Glossary / General

voltage drop

8 Episode Mentions

Too Afraid to Ask

Voltage drop is when the electrical voltage decreases as it travels through wires. Mechanics check this to find problems in the car's electrical system.

Technical Definition

Voltage drop refers to the reduction in voltage in an electrical circuit between the source and load. It is an important diagnostic tool for technicians to determine if there are issues in the wiring or connections, as excessive voltage drop can indicate resistance problems.

Hear It Discussed

"you know you could have a drop you need to check for a voltage drop I've never heard of a battery tester that says corrosion in the system"
Expert Car Repair Advice to Help You Cut Costs Effectively Live Answers Under The Hood show 19:25

"And then I would have to vaultage drop that positive cable down to the starter or as you say, if you wanted, you could jump across it."
Ron Ananian, The Car Doctor - July 18, 2026 - Hour 1 - The Risk Is In The Repair Ron Ananian The Car Doctor 30:08

"Well, I think a huge one is voltage drop, right? And it's kind of on the same topic of, you know, loading a circuit."
The Truth About Diag, Flat Rate Pay, and Shop Culture with Josh Whiteman The Jaded Mechanic Podcast 38:21