The Ford Barn

Wedgetail · 05-25-2024, 04:03 PM

I took my ‘40 Deluxe out for a quick drive to try out the wheel alignment. After about 1/4 mile it started running really rough, lost most of its power and the battery gauge pegged high, and the coolant temp pegged low. (Oil and gas gauges were ok). I limped home, and in the garage, revving the engine causes the battery to get over 8 volts (and the headlights brighten with RPM). Until recently, I wasn’t even convinced that the generator was charging the battery, and I’ve never seen anything over 6.3V. Why all the voltage?

05-25-2024, 04:03 PM	#1
Wedgetail Member Join Date: Dec 2021 Location: Cambridge, MA Posts: 30	Overvoltage I took my ‘40 Deluxe out for a quick drive to try out the wheel alignment. After about 1/4 mile it started running really rough, lost most of its power and the battery gauge pegged high, and the coolant temp pegged low. (Oil and gas gauges were ok). I limped home, and in the garage, revving the engine causes the battery to get over 8 volts (and the headlights brighten with RPM). Until recently, I wasn’t even convinced that the generator was charging the battery, and I’ve never seen anything over 6.3V. Why all the voltage?