Home > News > Summer EGR Care: How to Avoid Overheating and System Failure?
Summer EGR Care: How to Avoid Overheating and System Failure?
As temperatures rise during summer, your vehicle’s Exhaust Gas Recirculation (EGR) system faces increased stress. Overheating can lead to clogged EGR valves, carbon buildup, and even engine performance issues—especially in diesel trucks frequently hauling heavy loads.
If you’ve noticed rough idling, reduced fuel efficiency, or check engine lights in hot weather, your EGR system might be at risk. In this guide, we’ll explain:
- Why EGR systems overheat in summer
- Key signs of EGR overheating
- How to prevent damage and maintain performance
- Upgrade options for better heat resistance
Why Does the EGR System Overheat in Summer?
The EGR system recirculates a portion of exhaust gases back into the engine to reduce NOx emissions. However, in high temperatures:
- Hotter exhaust gases increase thermal stress on EGR components.
- Carbon buildup accelerates, leading to clogged valves and coolers.
- Increased engine load (towing, stop-and-go traffic) worsens heat retention.
Without proper maintenance, this can cause:
- EGR valve sticking or failure
- Cooler clogging and reduced efficiency
- Higher engine temps and potential DPF issues
5 Ways to Prevent EGR Overheating & Damage
1. Regular EGR System Cleaning
Carbon deposits are the 1 cause of EGR failure. Use EGR-specific cleaners or schedule professional cleaning every 30,000–50,000 miles.
2. Upgrade to a High-Flow EGR Cooler
Stock EGR coolers can struggle under extreme heat. An aftermarket performance cooler improves heat dissipation and reduces clogging risks.
3. Monitor Exhaust Gas Temperatures (EGTs)
If EGTs frequently exceed 1,200°F, consider:
Tuning adjustments to reduce recirculated gas temps
Auxiliary cooling solutions for heavy-duty applications
4. Improve Engine Cooling Efficiency
Ensure proper coolant levels and a functioning thermostat.
Upgrade to a high-capacity radiator or intercooler if towing in hot climates.
5. Consider an EGR Delete (Where Legal)
For extreme cases, an EGR delete kit eliminates recirculation entirely—reducing heat buildup and maintenance. *Note: Check local emissions laws before modifying.
Recommended EGR Upgrades for Summer Reliability
If your EGR system is struggling in the heat, these upgrades can help:
- High-Performance EGR Coolers – Improved heat exchange for diesel trucks.
- EGR Cleaning Kits – Remove carbon deposits without disassembly.
- EGR Valve Upgrades – Durable aftermarket valves for heavy-duty use.
- Browse our selection of EGR cooling solutions to keep your system running smoothly all summer
Final Thoughts
Summer heat is tough on EGR systems, but proactive maintenance and smart upgrades can prevent costly failures. Whether you need a better cooler, cleaning kit, or performance valve, taking action now can save you from breakdowns later.
Have questions about your EGR system? Contact our or shop our EGR components today!