Battery & Electrical Repair & Maintenance

Catalytic converter

• How come there is so much anit-pollution junk on my engine?
• How can I tell if the catalytic converter is working properly?

Circuitry basics - switches and fuses (see also wiring diagrams)

• My car keeps blowing fuses. Do I need a larger fuse?
• My car has two fuse panels, one under the instrument panel and one in the engine compartment. Why?

Charging system, alternator, generator

• How do I know if my alternator is charging properly?
• My mechanic says I have a bad voltage regulator and so need to replace the alternator. Why?

Battery (see also Electrical - Battery)

• How can I tell if my battery is low and needs to recharged?
• My battery keeps running down. Do I need a new battery?
• How can I tell if my battery is good or bad?
• Does a replacement battery need to be the same size as my old one?
• Is there any danger to me or my vehicle if I give someone a jump start??