Q: Bubbling battery

asked by on

Replaced starter, battery, and alternator. After starting truck, general light comes on dash, the battery bubbles, and the alternator gets fried. Have replaced battery and alternator again and same thing happens. Could it be the ECM?

My car has a manual transmission.

Hi, thanks for your question. This may be likely related to the voltage regulator. This is a unit that regulates the charging of the battery by the alternator. When this is not working properly, it can undercharge or overcharge (this sounds like your issue) the battery. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. Bubbling battery

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: I have a delay from ignition "on" to relays turning on and dash lights illuminating

Your car may have an intermittent problem with the ignition power relay not making contact or the ignition switch electrical connections are not making good contact. A technical bulletin says to hold the throttle part way open on these...

Q: Problems with the DIC settings and using its features

Your vehicle model has many technical bulletins that pertains to wiring issues with pins and connectors to various modules and control units in the vehicle. This issue is one that is hard to track down, since it is an intermittent...

Q: Fuel pressure regulator

The fuel pressure regulator and fuel filter is mounted on top of the fuel tank pump mounted in the fuel tank. It is recommended to be replaced anytime the fuel pump is replaced.

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.