OK, this is worrying me a little. When I turn the ignition to "on" my engine light blinks 1-2 times a second. When I start the engine the light goes out. It starts and runs fine. It had sat unused for about 6 weeks and I had to jump start it the first time. Any thoughts? I have been sorting out a problem with my rear O2 sensor throwing a code recently (?? P0171 ??). At least I think it is my O2 sensor even though I have replaced it about 5-10k ago. I have not had much time to look into this lately. Thanks.