Q: Batteries at 13v go dead after trying to start it

asked by on July 04, 2016

The batteries are reading 13 volts hard start it sounds like they don't have enough voltage in them to start the truck then after I try and start it they read 8 volts

My car has 130000 miles.
My car has an automatic transmission.

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・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Car feels like it's going to stall.
This is a common symptom of a misfire (https://www.yourmechanic.com/services/engine-is-misfiring-inspection) or potentially a faulty idle air control valve (https://www.yourmechanic.com/services/idle-control-valve-replacement) which when faulty, can cause the misfire to happen due to an improper air/fuel mixture being supplied to the engine. The idle...
My car will crank but will not start.
Hi there. If your engine was running just fine and then after sitting for 15 minutes and then all of a sudden the engine will not start up but it cranks, then there could be an issue with the igniter...
why is my cruise main indicator light on and and it is gray? and how do i turn it off??
Hello there. When the cruise control light is illuminated in this manner, it indicates a problem somewhere within this system. It could be as minor as a stored error code in the ECU of your vehicle that simply needs to...
We replaced our radiator today and now white smoke is coming out of the exaust and its ahaking which it was not doing before. I
Hi there. White smoke coming from the exhaust is an indicator of coolant being mixed with the engine oil and being burned in the combustion chamber. Typically a blown head gasket will cause this to occur, or a crack in...
Transmission additive to stop pump seal leak I don't want to spend $750 on repairs will a transmission stop leak fix it
You can certainly use transmission stop leak, however depending on how bad the leak (https://www.yourmechanic.com/services/transmission-fluid-is-leaking-inspection) is or the amount of pressure coming from the leak, this may be only a temporary fix. I would suggest having a professional from YourMechanic...
2003 lincoln navigator motor 5.4 does fit in a 2003 ford expedition 4.6?
The hardware and software of the computer (powertrain control module) and transmission control module (TCM) in the Expedition will only work with your present 4.6 L engine. If you change the stock engine to one that is not a catalog...
I have a g35 04 the car over heated when I was driving and I added coolant and tried to turn the heater on as well but it wouldn’t
Hi Merks. Thanks for contacting us today. Typically when your car overheats and there is no heat coming from the heater, it's due to an obstruction of debris inside the heater core, or a damaged heater core itself. It could...

Related articles

What Is Key-Off Battery Drain?
Many Many things in your car continue to work even after your vehicle is turned off – radio presets, security alarms, emissions computers and clocks are just a few. They continue to draw power from your car battery, and the...
2012 Ford Mustang vs. 2012 Dodge Charger: Which One Should I Buy?
Technically these two vehicles have wildly different classifications: compact for the Ford Mustang and large car for the Dodge Charger. However, who would consider either one anything other than a muscle car? These cars are meant for speed, fun, and...
Top Five Selling Cars in Colorado in 2012
Colorado Colorado offers a varied climate depending on where drivers are located. Those in lower elevations see plenty of sunshine all year, while those in the mountain areas can see as much as 300 inches of snow. Due to this,...