Q: Q: Ignition fuse keeps blowing

asked by on

My car keeps blowing ign fuse . We've checked all the wiring nothing touching. Changed the alternator and the fuse still blows. Just wondering if it could be the ignition switch or maybe the starter.

My car has 111564 miles.
My car has an automatic transmission.

You had a good start by tracing the wires and making sure they were clean, dry, and not damaged. To make sure you covered the entire circuit, I recommend you use an official wiring diagram to check this. It is very likely there is a short somewhere in the system.

If not in the wiring, there could be an issue with the fuse box. This is unlikely if you are not having issues with other circuits. The starter can also cause this to blow.

If the starter is failing, especially the starter solenoid, a power surge may be being sent to the fuse and blowing it. You can have your starter bench tested, but they wont test if the starter is powerful enough to actually turn over the engine. It only tests if the starter will spin. The fuse is being sent a current that is too strong for it, and you need to find what is sending that signal.

If you’re unable to pinpoint the issue yourself, I’d recommend having the car looked at by one of our mobile technicians to diagnose your electrical issue and make the necessary repairs to your car.

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. Q: Ignition fuse keeps blowing

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: How to fix the wiring on my alternator?

Hello. The system is burning the wire connector due to the connection being weak and loose. The wire got hot and melted the first time due to a loose connection causing heat build up. You should also check the battery...

Q: 2005 Honda CR-V: Oil or VSA problem

Hi Brad. Thanks for sending the question today. I think you might want to read this article about the P-2646 OBD-II trouble code, as there are several possible sources and repair solutions. Most of the time, the issue is not...

Q: For some reasons the trip odometer on my 2014 Altima's

The first thing I recommend is to check all your fuses to ensure they are all good. It could also be an issue with the IPDM (Intelligent Power Distribution Module). The dash module needs voltage when the motor is off...

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...
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.