Need a lot more details but it sounds like there might be a charging system problem. Have the generator load-tested with a tester that measures "ripple". If ripple is high, you will also find the most output you can get is one third of the generator's rated capacity. That isn't enough to run the fuel pump, ignition system, and all of the computers. Computers are very sensitive to low or unstable system voltage and will do weird things.
January, 12, 2012 AT 4:27 PM
I've seen something similar in my car and it took a while to diagnose and isolate but there are 2 small accessory relays on the passenger side fuse box that can eventually go bad and wreak havoc on the instrument cluster lights and sometimes the radio.
The relays are unforuntately on the back side of the fuse panel so you have to remove the glove compartment and use bent needle nose pliers to be able to reach and pull them out. One relay is always latched when iginition is on and it sometimes it unlatches intermittently based on humidity or car pitching forward or backward (acceleration, etc)
January, 12, 2012 AT 11:19 PM
Thank you lithiumus. Sounds like that could be the problem.