What happens when EGR cooler fails?

What happens when EGR cooler fails?

This additional heat is simply dissipated through the radiator. However, since the EGR cooler connects the exhaust and cooling systems of your engine, failures inside the cooler may lead to coolant loss, overheating, and engine damage, among other failures.

How do you diagnose a bad EGR cooler?

Usually the ‘check engine’ warning light will appear. Warning signs of EGR cooler failure can be a gradual loss of coolant with no apparent leaks. To check for this, look for white smoke or steam at the exhaust. A sign of extreme high temperatures in the EGR cooler can be “puking” from the overflow reservoir.

Can you clean an EGR temp sensor?

Cleaning the EGR Temperature Sensor The best way to clean the EGR temperature sensor is with a clean and dry cloth. Avoid using any harsh chemical as it can damage the sensor. If the sensor is still not fixed after cleaning, we recommend that you replace it with a new one.

What causes high EGR temps?

We mentioned earlier that excessive EGTs are due to a rich air/fuel mixture, which can be caused by too much fuel. Too much fuel is typically the result of modifying a turbo-diesel for more power.

Where can I replace my EGR temperature sensor?

We suggest that you take your car to a professional mechanic in case your car requires EGR temperature sensor replacement, however, if you have some experience in diagnosing auto-related problems, you can perform the replacement procedure at home as well. To locate the EGR temperature sensor, open the hood of your car.

How is the temperature of the EGR valve controlled?

This EGR valve is controlled through an EGR temperature sensor. The sensor collects vital information and, based on this information, the EGR valve determines when to open and close. When the EGR temperature sensor fails, it causes various issues with the EGR system and the situation should be addressed quickly.

What does an EGR cooler do on a diesel engine?

This information is used by the powertrain control module (PCM) for proper EGR control. On most modern diesel engines, an EGR cooler is used to cool the temperature of the exhaust gas before it enters the engine. The PCM relies on the EGR temperature sensors to monitor the cooler’s operation.

What are the symptoms of a bad or failing EGR cooler?

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.