On my electric FTX carnage i have noticed that sometimes when i put the throttle on full it just cuts out? OR will go into reverse and stop? Also at random times the car will make a single quick beep and the engine will stop working.It sounds like it could be because of low battery but it never used to do this and sometimes does it mid way trough battery life?

Any help would be greatly appreciated!

Thanks.<br type="_moz" />

Sounds like the ESC. Replace it with a cheap one first to see if its really at fault.

Would you know of a cheap ESC which i could use? What is the difference between a cheap and expensive ESC?

A cheap one is just cheap. Here is an okay one; http://www.amazon.co.uk/7-2-16V-Volt...ds=brushed+esc