1995 SPX VTS - Help

[mustanglx]

Hey everyone,

Just joined after weeks of reading some awesome posts here.

I recently picked up a 95 SPX 657 Rotax. Motor runs good and the seller gave it to me with VTS not working and No gas gauge working. Fuel Gauge is now working after reading a few fuse threads.

Ive tested the VTS and its clicking and relays sound good. I tested the output to the VTS Motor and I get the 12 V and - 12V up and down. The motor doesn't spin, it give a small click in each direction. I took apart the motor from the gear box and it does the same thing. Then I cleaned the brushes and carbon and it gave me a few minutes of back and forth without the gearbox. I assumed it was the gearbox being a bit stiff but after loosening it and trying it, same clicks in either direction. It now doesn't spin without the gearbox again.

I ran the Motor without the gearbox via just battery and it ran no problem. Can I assume that if I have the 12V coming from the VTS module, it is the motor?

Thanks

 

[mustanglx]

I reassembled the VTS Motor to the gearbox of the VTS Motor and it start to spin through the VTS module, then suddenly went back to the click. I still continue to get the 12V and -12V output to the motor but now am not sure if its the Motor or the module. I keep seeing threads with a 7.5amp fuse but I dont have any 7.5 amp fuses in my control block. 15, 5 and 10amp.

 

[etemplet]

For my type of riding the VTS is something I never use. I get them working when I can but I would be quite happy to lock it in the middle, pull the fuse and never use it. Check your fuses and verify the amperage on the wiring diagram. Good luck.

 

[POPPS]

They are very expensive!

 

[ruznek]

I've had a similar issue where motor would sometimes work and sometime wouldn't.
Cleaned the brushes and re-greased the gearbox, same thing.
Turned out my 12V supply to the module was loose/ kinked and it would create a voltage drop to the relay. I even bought a new motor before i figured it out so now i have a spare one. Measure the voltage while motor is connected and see if your voltage drops substantially , that would indicate worn contacts on relays or lose /kinked 12V wire to the module. Module has 2 12V wires, one for the logic on board and one for supplying the relays to the motor.

Connect the motor straight to battery with gearbox to test it, if it works, its your relays inside the module, or 12V supply to them. They can be replaced but its time consuming.

Here is my write up when i fixed my module

VTS Trim actual fix