Q: Car won't turn on without jump, new battery, checked alternator, when on make a loud ticking noise

asked by on

My car will not turn on without a jump. I've recently changed the oil , new battery , checked thealternator , and changed the water pump. When it's on it also has a loud knocking noise coming from the engine. The battery saving keeps coming on so air and radio are usually off

My car has 80000 miles.
My car's transmission is unknown to me.

You may have a failing voltage regulator that could be allowing the alternator to supply too much or too little amperage to the battery resulting in the battery never maintaining a consistent charge as it is designed to. The voltage regulator is a unit that regulates the charging of the battery by the alternator. When the voltage regulator is not working properly, this may result in the alternator allowing too much power to be delivered to the battery resulting in damaging wires and prematurely sometimes destroying the battery. A common sign of this is usually the acid inside the battery boiling causing the battery to swell. You may also smell a bit of smoke due to things potentially getting too hot. In other cases it may result in the alternator not supplying enough power to the battery, resulting in undercharging the battery or not charging it at all. I would recommend having an expert from YourMechanic come to your location to diagnose your vehicle’s charging system.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Car won't turn on without jump, new battery, checked alternator, when on make a loud ticking noise

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: What is a normal sitting at a light coolant temp. Been going up to 218

Normally, the indicator (or pointer) on the engine temperature gauge should be in the "center", or lower. If your cooling gauge has numbers, the acceptable operating range is 195 to 215 degrees. Above or below that range, in normal engine...

Q: Car won't start after overheating - 2013 Chevrolet Cruze

Hi there. The main issue that occurs when an engine overheats is that excessive coolant sprays on critical electrical components and reduces the vehicle's ability to start after it overheats. However, in some instances, if the engine was damaged due...

Q: How often do i change the oil

Your vehicle has an engine oil maintenance reminder system to let you know when it's time to change the engine oil and filter. For the 2011 Wrangler, the allowed interval for oil changes depends on your unique driving habits and...

Related articles

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 Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.