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By AaronD1982
Next problem with charging system to tackle, any help would be appreciated.
New starter solenoid....check
New Voltage Regulator...check.
Dynamic test to Stator.....bang...pulling like 2 Volts AC
Problem: Without pulling the part out and stranding the vehicle at the shop forever.... I am trying to find the correct stator or at least one that might not be exact for the Massimo Buck 400S, but fit and connect and do the job if that makes sense.... if anyone has any ideas, please shoot them my way.
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By AaronD1982
I recently purchased a 2019 or 2020 (no manual) Massimo 400S Buck Series UTV. It ran fine for a couple days but the low battery light was flashing while it drove. It then died in the field one day and I was able to jump the battery and get it rolling enough to get back to the barn. It started both times I turned the key for a couple days after and when driven died 10 minutes later in the driveway. Even after jumping it had no juice, but with the key out of the ignition it kept trying to start, a quick look on the Google machine and it suggested starter solenoid or ignition switch was the culprit. Fair enough, let's just order a replacement solenoid, right? No way Jose....the pin connector on the UTV is a 2-pin white plastic connector and the part received is a 4 pin. How do I swap that and make it work? Can I even? Where do I find correct parts in the future?
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By Eman85
I have been searching and can't find much info on these units. Pretty surprising as every other thing I own I find a lot of info on. Researching for tech info and such it's like no one owns any of these yet I see them everywhere.
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By Jeff freeman
I have a Coleman 550. Was having problems to start with where it would start and then shut off after a couple tries. It would take off and be good. It then got to a point where it would not start at all. I replaced the fuel injection twice the second time I replaced it I noticed a mouse or something had chewed one of the wires that connect the electrical to the fuel injector. . So two-part question first does anybody have a part number for that wire harness? Second, any other ideas after I fix the wire harness permanently on what could keep it from starting I have gas flow up to the fuel injector.
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By gridlock
After three years, my Sector completely died. Something caused the hot wire under the seat from the charger to disintegrate, so the batteries weren't being charged. The batteries weren't charging 100% anymore, so decided to convert to lithium.
As most others have done, I went with 4-48v batteries in parallel, as I believe that will be plenty of amp-hours for my needs, but can always add more if needed. I went with LiTime wired CAN batteries and mounted their digital gauge on the dash above the current one, which fit perfectly. I didn't think the existing battery brackets worked well for the new batteries, so made my own out of aluminum L rails, which makes it much more secure (and saves a few more ounces :)). Since I wired them in a 'balanced' configuration, I had to make all new cables from 0/1 gauge wire and 8mm posts. I updated the DeltaQ charger to profile 233. Cleaned everything up (I must have vacuumed 20 pounds of dirt!), put it all together and... wham!
So far, it definitely is better than with the original AGM batteries. Sustains speed better going up hills, and seems to have plenty of reserve current. The difference in weight with 4 LiPo vs 8 AGM batteries surely doesn't hurt!
Thanks to everyone on this forum, but special shoutout to GNFO who was a big help.
A few questions:
In the 'any tips' thread, EVSupport mentioned reprogramming the Sevcon to reflect the new discharge curve of the lithium cells, but I didn't see any more info about that or how to do that. Is there any more info about that?
Have folks replaced the onboard 12v battery, and if so, with lithium? I'm not sure why there is a 12v battery; why didn't they just step down the current of the 48v system to provide power to accessories?
Is there a recommendation as far as charging with the lithium conversion? As far as I understand, it is better to let lithium batteries discharge somewhat (but not completely) than keep them charging all the time. What do you think?
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