Skip the auto shop - Our mechanics make house calls

Q: What was the device that prevented my car from starting and blew a fuse? Is it safe now?

asked by on

So, my car stopped while driving it. Then it wouldn't start and only lights and radio came on. I had a mechanic friend look at it and he found a blown fuse. We used a jumper and tried to start the car. It cranked but was still struggling to start. My sister noticed smoke coming from the left side. We discovered that it was coming from two disconnected wires attached to a little black box. My friend took the device out, taped the wires with electrical tape and tried to start the car. It started easily. We replaced the fuse and now it starts. What was the device and is my car safe to drive?

My car has 98000 miles.
My car has an automatic transmission.

A: This sounds like an aftermarket addition, w...

This sounds like an aftermarket addition, which are often wired in pretty poorly by people that install them. I would suggest having the car inspected by a qualified technician, such as one from YourMechanic, before doing any long drives with it. They will be able to inspect your electrical system and diagnose why your car stalled in the first place. Once this is done, the necessary repairs can be made to ensure that the car is safe for the road.

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・Save up to 30%

Get a quote

What others are asking

Q: Loud humming noise

The bearing or brushes in your alternator are likely going out. You could also have another issue in your belt drive system causing the noise and lack of charging. A visual inspection of the drive system, a stethoscope to listen...

Q: Blower or heat and air conditioner are not working? Relay fuse

The blower fuse is a 40 amp fuse located in the engine compartment's fuse box. The blower blower is controlled by the blower controller/resistor next to blower in the housing. The A/C control head controls the resistor controller for the...

Q: Super Seal for A/C with no leaks?

I would not add anything until the system is checked to see if it is full and if you have another problem. You may have a compressor that is bad or leaking, in which case Super Seal may not work...

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 Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...