Photo courtesy of HomeTowne Auto Repair and Tire
Parts of a vehicle heat up as it’s driven.
Certain components help cool them off.
Charles, one of our technicians, replaced the intercooler of a 2015 Audi A4 last month.
Intercoolers are heat exchanging devices that are found on top or in front of the engine of supercharged or turbocharged cars.
The turbo takes pressure from the exhaust. It spools up and sends more air into the air intake, creating more power — also known as “boost”. More power equals more heat.
A heat exchanger is needed to lower the intake air temperatures, which can prevent damage to the engine.
Air to water intercoolers are used on drag racing cars. Those using them will add ice to the intercooler, so the intake air temperature becomes even cooler.
The Audi was brought in when the check engine turned on. It had a running rich code.
Charles disconnected the intake tube from the throttle body. He performed a smoke test and smoke started pouring out of the intercooler.
Some type of impact caused the air leak. When the air was passing through, it sucked in unmetered air, causing it to run rich.
New intercooler and old intercooler
When you notice a problem with your vehicle, it’s important to share as much information as you can with the mechanic or auto shop.
These details — even the ones that seem irrelevant — can help them address the issue and get you back on the road sooner.
This article was written by HomeTowne Auto Repair & Tire, an authorized Michelin and BFGoodrich tire dealer in Woodbridge. The auto repair shop performs various services, including oil changes, alignments and computer engine diagnostics.
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