Skip the auto shop - Our mechanics make house calls

Q: After tune up, alternator ruined by oil leak

asked by on

I went to a certified mechanic for a tune-up: brakes, power steering, spark plugs, engine mount, and tranny mount. After these things he explained that the alternator had gone out due to an oil leak from the power steering pump. So I had him replace that. When they finished and started my car, it began burning a 120v fuse. So next I go to an electrical mechanic and was told that the new alternator had a loose bolt and was not properly grounded. They fixed that. Car was performing excellently until 2 weeks later when I left my car with hazards on for over an hour. When I started the car, things were fine until I began to drive and I noticed the wipers independently ran one time, then the dash brake light came on. I checked the 120v fuse and it had burned. So back I went to the mechanic’s shop. He replaced the alternator, but now fuses are burning like an electric lighter. When my car turns on, it starts to burn the fuse. I can actually watch it turning red! There is a 13-14 volt charge from the alternator and this car is all electronic. Can you tell me what to do to permanently fix these problems?

A: Hello. The issue you are having is likely a...

Hello. The issue you are having is likely a ground wire fault that keeps blowing the fuse. Fuses blow when there is too much current for The ground circuit to release. Electricity is energy. Energy can’t be created or destroyed, only transferred. Being that the electrical current can’t release through the ground wire circuit, the electrical energy will transfer to thermal energy. Which is why you see the red glow. The whereabouts of the ground wire will have to be investigated in person. It sounds like the technician that is working on the car may not be fully repairing the problem. If you would like to have the car checked by another technician, a qualified professional from YourMechanic can come to your car’s location to diagnose any electrical issues and determine what should be done.

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

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: Traction Control System

As you know, the VSC light relates to the vehicle stability control system otherwise known as the traction control system. The traction control system monitors the steering stability of the vehicle and engages when loss of traction has been detected....

Q: I have bled the power steering several times and still groaning.

These power steering systems can be VERY difficult to bleed and require a vacuum be held on the reservoir before even turning the wheels or starting the engine. A special tool is required to be attached to the reservoir which...

Q: Battery grounded power wire - 1980 Chevrolet C30

Your first starting effort probably created enough heat within the starter motor to melt the windings, shorting them. This just causes more power to be directed to an already hot starter motor. Kills the starter. Take it out and have...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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.