Heavy Truck EGR Cooler Repair Service

The Best EGR Cooler Repair Service in Tennessee & Mississippi

EGR coolers are a well known fragile point on most diesel engines. It is important to take care of your truck's EGR exhaust cooling system and protect your engine.

What Does an EGR Cooler Do?

The cooler in your truck's EGR system works with the EGR valve to create a mix of air, fuel, and exhaust gasses that lower emissions. Exhaust Gas Recirculation (EGR) lowers combustion temperatures by diluting the air/fuel mixture with a small amount of inert exhaust gas. This process has no effect on the performance of your truck but it does reduce the change of chemical reactions that form pollutants. That being said, it is far more effective if the exhaust gas is cool, not hot. That is where the cooler comes in. The flow of exhaust gases through the EGR cooler is controlled by the vehicle’s computer via the EGR valve. 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 issues.

How Do I Know My Cooler is Going Bad?


Complete failure of your EGR’s cooling system could cause major damage to your engine. If you know what to look for, you may be able to spot your cooler’s failure before it becomes disastrous.

The most common first sign of failure is white exhaust smoke. This “smoke” is really steam from boiling water or coolant. This steam can be caused by a head gasket failure, a cracked EGR cooler or condensation inside the exhaust system.

As with any coolant leak, you may start noticing a lack of coolant in your overflow bottle. If you have to keep refilling your coolant system, and you don’t notice any drips on the ground, that coolant may be exiting through the exhaust via a leaking cooler.

Severe failures can lead to more serious problems such as connecting rods to bend, stretch head bolts, or blow the head gaskets, all causing severe engine damage.

How Can I Clean My EGR Cooler?

Replacing a cooler can get expensive. Failure is probably unavoidable, you may be able to extend the life of this part by keeping it clean. Clearing out soot and debris can restore an even flow through the cooler, which can reduce internal pressures and improve cooling performance.

There are several methods for cooler cleaning, but they all boil down to the same steps:

- Remove the cooler from the vehicle.

- Fill the cooler with a detergent.

- Let the cooler soak in the detergent to dissolve deposits.

- Thoroughly rinse the cooler to remove the loose deposits.

- Let the cooler dry, then reinstall it.

To clean really dirty passages, some repair shops place EGR coolers inside an ultrasonic cleaner. The ultrasonic waves vibrate the carbon loss while circulating detergent through the passages. This can speed up the cleaning process.

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Customer Reviews

We pride ourselves in putting our customers first. You can rest assured that our mechanics know the importance of treating every vehicle like their own.

Jeff Patterson

Jeff Patterson
5 Star Review
Springfield, TN

Had brakes repaired on my 2012 Expedition. Completely satisfied. Owner is honest and makes a great effort to see that each repair is to done correctly and that the customer is satisfied. Brant Jones has been my mechanic for 18 years. An honest and helpful mechanic is a good find. Any one star reviews are most likely written by someone who cannot be pleased or by a competing auto repair shop.

Carlos Medina

Carlos Medina
5 Star Review
Fairview, TN

Just to compliment the great service provided by the lady (Groria) who took care of our truck trouble.Very knowledgeable and attentive..we got in and out in no time. Job well done ( From San Antonio tx)

Donald Glaser Jr

Donald Glaser Jr
5 Star Review
Olive Branch, MS

I’m very pleased with repair on my RV. When no one else would even schedule me they worked me in and replaced the fuel pump in my tank. Very pleased!

Randall Orr

Randall Orr
5 Star Review
Memphis, TN

Had me back on the road in no time. Great business here!

David Connor

David Connor
5 Star Review
Nashville, TN

The team were fantastic. They came to our location where our truck was disabled several blocks from their business, they got under the hood and quickly and correctly diagnosed an obscure broken part in our power steering assembly, ordered the part and had it installed the next week, and did the entire thing so affordably we couldn’t believe we were in Nashville. 10 stars if possible.


Ferris Bruford

Ferris Bruford
5 Star Review
Memphis, TN

Our business requires that our trucks be up and running constantly. We run an extremely tight schedule with our equipment. We don't have time for our trucks to be down. We have scheduled the mobile trucks to be to us when our truck arrive to our location to take care of repairs. Specialized Truck Repair has never failed us. We can count on them 24 hours a day. Thank you for always going the extra effort to help us succeed!

Felicia Wells

Felicia Wells
5 Star Review
Kingston Springs, TN

Driving an RV from SC through TN on a Sunday. Called the big company near Specialized Trucking to jump our generator. Wouldn’t help us. I called Specialized Trucking helped us while extremely busy got our generator jumped in less than 10 minutes. Rock star service. Thank you SO much!!!

K T

K T
5 Star Review
Kingston Springs, TN

These guys are absolutely AMAZING!!!! I had an issue with my trailer and they went above and beyond anything I could've asked for to ensure that I was back on the road!!!! I have never had customer service this awesome from anywhere else!!!

Doug Wagner

Doug Wagner
5 Star Review
Fairview, TN

Brought my truck in because the air vents were not working right. When I turned on my heat it would blow cold out the a/c vents. The tech Kevin had my dash tore apart and fix the problem and had it all back together in an hour. Thanks for the great job.

J.A.H Freight LLC Hernandez

J.A.H Freight LLC Hernandez
5 Star Review
Kingston Springs, TN

Called the shop spoke to John. Explained to him how my driver was at Love's Truck stop near by. He couldn't move because the diesel pump was cracked Love's kept trying to send me to Freightliner. Glad i came across Specialized truck repair in Google. John got my truck towed to his shop for a reasonable prices. They got the part for me from freightliner and got it in the truck in half a day. Price was very reasonable and since they own the tow truck I got a good price on that. I highly recommend this shop If you are a OTR driver and are looking for a shop that won't take advantage of you.

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