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What is an EGR Cooler??

The EGR cooler is a component used to lower the temperature of the exhaust gases that are recirculated by the EGR system. The EGR system recirculates exhaust gases back into the engine to decrease cylinder temperatures and lower emissions. The gas circulated by the EGR system can be considerably hot, especially in diesel engines. For this reason, many diesel engines are equipped with EGR coolers to lower the temperature of the exhaust gases before they enter the engine.

Bostech EGR coolers are upgraded with stainless steel tubing to cool the exhaust gases. Our upgrade over the OE fin style creates more cooling and heat disbursement area inside the cooler. When the EGR cooler has issues, it can cause problems with the functionality of the EGR system and lead to performance issues. Usually, a bad or failing EGR cooler will produce a few symptoms that can alert the driver of a potential problem.

  1. Engine overheating

One of the first symptoms of a potential problem with the EGR cooler is engine overheating. If the EGR cooler has any issues that restrict the flow of exhaust gases through the cooler it can cause the engine to overheat. Over time, carbon can build up on the inside of the EGR cooler and restrict flow through the cooler

  1. Exhaust leak

Another issue of a problem with the EGR cooler is exhaust leaks. If the EGR cooler gaskets fail, or the cooler gets damaged for any reason, it can cause an exhaust leak to develop. An exhaust leak may be heard as an audible hissing or tapping sound coming from the front of the vehicle.

  1. Check Engine Light comes on

Another symptom of a bad or failing EGR cooler is a Check Engine Light. If the computer detects a problem with the EGR system, such as insufficient flow or exhaust, it will set off the Check Engine Light to alert the driver of the issue. Make sure to scan for codes to verify the issue is within the EGR system.

 

When Replacing an EGR Cooler

When looking for an EGR cooler replacement be aware of cheap knock offs which will not support the constant extreme heat environment of the EGR system. A Quality EGR cooler like the upgraded Bostech EGR Coolers will help prevent labor cost of continuously replacement of low quality units.

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