You probably have a defective semi-conductor in the alternator voltage regulator. I can suggest an easy test the regulator operation. There is a certain risk of injury when performing this test, please contact us directly for details. DMC Joe / De Lorean Services / <dmcjoe@xxxx> Web Site: <www.deloreanservices.com> ----- Original Message ----- From: Joe Palatinus <jpalatinus@xxxx> To: <dmcnews@xxxxxxxxxxx> Sent: Tuesday, February 29, 2000 12:37 PM Subject: [DML] Hot start Voltage problem > Ok, this takes the cake. I will be really impressed if anyone has had the > problem I am now having... > When I start the car cold, I can drive it indefinitely, and the voltage > will stay around 13. If I turn off the ignition for any length of time, > and turn it on while the car is still hot, The voltage drops to nothing, > and the battery light comes on. I have a motorola alternator, which I had > tested by an electrician who said it works perfectly. Please advise me on > where I should start to look for the problem. > Joe Palatinus > VIN 6808 > 17167