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#2639: Honda Habitat

#2639: Honda Habitat

The Best of Car Talk May 16, 2026 35 min
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About this episode

A listener t-shirt contest kicks things off, with hosts joking about the prize and directing people to vote for the least offensive design. The show then pivots into car trouble: a 1992 Volvo 240 that stalls during brake-required automatic shifting, plus a deep dive into idle air control and cold-start fueling. Later, brake/steering noise gets tested with a brake-touch diagnostic, and the hosts diagnose a Honda “boing” as a likely broken coil spring. The segment closes with long-term storage advice for a 1986 Honda CR-X.

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Technical Too Afraid to Ask
Car

Volvo 240

"She's wanted a Volvo, an old one, for a long time. So we bought a 92-240. And often when you start it, just for a little bit after you start it, it acts like it's starved for gas."

A Volvo 240 is an older Volvo model that’s famous for being tough and straightforward. Here, they’re talking about a 1992 one that has a weird problem when starting and shifting—like it doesn’t want to run smoothly right away.

Term

starved for gas

"And often when you start it, just for a little bit after you start it, it acts like it's starved for gas. You know, you've got to put your foot on the brake in order to shift."

“Starved for gas” means the engine isn’t getting enough fuel at that moment. When that happens, the car can run rough or even stall until it’s getting the right amount of fuel.

Term

automatic

"It's an automatic. In order to shift, you've got to have your foot on the brake. And while you're doing that, it stalls."

An automatic transmission shifts by itself. This car also seems to require the brake pedal to be pressed before it will shift, which is why the driver’s actions affect whether it stalls.

Term

idle air control

"This car has an electronic device called the idle air control, which is in this car located under the intake manifold. And its job is, when the engine is cold, that it basically allows more air to come in and bypass the throttle..."

Idle air control is a device that helps the engine idle when it’s cold. It lets in a bit more air so the engine doesn’t stall and can warm up properly.

Term

intake manifold

"located under the intake manifold. Yeah. And its job is, when the engine is cold, that it basically allows more air to come in..."

The intake manifold is the engine’s air distribution box. It routes air to the cylinders, and parts mounted under it can affect how the engine idles.

Term

throttle

"allows more air to come in and bypass the throttle and makes the injection throw in more fuel. It makes it think that it wants more fuel because it sees more air."

The throttle controls how much air the engine gets. When it’s cold, the car can add extra air around the throttle so the engine can idle without dying.

Term

coolant temp sensor

"And this coupled with the other sensors on the car like the coolant temp sensor actually increased the flow of fuel from the injectors..."

The coolant temp sensor tells the car how hot the engine is. When the engine is cold, the car uses that info to add fuel and manage idle so it runs smoothly.

Term

fuel injectors

"increased the flow of fuel from the injectors, increases the pulse to the injectors, and makes the engine race."

Fuel injectors are electronically controlled valves that spray fuel into the engine in precise amounts. When sensors indicate cold conditions, the engine control unit increases injector pulse width (how long the injectors stay open) to add more fuel.

Concept

choke (equivalent)

"It's the equivalent of a choke. In the old days, you pump the gas a couple of times, you set the choke, you turn the key and the engine ran at like 2,000 RPM..."

A choke is an older cold-start trick that helps the engine run when it’s not warmed up. The idea here is that modern idle air control does a similar job electronically.

Part

sticky caliper

"I think you have a sticky caliper. And I think the fact that they put new pads in maybe worsened the problem."

If a brake caliper is “sticky,” it may not let go of the brake pads after you stop braking. That can make the brakes rub a little all the time, which can wear things out faster.

Part

pads

"And I think the fact that they put new pads in maybe worsened the problem. The more the caliper may have been marginally acceptable when they put the pads in."

Brake pads are the parts that squeeze against the brake disc to slow the car down. If the brake isn’t releasing properly, new pads can still end up rubbing.

Part

disc rotors

"If it turns out the caliper's not stuck, have them rough up the pads and the disc rotors. Maybe they didn't get a good cut on the discs."

The disc rotors are the metal discs the brake pads press against. If the pads have been rubbing or wearing unevenly, the disc surface may need attention so the brakes work smoothly again.

Term

good cut on the discs

"Maybe they didn't get a good cut on the discs. Okay. And you're getting a sound from that."

A “good cut” means the brake disc surface was cleaned up properly. If it wasn’t done right, the brake pads may not seat well, which can cause noise or uneven braking.

Car

Buick Regal

"All right. I have a 91 Buick Regal. Yeah."

The Buick Regal is a mid-size car made by Buick. The 1991 model is an older car from the early 1990s, typically used for regular driving. It’s being mentioned because the speaker has that specific year and model.

Term

zero speed

"And when you got to zero speed, the noise went away. And when you got to some higher speed accelerating, the noise also went away..."

They’re using “zero speed” as a clue. If the noise goes away when the car is fully stopped, it usually means the problem is happening only when the wheels are turning.

Term

tread separation

"Yeah. I think you have a classic case of tread separation. Oh."

Tread separation means the rubber on the outside of the tire is starting to come loose from the rest of the tire. As the tire spins, that loose section can rub and make noise, and it can also feel like the car is jerking over certain spots.

Term

plies

"But if you have the tread coming apart, what will happen is that the plies of the tire will rub against one another and you'll get this noise."

Plies are the internal layers inside a tire that help it stay strong and keep its shape. If the tread is separating, those layers can move and rub, which creates noise as the tire turns.

Car

1986 Honda CR-X

"It's a 1986 Honda CR-X. I don't have a driveway. And it has 153,000 miles on it. And I want to know what kind of questions I should be asking the storage guys so that I know that my car will work when I get back from Costa Vo in two years."

The 1986 Honda CR-X is a small Honda hatchback from the 1980s. Here it matters because the owner wants to store it for two years and make sure it still runs when they return.

Car

Honda Civic

"Hey, I have a 97 Honda Civic four-door, and I got really scared last weekend driving in the car because about every other month when I'm driving down a hill and turning to the right, I hear this very loud noise from the back, like, strong boing, and the car doesn't do anything different, but this huge noise comes out."

A Honda Civic is a common, everyday compact car. Here they’re talking about a 1997 Civic that makes a loud, intermittent noise from the back when driving downhill and turning.

Concept

intermittent noise

"The origin of noises can be elusive... No, because it's so intermittent, you know, you can't predict it. Yeah, it just sneaks up on you all of a sudden... you wouldn't necessarily get it every time."

An intermittent noise is a sound that comes and goes. Since it doesn’t happen every time, it’s harder for a mechanic to figure out what part is causing it.

Company

Honda dealer

"I've taken it into the Honda dealer now twice just for this particular issue, and they say, well, sorry, ma'am, unless we can hear it ourselves, there's nothing we can do."

A Honda dealer is the official Honda service shop. They’re saying they can’t fix or diagnose the problem unless they can hear the noise themselves.

Term

spring noise

"Sounds like a spring noise, doesn't it? Yes, it does. You know why? Why? It's what it is."

“Spring noise” just means a sound coming from the suspension area. If a spring is damaged, it can make loud, noticeable noises when the car moves.

Part

coil spring

"It could easily be a broken coil spring. Broken coil spring. Yeah, and they're hard to detect."

A coil spring is the spring in the suspension that helps the car absorb bumps. If it breaks, the suspension can start making loud noises and feel wrong over the road.

Term

suspension check

"Yeah, but they did a suspension check last week. Tell them to do it again. They didn't do it right."

A suspension check is an inspection of the suspension components (springs, shocks/struts, bushings, and related hardware) to find wear or damage that can cause noises or poor handling. It’s often done visually and by checking for play or obvious failures.

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