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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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08-11-2015, 09:40 AM | #1 |
Not Yet Wild
Join Date: Aug 2008
Posts: 20
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Only goes forward when hits certain sweet spot
1993 Ezgo. Brand new batteries fully charged. FNR cleaned and wires going to and fro all sanded and cleaned.
Stutters big time until it hits a certain area of accelerator and will cruise quite well. If pedal is pressed down any further than the sweet spot, it will not run. Switched the FNR reverse and forward and it replicates same in reverse. I believe that can rule out FNR Where is the next step to look please Yes very novice... yet with this forum I have been able to keep both my old old gas and electric Ezgos running at my campground for years. Very few posts needed, as most information needed has already been answered in other posts. Could not find this or even how to correctly describe Thanks in Advance |
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08-11-2015, 09:56 AM | #2 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,419
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Re: Only goes forward when hits certain sweet spot
I would replace the potentiometer.
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08-11-2015, 12:16 PM | #3 |
Not Yet Wild
Join Date: Aug 2008
Posts: 20
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Re: Only goes forward when hits certain sweet spot
Thanks. I will need to look that up to see what it is. Novice
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08-11-2015, 01:02 PM | #4 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,419
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Re: Only goes forward when hits certain sweet spot
It's the throttle signal device.
First monitor battery pack under acceleration, if voltage not dropping when the cart is shuttering pack likely ok. Carefully tighten enter pivot nut on F&R until it gets a little harder to turn (usually 1/4 to 1/2 turn) if problem persists. see Potentiometer. Test signal 0-5k with ohm meter. Signal should be smooth. |
08-11-2015, 02:33 PM | #5 |
Not Yet Wild
Join Date: Aug 2008
Posts: 20
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Re: Only goes forward when hits certain sweet spot
Have a Voltage meter on cart, and watched did not go down.
Will try tightening this weekend, as do tend to overtighten things, so just tightened as fear of breaking the copper pivot studs. Have learned an Ohm meter pretty well, so will check when out there this weekend and worse case will know the exact potentiometer needed before ordering. Thanks and will let you know the findings |
08-11-2015, 03:34 PM | #6 | |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,419
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Re: Only goes forward when hits certain sweet spot
Quote:
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08-23-2015, 01:38 PM | #7 |
Not Yet Wild
Join Date: Aug 2008
Posts: 20
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Re: Only goes forward when hits certain sweet spot
Finally got to check. Took off FNR and clean all copper again. Ohm set at 20k, read .01 accelerate would start at about 300 and when down to where it would die, got reading up to almost 2000. Odd the sweet spot read about 500, so thought perhaps had meter wrong so set meter at 200k and read 3 to 19.8, so believe checked correctly
so it does show I believe potentiometer ohm rising at acceleration, yet 2021 was highest reading |
08-23-2015, 02:07 PM | #8 |
Not Yet Wild
Join Date: Aug 2008
Posts: 20
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Re: Only goes forward when hits certain sweet spot
Tried reading set at 2000 rather than 20k or 200k. Does lose all readings after accelerate past sweet spot. Potentiometer is rather expensive: would like to insure before. You guys are the best
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08-23-2015, 02:39 PM | #9 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,419
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Re: Only goes forward when hits certain sweet spot
Pot should read 0-5000 in forward and 0-2500 in reverse
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08-27-2015, 08:57 PM | #10 |
Not Yet Wild
Join Date: Aug 2008
Posts: 20
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Re: Only goes forward when hits certain sweet spot
Thank you both! Easy fix of replacing potentimeter. Have not had time to check ohms, yet it's all sweet spots now. Use for my grandchildrens visit and cruising and to now be able to cruise from 1-14mph is fantastic.
This forum is the best!!!! |
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