Running out of old parts

[CW Cart]

I have a EZGO TXTE-48V golf cart. It will suddenly stop if I give it 20 to 30 seconds I can go again This is sporadic some days not at all other days every 45 seconds to 1 minute of driving. I have a sprayer when it is hooked up it is worse. I have replaced the charger receptacle ( old one was burnt), battery cables, 48 volt solenoid ( when I was replacing the cables I found the solenoid in many pieces), sent it to shop for new batteries, replaced the Inductive Throttle sensor, starter ignition key switch, forward reverse switch, accelerator pedal micro switch, sent to shop again they replaced a connector to the ITS. I actually just got it back. Just looking for ideas. I am ordering another ignition switch. Thank You.

[CW Cart]

Installed the ignition switch. The controller has been replaced. It is sporadically stopping. I don't know that a motor would cause this issue. It would seem a motor issue would be more consistent. Maybe the wiring harness?

[golfcartg]

What you're describing sounds very much like a voltage drop or thermal shutdown scenario especially how the issue gets worse under load with the sprayer connected. Even with new batteries, if there's just one battery underperforming or mismatched battery in the pack, it can cause the system voltage to drop too low during acceleration or sustained use. When the voltage falls below the controller’s minimum operating threshold even briefly, the cart will cut out to protect itself. After sitting for 20-30 seconds, the voltage rebounds just enough for it to operate again, but then it repeats the cycle under stress.

This kind of sporadic stalling is classic behavior for a system reacting to a voltage sag or thermal limit being triggered in the controller. The best way to confirm this is to connect a digital voltmeter to the main pack (with alligator clips so you can drive safely), and watch what the voltage does under load, especially when the cart is pulling hard or when the sprayer is engaged. If it drops below 42V even for a second, the controller might be shutting down to protect the system. Next, carefully feel around for any hot wires or components. This can save you a lot of guesswork and help you zero in on whether it's truly electrical drop or something more temperature related. Additional addons like oversized tires, extra weight, or driving on hills can also push a system that’s already close to its limits and make any weak links more noticeable as well.

[golfcartg]

By the way, if your current cart is a sepex system, that's great for general cruising and perfect for neighborhoods or light recreational use. But if you're using it more like a workhorse pulling sprayers, hauling loads or dealing with uneven terrain it can start to show its limits. That’s where a series system really shines designed for raw torque and consistent pulling power especially at low speeds and doesn’t bog down as easily under heavy load. If that sounds more in line with how you're using your cart day to day, it might be worth taking a closer look at purchasing a cart with a simpler series setup. Here’s a thread that lays out the differences