Question about 2000 Harley Davidson FLHTCUI Electra Glide Ultra Classic
HD ULTRA CLASSIC 2009, fault code d1A9. Check engine light comes on from time to time at lower speeds <50 mph.
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Posted on Jan 02, 2017
SOURCE: check engine light acting up
The first thing I would check is the voltage output from the charging system. If the regulator isn’t regulating, the voltage will keep climbing as the engine speed increases. The electronics in the speedometer don’t work well at these high voltages. This would also explain the bright marker lamps. You should be able to see this with a simple voltmeter across the battery terminals.
Posted on Nov 20, 2008
What triggers the chk engine light is the the exhaust emisions. You can't feel the ozones falling? Have your cards adjusted, you are running to rich.
Posted on Nov 12, 2009
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