my new 2017 HISUN 400HS and the engine sputters over 10mph
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By didgeridoo
Hello, All! I've decided to replace the traction batteries in my 2018 Sector E1 with a 48V Lithium set. They may be expensive, but I figure the Discovery Dry Cell are, too. I am not looking for the max driving range, as I have never received near the brochured range to begin with, but a good mix of charge/ get work done/ charge is what I am expecting.
I have settled on the 48V EAGL kit from bigbattery dot com. Each battery pack provides 30Ah. The kit ships with a charger, as well. The packs would be physically connected in parallel (using a busbar) to one another, maintaining the 48V voltage, but together would be able to provide the amp draw the buggy pulls when going up hill or towing a rake (rated 320 max continuous Amps). This is in comparison to the serial connection the eight 6V lead batteries. Each of the EAGL batteries looks to have its own BMS; am I correct in thinking I will have to use their included charger rather than (simply) changing the onboard charger to lithium mode? The chemistry of the pack is LiFe PO4, for what it's worth. I haven't torn anything apart yet (to diagram), so I am not sure how the dash will interpret the AMP draw, but the kit I am looking at includes a dash mounted charge indicator.
If anyone has completed a similar conversion, do you have any tips? Specifically, how did you remove the original batteries, and how did you secure the new ones? I am guessing that almost any change from the stock batteries would involve at least some modifications. Any tips would be appreciated, especially things I may have failed to consider. Thanks!
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By Will Sutton
I've got a 2023 UT400 (bought from tractor supply) and I've been beating my head against a wall with it.
It will start and idle perfectly. The second I touch the throttle it sputters and dies.
I've checked that the fuel pump is working (it is).
I've replaced the injector, throttle position sensor, O2 sensor, and intake air sensor. All with no change.
I've just taken a look a the schematic, and there is a crank position sensor as well.
Could this be the source of my troubles? If so, where is this thing located? I can't seem to find it on any drawings from the parts suppliers.
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By John M in Louisiana
Quick question about replacing the plug. One of the prongs pulled out, so I'm thinking it will be an easy fix to connect the old cord with a new plug but I'm unsure about the specs. 15amp 125v? Is it more complicated than that? I do plan to buy a plug that's water tight.
Thanks in advance!
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By A P
Hi
I have a 2022 hisun sector eps 550. 30amp fuse is blown for eps. Checked the motor and it’s fine. Opened up the controller and found a bad diode. Dealer wanted 500$ for the controller. Just posting this in case it helps someone. I couldn’t read numbers from the old one so just took a guess and replaced it with a 100v 3amp diode.
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By John Gubancsik
I started my UT400 but forgot to buckel my seat belt. It bogged down and then died. Only way I could restart it was to press the gas pedal and if I let up on it, it stalls. Any suggestions? Thanks.
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