shocking control box

[mattrchase1]

when i turn my key to the off position, the engine keeps running and the control box becomes energized and gives a pretty good shock. Im assuming the leads in the key switch are not disconnecting properly. also, this is a new box which initially had a high oil temp buzzer which was taken out of the circuit and there are a few exposed wires inside, none touching the box though. Can anyone give me alittle insight on this?

 

[MadeCoolCom]

Re: shocking control box

Sounds like the kill wire(wire that used to turn off the engine)is shorting out in there<br />somewhere. If the engine is suppose to shut off by using the key then it could be a bad switch or a bad ground to it or wired the wrong way. On my engine the kill wire is to a button I push to turn off engine. You need to find where the kill wire is and make sure is connects to a good ground when it makes connect to the switch that turnes off the engine.

 

[mattrchase1]

Re: shocking control box

thanks for replying.<br /> the kill circuit wire is the black one with yellow stripe and just by my inspection it seems to be grounded back to the engine correctly. There is 2 kill wires and one is cut! when i got the new (used)control box put in everything was working fine but that was a month ago. the key switch seems fairly new but when i turn it off it feels alittle harder to turn(only when this phenomena occurs though)any other time it works fine so maybe its the switch. A good friend of mine is an electrical engineer and he's going to take a look at it tonight. thanks for replying so quickly. Any other advice would be greatly appreciated.

 

[CharlesW]

Re: shocking control box

1. You should not have any exposed wires in the control box. If they are not being used, they should be taped so they cn't touch each other or any metal parts.<br />2. My key switch housing is plastic and would not cause a short to the control box. Yours is probably the same.<br />3. The high temp alarm should not have been disconnected. Even if someone has decided to remove the VRO system, the high temp alarm should be retained.<br />4. The fact that it worked for a month sound like a wire has come in contact with the control box because of having the insulation worn off or being left bare. Remember how tight everything fit in that control box? Everything has to be in the right place or you are going to have a problem.<br /><br />Charles

 

[mattrchase1]

Re: shocking control box

Figured out what was wrong. Everything in the control box is fine. We found that this only occurred when the engine was hot. We're assuming that the ground back to the engine was heating up and short circuiting. This would cause the box to be grounded when i opened the circuit up (turning off the key) so as a temporary fix we ran an extra wire from the ground on the switch, back to ground on the engine. This should take care of the problem. thanks for the advice.<br /> matt