around 40-50 mph. It goes off as the rpm’s come down. Also the voltage swings from around 10 volts up to 14 volts as rpm’s increase and drops to 10 volts at idle. I haven’t noticed this swing in voltage previously.
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From: Honah Lee
Assuming battery shows good and cables are good, corrosion free and tight.
Check the stator first. For grounds. For AC voltage. You've already told us what the regulator is doing.
It just may be doing the best it can if stator is bad or battery is bad too
Stator is easy check with a volt/ohm meter.
How to in the sticky.
Check the stator first. For grounds. For AC voltage. You've already told us what the regulator is doing.
It just may be doing the best it can if stator is bad or battery is bad too
Stator is easy check with a volt/ohm meter.
How to in the sticky.
Last edited by Jackie Paper; Feb 28, 2024 at 04:14 AM.