02 EzGo Electric Series Slows Down On Slight Inclines and Stops Running Sometimes

[buggynan]

I just bought a 2002 Ez Go series 36v electric golf cart. I say series because no run/tow switch, forward/reverse switch between riders on bench.
The person I bought it from said the batteries were replaced in Aug '09. They are NAPA specialties. It does slow down on slight inclines. Has an irritating bounce, like a tire is out of round (the back left tire is worn on the outside and inside) Tires are Carlisle Badlands 20x11-8. But the worse thing is upon driving a short distance and then stopping - it will not go forward or reverse. The solenoid clicks when the pedal is pressed down. If I rock it, especially with it in reverse, it catches and then I can move it backwards then put it in forward and go. Do you have any idea what can be causing this?

 

[rhgc]

start with checking the battery voltage...it should be good if the batteries were just replaced. for the bouncing check the air pressure in all the tires, also a tire could have a knot on it causing it to bounce. then check to make sure all connections are tight. especially on the forward/reverse switch under the seat. also check for signs of heat. could also be a bad solinoid

 

[buggynan]

Hi rhgc, thanks for the reply. I have yet to check the voltage. I do have a load tester but not a volt meter. I also have a hydrometer. I'll do this battery testing soon.
The wires on the F/R switch look good and don't move when jiggled. There is a white wire that looks brownish up by the connection on the switch. Is that a sign of heat damage?
After first posting, I went for a drive, and noticed a shhh, whirring/grinding noise coming, I think, from the back. As the pedal was fully depressed I heard it and as I let off about half way the noise became louder. Pedal completely let off, the noise stopped. Bearings?
Sounds like I got more dollars coming out the pocket, and a weekend busy working instead of riding.