1999 txt won’t move!
 

I’m new here and you guys have been a wealth of information just from reading through thread from people having a similar problem. If this is in the wrong place, just let me know!

Here’s my issue. I just purchased my first used cart about a month ago and put batteries in it the day I got it. Up until last weekend, everything was working perfectly... and then it didn’t. The just stopped in the middle of a fairway. Long story short, I had the guys at the course tow it back to the club house and I came and loaded it up and took it to my shop. (I’m an automotive mechanic by day). I’ve checked everything I know to check going off of other posts here and I’m down to replacing the ITS throttle sensor. I talked to a local cart technician and he said that in 20 years of working on them, he’s never actually had to replace one, so now I’m hesitant.

I have 6.3 volts from each battery. 37.96 volts from the battery pack. The solenoid clicks when the pedal is depressed. I checked voltage from the B- terminal on the Curtis controller to the white pin on the connector and have almost no voltage change from pedal up to pedal all the way down. The guy I talked to said I just need to replace the controller, but after 6 hours going through other peoples threads on this forum, I think it could be the throttle sensor.

Is there anything else I can check to be certain? I have a sensor coming from amazon, but I don’t want to waste the money if it’s going to turn out to be the controller. If I have to replace the sensor just to rule it out, then I guess I’m just out 30$ and that’s fine, but id like to avoid that if possible.

What do y’all think? You guys seem way more knowledgeable than the guy just trying to sell me a controller.


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Re: 1999 txt won’t move!
 

The controller supplies the ITS voltage. The ITS will malfunction when wet.
See troubleshooting at the top of this section in STICKIES

Re: 1999 txt won’t move!
 

Having gone through this very recently, make sure you check the ITS voltage at the sensor, at the controller, and at the controller with the sensor disconnected. That will let you know if it is the sensor or the controller. Is it a stock controller?

Here is my thread with a similar issue with lots of good advice and troubleshooting tips.

FYI: I wasted $30 on a sensor. I will ship my old one to you for shipping cost if you want one to try out.

Re: 1999 txt won’t move!
 

I'm not an expert by any stretch but one thing to check is the solenoid. Use a meter and check voltage on each side of the solenoid after it clicks. I had a bad solenoid that was clicking like normal but when I pressed the accelerator the voltage under load was dropping out to the low 20's on the controller side. It turned out the coil in the solenoid was bad

Re: 1999 txt won’t move!
 

My stock '98 solenoid started melting at the inner contacts, due to years of abuse. It wasn't designed for what I was asking it to do. It worked sometimes, but became intermittent.

I also had an intermittent problem with the Molex connector between the throttle box and the wiring harness. Usually I could just unplug it, spray contact cleaner in it, and repeatedly plug/unplug/plug and it would work for months. I finally got tired of it, and cut off the connectors and soldered and heat-shrinked them.

Re: 1999 txt won’t move!
 

Sorry guys, I forgot to mention that the cart has a brand new solenoid. The guy I bought it from had an extra (still in the factory wrapper). I put it in when all this started and no dice. I’ve been going through the stickied troubleshooting thread and trying to rule out issues. Now that I’m a member, I have access to more info so I’ll try some more tests and let y’all know what I find.


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Re: 1999 txt won’t move!
 

Did you try the Molex connector, as I suggested?

Re: 1999 txt won’t move!
 

Yeah, I checked the connector. Oddly enough, I put each lead from my multimeter on each side of the throttle switch just to see what kind of reading I got, and when set to volts, I get nothing, but when set to ohms, the cart jumps to full speed when the pedal is pressed even a little. I’m assuming that would mean the throttle switch needs to be replaced, correct?


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Re: 1999 txt won’t move!
 

Ok, I’m at a loss. It would do absolutely nothing twenty minutes ago and now after screwing around with the throttle sensor, it works flawlessly. I guess I’m going to replace the sensor and see what happens. I’m assuming that just having the sensor out and jostling around the wiring has (at least temporarily) fixed it. I’ll put new spade connectors on the wires at the sensor and replace the sensor itself in hopes that it will mitigate any future problems...


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Re: 1999 txt won’t move!
 

Are you calling the ITS the "sensor"? If so, I'd suspect the wiring before replacing a costly part. Others can chime in, but I've never heard of one failing intermittently. Getting them wet has caused problems, but drying them out usually cures that.