The Ford Barn

soundquest · 09-08-2020, 10:04 PM

The generator on my 55 T-bird is not charging (6V ground-negative). If I disconnect the battery while the engine is running, the engine dies. My batt in the morning (fresh off of the charger) reads 6.6 volts. With the engine running, it reads 6.3-6.4 volts. I have polarized the generator properly, cleaned the voltage regulator contacts, and made sure all the connections are tight. Possible wire breaks (original wiring)? Bad generator (gen. was rebuilt only 3K miles ago)? Bad voltage regulator? Blown voltage regulator resistor (aren't they on the underside of the regulator)? What is the proper method for testing the generator (at the generator posts) with the engine running? Thanks.

09-08-2020, 10:04 PM	#1
soundquest Junior Member Join Date: Aug 2020 Posts: 11	Help! - 1955 Thunderbird 6V (ground-neg.) generator not charging The generator on my 55 T-bird is not charging (6V ground-negative). If I disconnect the battery while the engine is running, the engine dies. My batt in the morning (fresh off of the charger) reads 6.6 volts. With the engine running, it reads 6.3-6.4 volts. I have polarized the generator properly, cleaned the voltage regulator contacts, and made sure all the connections are tight. Possible wire breaks (original wiring)? Bad generator (gen. was rebuilt only 3K miles ago)? Bad voltage regulator? Blown voltage regulator resistor (aren't they on the underside of the regulator)? What is the proper method for testing the generator (at the generator posts) with the engine running? Thanks.