Very Slow TXT 48v

[dwhitt74]

My 2016 TXT48 that I acquired a few weeks ago only runs 11mph with 23" tires on it. It was slow when I got it, but it had factory wheels and tires and old batteries on it, so I figured that was the cause. I put new Trojan 8v batteries on and 23" wheels/tires and it is still extremely slow. It also feels like the Regen braking is very strong, like it will almost throw you out the front if you take your foot completely off the throttle pedal going "full speed." I unplugged the speed sensor to see if it acted differently, but it did not. Could a bad speed sensor be the culprit? Is it possible it is programmed to drive as such? Any other areas I should be looking into as a culprit? Thanks in advance for any help you can provide.

[bbbdale]

If you unplugged the speed sensor and it didn’t make a difference then its probably bad.


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[ojo]

When i got my RXV it had the same slow speed, it was used in a golf resort before and the controller was programmed to one of the ( 6 ) lower speed settings.

[dwhitt74]

Originally Posted by bbbdale

If you unplugged the speed sensor and it didn’t make a difference then its probably bad

That's kinda what I was thinking but I wasn't sure. Got a new speed sensor this morning. I'll install it and see if there's a difference. BUT. I've read several threads on here where people got bad speed sensors new in the box, so I'll keep that in mind.

Yes, it could be the programming also, as the guy I bought it from had tweens that drove it around his property, and he bought it from a dealership that may have gotten it from a golf resort or something, too.

I'll report back on the new speed sensor here in a bit. Thanks

[dwhitt74]

New speed sensor didn't change anything. Still same top speed and strong regen braking. Any other ideas other than taking it to get programmed? I had read somewhere that BobBoyce (I think that's what it was) can program this controller, but I can't pm him for some reason. Anybody know if he still does this? Curtis 1206hb controller

[kgsc]

Bob does but doesn’t do mail in anymore. He would have to come to you. Where are you located?

[dwhitt74]

Originally Posted by kgsc

Bob does but doesn’t do mail in anymore. He would have to come to you. Where are you located?

I'm in Fort Worth, TX.

[kgsc]

Not sure if he goes that far but you can ask. Send a pm to usgicollector with your contact information and what you have. He can tell you. Option 2 is have a dealer apply the freedom dongle and turn it up the rest of the way with a handheld.

[dwhitt74]

Originally Posted by kgsc

Not sure if he goes that far but you can ask. Send a pm to usgicollector with your contact information and what you have. He can tell you. Option 2 is have a dealer apply the freedom dongle and turn it up the rest of the way with a handheld.

Ok I'll try a local dealer first. Thanks. I'll report back after I do.

[dwhitt74]

Got it sorted out. Went to local dealer and got the freedom unlock, them he turned it up the rest of the way. I jump on to test drive and it still is maxed out at 10mph 🙁. Chat with him and his tech a little while and he checks for faults on it and finds speed sensor fault as an active fault. I told him I just replaced the speed sensor, and he had also heard and seen new speed sensors that were faulty. He sold me a new one stopped sensor to try. Got home and went to install the new-new speed sensor and realized I had put the magnet ring that screws onto the shaft on backwards. Reversed it and tested, with great results. Runs about 23mph on flat pavement and was pulling a steady 20mph up a paved steady incline. Thanks for all the help and feedback.