Question about voltage regulator
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Intermediate
Joined: Dec 2016
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From: Arlington Tx
Question about voltage regulator
Will a bad voltage regulator make my sporty not start. When I try to turn it over it wont start checked the battery good as well as the stator (what i could check with the bike not running) anything else i could check or would it be the voltage regulator? Thanks 09 sporty 883
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Does not make sense that it would be your VR if your battery is good. The stator produces AC power and the VR converts AC to DC to charge the battery. If the battery is good, your VR logically is working if your bike has been running. With a good battery, your bike should start so probably another issue i.e. starter, coil, or even a bad connection perhaps bad ground. Does your bike turn over but won't start or nothing i.e. no lights, etc.?
Last edited by hscic; Nov 14, 2018 at 01:01 AM.
Road Warrior
Joined: Jul 2013
Posts: 1,649
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From: Indianapolis
If the battery has over ~12.6 volts, check the battery cables, both ends of each one.
Make sure there isn't any corrosion at either end especially the negative connection to the engine.
The early EFI Sportsters have issues with corrosion at the fuse box.
Check your fuses and relays, clean the contacts.
Do you hear the fuel pump run?
The ignition and fuel injectors are controlled by one relay, the starter motor is a second relay.
If you do not hear the fuel pump but it turns over, switch the two relays.
If you then hear the fuel pump but it doesn't turn over you have a bad relay.
Make sure there isn't any corrosion at either end especially the negative connection to the engine.
The early EFI Sportsters have issues with corrosion at the fuse box.
Check your fuses and relays, clean the contacts.
Do you hear the fuel pump run?
The ignition and fuel injectors are controlled by one relay, the starter motor is a second relay.
If you do not hear the fuel pump but it turns over, switch the two relays.
If you then hear the fuel pump but it doesn't turn over you have a bad relay.
Thread Starter
|
Intermediate
Joined: Dec 2016
Posts: 39
Likes: 0
From: Arlington Tx
Does not make sense that it would be your VR if your battery is good. The stator produces AC power and the VR converts AC to DC to charge the battery. If the battery is good, your VR logically is working if your bike has been running. With a good battery, your bike should start so probably another issue i.e. starter, coil, or even a bad connection perhaps bad ground. Does your bike turn over but won't start or nothing i.e. no lights, etc.?
Thread Starter
|
Intermediate
Joined: Dec 2016
Posts: 39
Likes: 0
From: Arlington Tx
If the battery has over ~12.6 volts, check the battery cables, both ends of each one.
Make sure there isn't any corrosion at either end especially the negative connection to the engine.
The early EFI Sportsters have issues with corrosion at the fuse box.
Check your fuses and relays, clean the contacts.
Do you hear the fuel pump run?
The ignition and fuel injectors are controlled by one relay, the starter motor is a second relay.
If you do not hear the fuel pump but it turns over, switch the two relays.
If you then hear the fuel pump but it doesn't turn over you have a bad relay.
Make sure there isn't any corrosion at either end especially the negative connection to the engine.
The early EFI Sportsters have issues with corrosion at the fuse box.
Check your fuses and relays, clean the contacts.
Do you hear the fuel pump run?
The ignition and fuel injectors are controlled by one relay, the starter motor is a second relay.
If you do not hear the fuel pump but it turns over, switch the two relays.
If you then hear the fuel pump but it doesn't turn over you have a bad relay.
Thread Starter
|
Intermediate
Joined: Dec 2016
Posts: 39
Likes: 0
From: Arlington Tx
If the battery has over ~12.6 volts, check the battery cables, both ends of each one.
Make sure there isn't any corrosion at either end especially the negative connection to the engine.
The early EFI Sportsters have issues with corrosion at the fuse box.
Check your fuses and relays, clean the contacts.
Also its around 12.2
Do you hear the fuel pump run?
The ignition and fuel injectors are controlled by one relay, the starter motor is a second relay.
If you do not hear the fuel pump but it turns over, switch the two relays.
If you then hear the fuel pump but it doesn't turn over you have a bad relay.
Make sure there isn't any corrosion at either end especially the negative connection to the engine.
The early EFI Sportsters have issues with corrosion at the fuse box.
Check your fuses and relays, clean the contacts.
Also its around 12.2
Do you hear the fuel pump run?
The ignition and fuel injectors are controlled by one relay, the starter motor is a second relay.
If you do not hear the fuel pump but it turns over, switch the two relays.
If you then hear the fuel pump but it doesn't turn over you have a bad relay.
Last edited by Matthew Valinsky; Nov 14, 2018 at 10:14 AM.
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From: Honah Lee
A good stator and regulator will show about 14.5 or so at the battery when at 2000 rpm. (ignore other voltage at different RPM. ) Always check also for AC when checking the voltage. Should be none. That will tell you regulator is defective. Also, check lead of battery and wire. That shows you have good connections.
You need an AC/DC volt ohm meter.
When cranking, the battery voltage of a good battery should drop below 9.6. If it does, the battery needs replaced.
Last edited by Jackie Paper; Nov 14, 2018 at 10:59 AM.
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You need 3 things to start.....spark, fuel, and compression. Check the easy stuff first...spark, then fuel, then compression. process of elimination.
Thread Starter
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Intermediate
Joined: Dec 2016
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From: Arlington Tx
Acting like a dead battery is clic clic clic....so if it turns over, it is probably not your charging system and probably another issue.
You need 3 things to start.....spark, fuel, and compression. Check the easy stuff first...spark, then fuel, then compression. process of elimination.
You need 3 things to start.....spark, fuel, and compression. Check the easy stuff first...spark, then fuel, then compression. process of elimination.
Last edited by Matthew Valinsky; Nov 14, 2018 at 03:23 PM.