Skip the auto shop - Our mechanics make house calls

Q: Battery wont stay charged

asked by on

1973 Ford Thunderbird there might be a slow draw with the battery when i have the connection hooked up the battery dies so i have to unplug the battery time i get out i have replaced the battery and alternator and it still dose the same thing then i tested the alternator when the car was on and it was reading 12.6 volts

My car has 141000 miles.
My car has an automatic transmission.

A: It appears the alternator is providing the ...

It appears the alternator is providing the correct charge (within range) to the battery at 12.6 volts. This also suggests that the voltage regulator is working properly. You may have a slight power draw coming from somewhere in the car. Try checking things like interior lights, stereo connections, trunk light, under hood light and anything else that may have a small bit of power coming from it that may otherwise get left on when leaving the car overnight. You may also have a grounding issue somewhere as well. If you need assistance, a certified YourMechanic technician can come to your location to perform a battery will not hold a charge inspection on your vehicle and help diagnose this issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Battery dies unexpectedly, turned off the car, went to turn it on 5 min later and battery had died.

Hey there. The battery may not have been recharged between each stop if you were driving at night with heavy accessory load like the A/C and lights with the radio on. Each time you stop and shut off the vehicle...

Q: Lost all power to the car

Turning on one additional switch creating a loss of all power suggests you have a short somewhere in your system. The additional power draw that the extra fan is creating puts an additional load on voltage being supplied to other...

Q: I just installed a new battery, and now the gear shifter, windows, lights, and radio won't work

If 1) the battery is fully charged; 2) it was installed correctly (i.e., at no point in time were the positive and negative connections reversed damaging the powertrain control module [PCM]); and 3) the wiring was not damaged and none...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...