The Automotive Advice Experts You Trust To Keep Your Car Going
Under The Hood show
Under The Hood show May 6, 2026
The Automotive Advice Experts You Trust To Keep Your Car Going

The Automotive Advice Experts You Trust To Keep Your Car Going

Annotations will appear as you listen

0:00
51:43
The Automotive Advice Experts You Trust To Keep Your Car Going
Chevrolet Bel
Car

Chevrolet Bel

The Chevrolet Bel Air is a classic car, and the podcast talks about a 1965 model. The owner says they changed the engine and transmission, which means the car isn’t exactly like it was from the factory. That can change how you maintain it and fix problems.

Term

program stuff

“Program stuff” means setting up the car’s electronics so they work together. If you install the wrong computer or it loses its settings, it may need to be reprogrammed.

Term

batteries were dead

If the battery is dead, the car’s computers can lose power and sometimes lose their settings. In this story, that’s blamed for the transmission computer not working afterward.

Company

GM

GM is the car company being referenced. They’re saying some GM cars use transmission computers that can be swapped if they look the same and connect the same way.

Term

TCM

TCM means the transmission control module. It’s the part that controls shifting, and if it’s not working right, the car may shift poorly.

Term

transmission computer

The transmission computer is like the transmission’s “brain.” It decides when to shift and how smoothly it should shift based on what the car is doing.

Term

six liter engine

“Six liter” means the engine is about 6.0 liters in size. Bigger engines usually make more pulling power, and swaps may require matching the right electronics.

Term

engine computer

Your car has a computer that controls the engine. When a mechanic plugs in a scanner, it often talks to the engine computer first to see what’s working and what isn’t.

Term

communication wires

The car’s computers talk to each other through wires. If one computer can’t “hear” the other, the wires connecting them may be damaged or unplugged.

Term

power and ground

Every car module needs electricity and a good electrical connection back to the chassis. If it can’t communicate, mechanics check that it’s getting power and that its ground connection is solid.

Term

brick

“Brick” is a slang way of saying a car computer has died or locked up. When it happens, it may stop communicating with the scanner until it’s fixed or replaced.

Cadillac Escalade
Car

Cadillac Escalade

The Cadillac Escalade is a large luxury SUV. The podcast mentions it alongside other vehicles, which usually means they’re talking about similar problems or repairs. It’s the kind of vehicle people bring up when discussing issues that can happen across many big vehicles.

Term

jumpstart

A jumpstart is when you use another battery to get a dead car started. If the car’s computers don’t like what happened during the jump, they can act weird afterward.

Concept

module communication failure

“Communication failure” means the car’s computers aren’t able to talk to each other. If the transmission computer can’t communicate, the transmission may not shift until the problem is fixed.

Term

wiring harness

A wiring harness is the set of wires that connects the car’s computers and parts. If the harness is damaged, the new computer may still not work because the signals can’t get through.

Term

transmission control module

The transmission control module is the specific computer that controls the automatic transmission. If you replace it, you usually need the right one—often found by matching the part number.

Term

rodent damage

Rodents can chew through car wiring. If the wires get damaged, the car’s computers may stop working correctly, so it’s worth checking the wiring for bite marks.

Term

transmission pan

The transmission pan is the bottom part of the automatic transmission that contains the fluid. If a repair needs parts inside, mechanics may have to remove this pan to get access.

Term

park pall

They’re likely talking about the parking pawl—the part that locks the transmission when you put the car in Park. If it won’t hold on a hill, that locking part may be worn or not engaging correctly.

Term

valve body

The valve body is like the control hub inside an automatic transmission that directs fluid to the parts that make the transmission shift and hold. If something isn’t holding properly, it may require getting to this area.

Term

automatic transmission

An automatic transmission is the kind of gearbox where you don’t have to shift gears yourself. When you put it in Park, it uses a locking mechanism to help stop the car from rolling.

Term

park pawl

When you put an automatic car in Park, a small metal piece called the park pawl locks the drivetrain so the car can’t roll. It’s not meant to take abuse—like if the car is still moving when you shift into Park, especially on a hill.

Term

parking brake

The parking brake is the extra brake you use to keep the car from rolling when it’s parked. On a hill, it’s better to use this than to depend on the car’s “Park” lock.

Ford Flex
Car

Ford Flex

The Ford Flex is a crossover-style vehicle. Some vehicles like this can be made to use different fuel types, including ethanol blends. The podcast is talking about whether the car is set up to run E85, which matters for how it performs and whether it’s safe to use.

Term

flex fuel vehicle

A flex-fuel vehicle can use more than one type of fuel. In this case, it’s usually gasoline or E85, which is a blend with lots of ethanol. The car is built to adjust to whichever fuel you put in.

Term

E85

E85 is a fuel blend with mostly ethanol (85%) mixed with some regular gasoline. It can change how far you get per tank, because it contains less energy than pure gasoline. The car may still run fine since it’s designed for it.

Term

BTU

BTU is a way to measure how much energy is in the fuel. If the fuel has fewer BTUs per gallon, you usually have to use more of it to go the same distance.

Term

E30

E30 means the fuel is roughly 30% ethanol and 70% gasoline. It can be cheaper than pure gasoline, but it may still reduce your miles per gallon a bit.

BMW E30
Car

BMW E30

The BMW 3 Series is a smaller luxury car that’s designed to drive well. The podcast mentions using different types of fuel blends, like E30 or E85, which can change how the engine runs. That matters because not every car is set up to use every fuel blend safely.

Term

flex fuel car or truck

A flex-fuel vehicle can run on different fuel blends, including E85. The car adjusts how much fuel it injects so it can handle the higher-ethanol mix.

Term

oil change interval

An oil change interval is how often you change your engine oil. They’re saying don’t stretch it out too long—especially with E85—because it can lead to more contamination in the oil.

Term

unburned fuel

Unburned fuel is fuel that didn’t fully burn in the engine. If that happens, it can mix with the engine oil and make the oil less effective, so you may need more frequent oil changes.

Term

fuel gauge

The fuel gauge is the dashboard light/reading that tells you how much gas is left. With E85, you may burn through it faster, so the gauge can fall quicker than you’re used to.

Term

fuel injector cleaner

Fuel injector cleaner is a chemical additive that helps clean the parts that spray fuel into the engine. The idea here is that E85 can also have a cleaning effect, which might make things better—or sometimes temporarily cause weird behavior if it loosens buildup.

Term

octane

Octane is basically how “knock-resistant” a fuel is. If the fuel can resist knocking, the engine can often be tuned to run more aggressively without damage.

Term

tune the car

“Tune the car” means changing the car’s computer settings so the engine runs correctly with the fuel you’re using. Different fuels need different settings to burn cleanly and safely.

Term

fuel mile

They’re talking about how efficiently the car uses fuel—how many miles you get for the amount you buy. With ethanol blends, that efficiency can change.

Term

diesel engine

A diesel engine is a type of engine that runs by compressing air until it’s hot, then injecting fuel. Because it works differently than a gasoline engine, it can behave differently in cold weather.

Term

additives

Additives are extra chemicals you put into fuel to help it work better—especially when it’s cold. They can help prevent fuel from behaving badly and keep the engine running smoothly.

Ford Explorer
Car

Ford Explorer

The Ford Explorer is a family-sized SUV. The podcast mentions a 1998 Explorer that has had an engine change, which can make it act differently than a stock one. That’s important when diagnosing problems like sudden stopping or starting issues.

Part

fuel pump

The fuel pump sends gas from the tank to the engine. If it’s not working, the engine may crank but won’t start because it isn’t getting fuel.

Part

neutral safety switch

This switch is a safety feature that stops the starter from working unless the car is in the right gear. If it’s wrong, the engine might not crank when you turn the key.

Term

PVC

This is related to a valve that helps manage engine crankcase vapors. If it’s stuck or failing, it can cause weird running problems, so people replace it while diagnosing.

Term

anti-theft system

The anti-theft system is the car’s security system. It checks whether the key is recognized, and if not, it will warn you (often with blinking lights) and may block starting.

Term

theft module

The theft module is the car’s security computer. If it’s not working correctly, it can cause the anti-theft warning lights to behave strangely or prevent the car from recognizing the key.

Term

scanner

A scanner is a device a shop uses to talk to the car’s computer. It can pull up error codes so you know what’s wrong instead of guessing.

Term

programmed

When a car part like an anti-theft module is “programmed,” it means the vehicle’s electronics are configured with the correct settings and security data. This is often required after repairs so the module can properly recognize the key and operate the immobilizer logic.

Term

different key

Some keys have a chip inside that the car must recognize. If that key isn’t being read correctly, the anti-theft system can act up and the car may not behave normally.

Term

inertia switch

An inertia switch is a safety device that can shut off fuel after a crash. In this case, the host says it wouldn’t stop the starter from turning the engine over—it only affects fuel.

Term

starter relay

The starter relay is like a heavy-duty switch that tells the starter motor to crank the engine. If the car’s security system doesn’t allow starting, it can prevent that relay from working.

Topic

dark web monitoring

Dark web monitoring looks for signs that your personal info may have been leaked. If it finds your details in a breach, it alerts you.

Topic

password manager

A password manager is an app that safely stores your passwords. It can also help you create strong passwords without having to invent them yourself.

Topic

VPN

A VPN is a tool that makes your internet connection more private by encrypting it. It can help prevent others from seeing what you’re doing online.

Topic

antivirus

Antivirus is software that helps protect your phone or computer from harmful programs. It looks for threats and tries to stop them.

Topic

identity theft insurance

Identity theft insurance helps pay for some of the costs that come with identity theft. It can make it easier to recover if someone steals your information.

Topic

wheels

Wheels are the rims your tires mount on. The right wheels have to match your car so they fit safely and don’t rub.

Term

OEM

OEM stands for the original parts your car was built with. If a replacement part is “OEM,” it’s made to fit and look like the factory part.

Part

TPMS sensors

TPMS sensors are the little devices that track your tire pressure. If you change wheels, you usually want to reuse your car’s original TPMS sensors so the warning system stays accurate.

Company

Berkeley One Classics

Berkeley One Classics is a company that helps insure collector and specialty cars. They’re described as offering coverage that’s based on an agreed value, so you’re less likely to get a low payout after a claim.

Term

agreed value policy

An agreed value policy means you and the insurance company agree on a car’s value ahead of time. If something happens to the car, the payout is based on that number, not a fight over what it was “worth” later.

Term

online quote tool

An online quote tool is a website form that helps you get an estimated insurance price. The host says it’s quick and easy to use.

Company

car-part.com

car-part.com is a website for finding car parts. The host says it’s quick to search and helps you locate parts for newer cars and older ones too.

Concept

collector car coverage

Collector car coverage is insurance designed for classic cars. It usually accounts for how valuable the car is as a hobby/collector vehicle, not just as a regular used car.

Concept

pre-restoration vs restored value

They’re talking about how a car can be worth a lot more once it’s fully restored, but much less while it’s still being worked on. That difference can affect what you should insure it for.

Concept

in the middle of restoration

Being “in the middle of restoration” means the vehicle is partially disassembled and not in its finished, drivable condition. That matters for valuation and insurance because the car’s worth can be very different from both the original condition and the fully restored value.

Concept

coverage for a car being worked on (not road-worthy)

They’re talking about two different insurance situations: a car you drive daily versus a car that’s in your garage and not ready to drive. The insurance can sometimes be set up to cover the car and parts while you’re working on it.

Term

insurance underwriters

Underwriters are the insurance company’s risk experts. They decide what they’ll cover and how much, so you have to coordinate with them to make sure your situation is covered.

Ford Model T
Car

Ford Model T

The Ford Model T is a very old car from the early days of automobiles. The podcast mentions it because it’s insured, and classic cars often need special insurance. That’s especially relevant when talking about what happens if something like a fire occurs.

Concept

project

A "project" car is a vehicle that’s being repaired, modified, or restored over time rather than driven normally. The transcript suggests it was sold before the work was finished, which is common when a project runs out of time or money.

Term

overdrive

Overdrive is an extra “high gear” in an automatic transmission that helps the engine run slower on the highway. If it keeps turning on and off or won’t come back, something inside the transmission system may be malfunctioning.

1993 Chevy Silverado
Car

1993 Chevy Silverado

This is a 1993 Chevrolet Silverado pickup. The “overdrive” is a higher gear used for highway driving, and the fact it keeps switching in and out points to a transmission problem that needs checking.

Term

4LC

“4LC” sounds like a code for the specific transmission setup in that truck. It matters because different transmission types use different parts and diagnostic steps.

Term

transmission fluid

Transmission fluid is the fluid that keeps the transmission moving parts lubricated and helps it shift gears. If the level is low, the transmission may shift wrong or not shift into overdrive, and sometimes leaks don’t leave a big puddle.

Term

transfer case

The transfer case is part of a 4-wheel-drive system that sends power to the front and rear wheels. It has its own fluid, so if transmission fluid is getting into it, something inside the drivetrain is likely leaking.

Term

rear tail shaft housing

This is the back housing area of the transfer case where the drivetrain output comes out. If fluid is leaking from there, it often means a seal or internal part isn’t holding pressure correctly.

Term

top fill plug

The top fill plug is the access point you use to add fluid and check the correct level in the transfer case. If fluid shoots out of it, the transfer case is likely getting too much fluid.

Term

vacuum modulator

A vacuum modulator is an older automatic-transmission part that uses engine vacuum to help control how the transmission shifts. If someone swapped in an older transmission, it can cause fluid to get pulled into vacuum lines instead of staying where it should.

Term

solenoid

A solenoid is an electronically controlled switch/valve inside an automatic transmission. If one solenoid stops working, the transmission may lose more than one gear because it uses several of these signals together.

Ford F150
Car

Ford F150

The Ford F-150 is a large pickup truck. The podcast mentions a 2013 model that’s driven mostly for hauling a horse, which is a practical use case. That kind of routine use can affect what maintenance items you should watch for.

Term

starter cranked, but it didn't fire

The starter was turning the engine over, but the engine wouldn’t actually start. That suggests a problem with getting ignition or fuel to the engine, not just the battery.

Term

rev control

They’re talking about how fast the engine spins (RPM). If RPM jumps when you press the gas but doesn’t come back down quickly, something in the engine’s idle/air control isn’t behaving normally.

Term

fuel pressure

Fuel pressure is how strongly the fuel system is pushing gas through the fuel line. If pressure drops after the car sits, turning the ignition on a few times can help bring it back so the engine starts.

Term

fuel line

The fuel line is the tube that carries gas from the pump to the engine. If gas leaks back when the car sits, the engine may not get the pressure it needs to start right away.

Volkswagen Derby
Car

Volkswagen Derby

The Volkswagen Derby is a Volkswagen model name. In the podcast, it’s mentioned in a casual way, not as part of a detailed repair or performance topic. So the main point is just that the car is being talked about.

Chevrolet Sonic
Car

Chevrolet Sonic

The Chevrolet Sonic is a small, everyday car. The podcast mentions a 2015 Sonic LT and says there’s been a problem for a few months. That usually means the conversation is about figuring out what’s wrong and how to fix it.

Term

sporadic issue

A “sporadic issue” means the problem comes and goes. That makes it tougher to diagnose because it might not happen when you try to check it.

Term

loses some power

“Loses some power” means the car doesn’t feel as strong when you press the gas. That can happen when the engine isn’t getting the right fuel/air or when the car detects a problem and limits performance.

Term

idles choppy

A “choppy idle” is when the engine doesn’t run smoothly at a stoplight or right after you start it. It can feel like it’s shaking or stumbling for a few seconds.

Term

power windows

Power windows are the windows that go up and down with buttons instead of hand cranks. If two or more stop working together, it usually means there’s an electrical problem affecting the whole system.

Term

loss of power

“Loss of power” means the car isn’t acting like it should—like it won’t respond normally. Sometimes it’s caused by an electrical problem, not just the engine itself.

Term

ignition switch

The ignition switch is what turns the car’s electrical system on. If it’s worn out or failing, parts of the car’s electronics may lose power or act strangely.

Term

CAN bus

CAN bus is the car’s communication system—like a shared network that the car’s computers use to talk to each other. If it breaks, multiple features can stop working at the same time.

Term

body control module

The body control module (BCM) is one of the main car computers for body features like locks and windows. If it’s failing, those features can act up and other computers may report communication problems.

Term

data interruption

A data interruption means the car’s computers aren’t able to exchange messages properly. When that happens, some features may stop working because the system can’t “talk” to the right computer.

Term

check engine light

The check engine light (CEL) is the dashboard warning that indicates the engine or emissions control system has stored a fault. In this segment, the hosts note that the CEL can be on for years, which may or may not be related to the body-electronics/network issue being diagnosed.

Term

BCM

BCM means “Body Control Module.” It’s the car’s computer that runs a lot of the electrical features like lights and locks. They’re saying the problem might be connected to that module.

Term

wiring schematic

A wiring schematic is a map of the car’s wiring—what connects to what. The idea is to follow the power and ground wires to find where the problem is.

Term

transmission band

Inside an automatic transmission, there are parts that use friction to control the gears. A “band” is one of those friction parts, and if it’s worn it can cause shifting problems—sometimes you can replace just that band.

Term

transmission overhaul kit

When a transmission is rebuilt, shops often use a kit that includes the common worn-out internal parts. That way they can replace what’s bad and put the transmission back together properly.

Term

valves

Automatic transmissions use fluid pressure to control shifting. “Valves” are the internal parts that direct that fluid, and if they’re still working well, the repair may be simpler.

Term

serviceable truck

A “serviceable truck” is basically a truck that can be fixed and maintained without huge trouble. Buyers like those because they’re easier (and usually cheaper) to keep on the road.

Term

Cummins diesels

Cummins is a company that makes diesel engines used in many heavy-duty trucks. “Cummins diesels” just means a truck with a Cummins diesel engine, the kind people buy for work because it’s made to handle tough use.

Term

work trucks

“Work trucks” are trucks used for real jobs—like hauling or construction—not just everyday driving. People pay more for them when they’re dependable.

Term

injector failure

Fuel injectors are the parts that spray fuel into the engine. If an injector fails, the engine may run rough or start acting up because it’s not getting the right amount of fuel.

Term

slight knock

“Knock” is a rattling or pinging sound from the engine. It usually means the engine isn’t burning fuel the way it should, or something inside is under stress.

Term

specialty spool

A “spool” here sounds like a drum for winding cable/rope used for pulling. A “specialty spool” means it’s set up for a specific job, like towing or hauling.

Term

transmission shop

A transmission shop is a garage that focuses on fixing transmissions. The point here is that some shops will only replace parts with rebuilt ones, while others can take your unit apart and repair it directly.

Term

remanufactured unit

A remanufactured unit is a used part that gets taken apart and rebuilt by a shop, usually with new internal pieces, so it’s supposed to work like a replacement. It’s often used when the shop doesn’t want to (or can’t) rebuild yours from scratch.

Concept

self-driving

“Self-driving” means the car can take over some driving tasks, but it usually isn’t fully autonomous. The hosts are saying you should check the latest info and settings so you understand what the system will do for you.

Term

FSD

FSD is a software feature that helps the car drive more on its own. It can handle things like steering and lane keeping, and the host is talking about how much their daughter relies on it.

0:00
51:43