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New Study On Brake Pad Failure Modes And Corrosion Find Some Vehicles Pose A Significant Safety Risk

In a recent engineering field study of 3,200 brake pads, the Global Brake Safety Council analyzed discarded pads to find out it the pad had failed or just worn past specifications. The study classified each of the pads into five distinct categories or failure modes. The study also took into account the geographic location of where the pad was collected to help make the connection between corrosion of the backing plate, shims, and attached hardware.

Corrosion Science: Bang, Burn Or Spray

Corrosion and rust are nasty problems that make repairing a vehicle difficult. Corrosion is the product of an electrochemical reaction. In a vehicle’s case, between two dissimilar metals and an electrolyte – so, an alloy wheel, a steel bearing hub and saltwater, for example.

Corrosion Issues With Fuel Filler Necks

Since the introduction of the OBD II system, manufacturers have continued to improve on the monitoring of evaporative emissions, with the complete evaporative system being under a scrutinized surveillance. Codes like P0440 to P0456 are all related to the fuel vapor control, including leaks.

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VIDEO: Brake Rotors And Anti-Corrosion Coating

Andrew Markel shows how anti-corrosion coating on quality brake rotors can create a win-win for your shop and the customer. Sponsored by Auto Value and Bumper to Bumper.

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Aluminum Caliper Corrosion Alert

Starting in about 1997, many automakers began to use aluminum instead of cast iron for their disc brake calipers. Aluminum is 65% lighter than iron, and aluminum forgings and alloys can have the same structural strength as iron components. The automakers liked the weight reduction because it helped boost gas mileage. However, they did not count on the problem posed by galvanic corrosion.

Galvanic Corrosion: The TPMS Killer

Some parts of the country are plagued by car-destroying corrosion. Whether the acceleration is caused by proximity to the ocean or by chemicals used for road treatment, corrosion can really take a toll on vehicles and the people who are dependent on them.

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Dealing With TPMS Sensor Corrosion

For TPMS sensors, a harsh environment isn’t a requirement to see valve seizing corrosion take hold. The most common type of corrosion we typically see affecting TPMS sensors is of the galvanic variety. Galvanic corrosion doesn’t depend on your location.

Replace Valve Stems at the First Signs of Corrosion

Every OEM that uses metal valve stems for its TPMS sensors advises that if any corrosion is seen on the valve stem, it should be replaced. If the valve stem breaks due to corrosion, it will result in rapid deflation of the tire. The nut has a bonded lubricant to help provide the proper torque required

Mazda issues recall due to ball joint corrosion

Mazda North American Operations notified the National Highway Traffic Safety Administration (NHTSA) that it was issuing a safety recall for certain 2007-14 model year CX-9 vehicles manufactured from Oct. 24, 2006 to Dec. 28, 2013. According to the recall acknowledgment, the vehicles in question may have front suspension ball joints that are susceptible to corrosion

NHTSA’s GM Brake Line Corrosion Investigation: Reading Between the Brake Lines

There will be no recalls on some GM vehicles for brake line corrosion. Instead, we received an advisory from the National Highway and Traffic Safety Administration (NHTSA) about brake line inspection and car washes. What was not discussed was the corrosion prone materials GM and other manufacturers used for brake lines during this period. It