Q: Replaced alternator and battery in car that isn't holding power.

asked by on December 21, 2015

Car is not holding power. I just replaced the battery and alternator. What's wrong with my car?

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

How do I turn on the front row map lights?
The front row map lights are located above the two front seats, and provide cabin light for the driver and front passenger. To turn these lights on, press the outer edge of each light. Press the edge again to turn...
Front wheel noise when turning the steering wheel
Normally, that is from worn outer CV joints (https://www.yourmechanic.com/article/is-it-safe-to-drive-with-a-damaged-cv-joint). It's a front wheel drive car, it generally means you need new CV joints. The way the things go today is you better just replace the whole driveshaft. Because they make...
Battery, alternator, fuses, cpu....
Hi there, thanks for writing in about your 2013 Honda Accord. The conditions may be normal if you run too many accessories when at idle. First, have the alternator tested to see if it can put out the maximum amperage...
The car will not move when you shift it into Drive. It works fine when you shift it into Reverse.
Hello there. Like you mentioned, many different faults will cause your 2001 BMW 330i to not move when it is put in drive. The most common faults are faulty shift linkage, shift cable broken (https://www.yourmechanic.com/services/shift-selector-cable-replacement), torque converter, low transmission fluid...
Possible oil leak in my 2009 Jeep Wrangler
This may be the result of an oil leak coming from many different places. The good news is that they are small leaks which are usually not too critical, but should still be looked at to be sure they do...
Rough idling
Hi there. It's possible that your throttle position sensor is the cause of your idle issues. If you cleaned the throttle body and that helped, it's also possible cleaning the fuel injectors and ERG valve would also improve this situation....
Temperature sensor
Hi There, It sounds like you may have a faulty coolant temperature sensor (https://www.yourmechanic.com/services/coolant-temperature-switch-sensor-replacement) which may be providing a false reading to the temperature gauge. When the car is cold, it relies heavily on the engine coolant temperature sensor. If...
3.0 l honda interference or non
Yes this engine is an interference motor and the likelihood of bending valves if goes out of time on the camshafts.
Should i change my cooler water each year ?
If it's the engine coolant that you are asking about, every other year should be quite sufficient. When you decide to have that done contact Your Mechanic. They can send a technician to your home or office to replace your...

Related articles

How to Unlock a Steering Wheel
When your steering wheel (https://www.yourmechanic.com/article/3-essential-things-to-know-about-steering-wheels-and-covers) locks it is usually at the worst time. The good news is that it is an easy fix....
How to Remove, Install, and Adjust Ignition Timing
Ignition distributors help spark the gas and air in the engine. Worn distributors need to be removed to be cleaned to maintain proper ignition timing.
Industry News for Automotive Techs: October 29 - November 4
Toyota and Getaround's smartphone key, future McLaren cars, DMCA car hacking, a fire at Ford's headquarters, and Chevrolet's SEMA 2016 show cars.