Q: 25 amp fuse blows after it's charged
The 25 amp fuse sitting on the positive lead that comes out from the rectifier, instantly blows after it is changed. This causes the battery not to charge when the motor is running. For the fuse to blow, the engine doesn’t have to be running. I decided that there is probably something wrong between the fuse and the battery. At one time, I found that the battery had been connected with the positive pole to grounding and the negative pole was where the positive should have been. After that, the main fuse blew and it was replaced. I’ve tried replacing the battery, but that didn’t help. What should I do to fix this and do you have a wiring diagram or know where I can get one?
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
What others are asking
What does the Key-in-Ignition chime?
There is a chime that will alert you when the key is left in the ignition. This chime is helpful to remind you to not lock your keys in the vehicle. To understand the Key-in-Ignition chime. The Key-in-Ignition chime will...
How do I lock and unlock the doors with the key
You can lock and unlock all of the doors in your vehicle with the key. To lock the doors, insert the key into the lock on the driver’s door, and rotate the key counterclockwise until you hear the doors lock....
dynamic curving lighting stopped working - 2014 Volkswagen Tiguan
Hello. Volkswagen's dynamic curved lighting does not utilize an extra bulb despite all the confusion out there on the topic. The headlights physically swivel 5-15° allowing drivers to see up to 90% better around corners. VW uses servomotors controlled by...
Service Brake System Light beeps on for a minute then turns off
There is a problem with your brakes or the ABS that is turning this light on. A code reader should tell you what specifically is the problem. Most likely, a wheel speed sensor (https://www.yourmechanic.com/services/wheel-speed-sensor-replacement) is dirty or has failed. This...
Loss of power once I hit 70-80 mph
Hi there. Check the fuel pump and make sure that its working. Check the fuel pressure on the fuel rail and see if there is a loss of pressure. Its common for the fuel pump in the Silverado 1500 models...
I have excessive smoke coming from exhaust when I tow my trailer.
The cloud of smoke is the engine running colder than normal or having too much fuel in the engine. Check the fuel injection system and see if the fuel injectors are firing correctly. If the fuel system is working properly,...
My car is loud when driving (sounds like I have no exhaust) and it takes about a min to get up to the speed limit then goes faster
Hi There, It sounds like you may have damaged your catalytic converter (https://www.yourmechanic.com/services/catalytic-converter-replacement) when your car was stuck in the snow. It may have possibly resulted in the converter housing itself being caved in causing it to not flow properly...
Should I replace my spare tire?
You should have a tire store or dealer inspect the spare tire for damage and excessive wear and the need to replace it. If you drove over the 50 mile limit and over speeds limited by tire then without seeing...
Related articles
How Long Do Car Lightbulb Fuses Last?
Like Like other electronic systems on your vehicle, your headlights have a fuse that ensures operation, but also protects against voltage fluctuations. A fuse is really nothing more than a bridge – there’s a small piece of metal that connects...
Can a Car Battery Freeze?
Cold temperatures can make it hard to start your car, and extreme cold can freeze a battery. Use a battery heater to make your car reliable in winter.
Symptoms of a Bad or Failing Exhaust Manifold Gasket
If the engine is noisy, causing performance issues, or smells burnt, you may need to replace the exhaust manifold gasket.
Browse other content
Estimates
Services
Maintenance