Resealing and testing the operation of the heater box is also shown and is of equal value to non air-conditioned cars. Part 2 covers the other task that owners often put off: replacing the evaporator.

Last week I detailed the successful de-mousing of the heater box in my recently-purchased 1969 Lotus Elan +2. ... When I installed the heater box in the car, a few things went wrong.

Not all cars have a heater control valve, but if yours does, the valve is usually about the size of your fist, with a heater hose leading into it and another leading away from it into the firewall.

Muscle Car Restorations in Chippewa Falls, Wisconsin, restores nearly as many heater boxes as they do cars so we figured there must be a few tips we could pick up from their team of experts.

How To Fix Your Car's Heater. Here's what to do if your vehicle is struggling to turn up the heat. By Zachary Palmer Updated: Nov 11, 2019 2:30 PM EST. Taïs Mercier / EyeEm // Getty Images.

For this particular car, the heater core was bypassed, meaning that we could simply remove the nuts and slide the fiberglass heater box cover away from the firewall. See All 25 Photos 4.

How to Fix a Car Heater That Isn't Working. These instructions will help you diagnose and fix a car heating system that blows cold air. If the heater isn't blowing any air, skip to the next section.

Dear Car Talk: I have a 2015 Yukon XL with a cloudy inside windshield. It looks perfectly clean until the sun or oncoming headlights shine on it. I have tried to wash it with glass cleaner, and al… ...

"Right as they get in the car and start it, they put their heater on full blast to warm up fast," Von said. That approach, however, is counterproductive, according to Von.

The purpose of a block heater is to make your car easier to start. A warm engine starts easier than a cold one. While a remote starter also warms up the car, it does so after the engine is running ...