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Gas EZGO Gas EZGO Marathon, Medalist, TXT and RXV. |
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Thread Tools | Display Modes |
10-17-2019, 03:38 PM | #1 |
Not Yet Wild
Join Date: Oct 2019
Posts: 7
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Starter-Generator/ Electrical Mystery
'90 EZGO Robin 3PG motor. When stepping on acc to start I was increasingly getting just a hum from the Strtr/Gen & a 1/2 turn or so of rotation. Usually if I waited a few secs or kept pressing/releasing the acc it would kick over normally and run. I finally decided the Strtr-Gen which was the original Hitachi was going bad or need brushes so I just bought a new one. After install it does the exact same thing. After tracing voltage all through the micro-switches, cleaning all the cable terminals, confirming the solenoid was working etc I put 12v through a jumper cable directly to F2 on the Strtr which is where the solenoid cable goes. Exact same thing- hum and barely a 1/2 turn of the engine. I can easily turn the eng. by hand with the centrifugal clutch so it's not seized. I'm stumped- any suggestions on how else to troubleshoot would be appreciated.
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10-17-2019, 06:01 PM | #2 |
Test before replacing
Join Date: Aug 2013
Location: Ohio side of the Pennsylvania border.
Posts: 3,495
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Re: Starter-Generator/ Electrical Mystery
Load test your battery.
Put a meter on the battery terminals. Full charge is 12.74 volts. Now step on the pedal. The usual drop is 1 volt. If the voltage drops to 9.6 volts, or less, the battery is junk. |
10-18-2019, 07:13 AM | #3 |
Not Yet Wild
Join Date: Oct 2019
Posts: 7
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Re: Starter-Generator/ Electrical Mystery
Battery is new and fully charged.
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10-18-2019, 08:27 AM | #4 |
Test before replacing
Join Date: Aug 2013
Location: Ohio side of the Pennsylvania border.
Posts: 3,495
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Re: Starter-Generator/ Electrical Mystery
Ok, since you have bypassed the positive battery cable, we know it's not that.
I would take the FnR switch apart, and clean all of the large copper terminals. This is your wiring diagram. http://www.buggiesgonewild.com/attac...n-retrofit.jpg |
10-18-2019, 04:37 PM | #5 |
Not Yet Wild
Join Date: Oct 2019
Posts: 7
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Re: Starter-Generator/ Electrical Mystery
Thanks- I sanded and cleaned every cable terminal again, cleaned or replaced every wire connection, took apart & cleaned the F-N-R module. Not sure where the resistance was but now it works perfectly.
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