Skip the auto shop - Our mechanics make house calls

Q: Starting issue

asked by on

I bought new battery and new alternator and in order to start my truck I have to hook it up to a battery booster? Any ideas on what else could be the issue

My car has 350000 miles.
My car has an automatic transmission.

New batteries are not always sold fully charged. Your battery might simply need to be charged. If the battery is fully charged and you have to piggy back additional power to get the starter motor to run adequately to start the car, that means that the starter circuit may have high resistances in it, including bad grounds and/or the starter motor is failing (the motor itself could have high resistance and draw too much current, more current than your standalone battery can supply). Starter circuits can be checked visually for obvious bad connections and corroded terminals. The standard test for adequacy of the wiring is a voltage drop test under load. If all the wiring checks out, and your starter motor is incapable of turning the engine over at the required RPM, then the starter motor is condemned and replaced. If you desire that a professional Mechanic go through these steps and resolve this for you, simply request a no start diagnostic and a certified mechanic will be dispatched promptly.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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

Get a quote

What others are asking

Q: Car won't turn over

This may potentially be a faulty starter solenoid or relay depending on the symptoms. The starter solenoid is located on the starter and has internal electrical contacts that transmit electricity to the starter. When this fails, it may cause a...

Q: Advance tracking light is staying on

The Advance Trac system relates to the traction control system in your vehicle. The traction control system monitors the steering and stability of the vehicle and engages when loss of traction has been detected. This is done by the use...

Q: My car sparks and has fuel but no firing - 1987 Ford F-150

Hi there. In situations like this when you have fuel and spark, the logical step is to check ignition timing issues. In many cases, the crankshaft position sensor or cam sensor can cause a timing issue which will cause the...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...