01-18-10, 12:22 AM
I have a 71 deville with a 472. I had this same problem a month ago, the car sat about 3 weeks and when I parked it nothing was wrong. Then I started it up to move it, drove around town for a while and the GEN light came on. I parked it at home and later on when I tried to start it everything worked EXCEPT the starter. Lights radio windows horn heat EVERYTHING but then when I turned the key I got nothing. After it sat about a week I towed it off the street into my garage and for the heck of it I turned the key and it started. It's been very cold lately so I never addressed the problem. Yesterday I started it up, moved it back into the garage and shut it off, the GEN light comes on very dim when I turn the key to the ON position and when the car is running it stays on and is normal brightness. Now I still have the dim light when its in the on position but when I turn the key it turns off and I hear nothing, no click no anything. I checked the wiring at the starter and it looks good. I jumped the solenoid terminals and the starter came on. So correct me if I'm wrong but I believe the purple wire that goes to the starter is the one that turns it on, so when you turn the key to the start position it should read 12V. I put the + probe from my meter in the terminal where the purple wire goes and put the - probe on the negative battery terminal. Had someone hold the key in the start position and I got nothing. Again I'm not sure if I am correct about the wire, but I remember doing something of this sort with a chevy a few yaers back and it read 12V only with the key in start position. Would a bad ignition switch cause the GEN light to be on? I'm thinking its that or the starter solenoid itself. I had the alternator tested and it is fine, battery has 12.4V. I would really like to fix this now that it has gotten warmer outside. What do you guys think? What else should I test? Or do you think one of my assumptions is correct? Any help is greatly appreciated!