Roger Daisley wrote: > When I first begin driving in the morning, I must depress the > accelerator pedal twice to get power. The first press is like > a "prime" ... nothing happens. Second press and I move out. > From then on, usually, it works as advertised, EXCEPT: Every > once in a while, while waiting for a stop light, the same > thing happens again. The light turns green, I press the pedal > .... nothing. Release and press again - off we go. (While > waiting, the accelerator fully released and main contactor > opens.) > > Very puzzling. Very interesting, too, on an up-hill start and > I start rolling backwards, expecting power to move forward.
It sounds similar to a problem I had - you would occasionally press the accelerator and get only a "bump" forward, and then nothing until you tried again. It was also voltage related, and was worse on a full charge. It got worse and worse while I checked the external possibilities (bad pot / potbox switch or wiring, potbox switch operating at too much pedal) - in the end I found a badly soldered op-amp on the reversing board. Fixing that cured it for a while, and then an almost identical symptom came back! The "plug" trimmer on the control board had become intermittant, despite never having been adjusted. The other possibility in your case is that maybe there's high resistance sometimes when the contactor closes - might be worth checking. So, I hope it's something external. Good luck! Evan.
