EGR Valve & Cooler Service Jerome, Idaho
EGR valve and cooler service in Jerome, Idaho catches problems that can quietly kill an engine. Losing coolant with no puddle? White smoke? Codes that keep coming back after clearing? The Semi Shop tests EGR valves and pressure-tests coolers, then quotes the fix straight.
What does EGR service include?
The EGR system recirculates exhaust back into the engine, and it runs hot and dirty by design. We service the whole loop: EGR valve cleaning or replacement, cooler pressure testing and replacement, temperature and differential pressure sensors, and the carbon cleanup the passages need when soot builds up.
The big one is the cooler. A leaking EGR cooler lets coolant into the exhaust or the cylinders — white sweet-smelling smoke, coolant loss with no visible leak, or a hydrolocked engine in the worst case. We pressure-test coolers so you know for sure, because guessing wrong on this one costs an engine.
How long does EGR repair take?
Valve cleaning or replacement is often a same-day job. Cooler replacement runs longer — usually a day or two depending on the engine, since coolers on some engines are buried deep. We give you the timeline with the quote so you can plan your loads around it. Open 7 AM to 10 PM every day.
What to expect on price
Diagnosis first, then a written quote, then the work. The price we quote is the price you pay. If the cooler tests good and the problem is just a sticky valve and carbon, you pay for the small job, not the big one.
EGR wear on Magic Valley duty cycles
Local ag work is hard on EGR systems. Lots of idle time at dairies and processors keeps exhaust temps low, and cool exhaust means soot — soot that cakes the valve and plugs the cooler. If your truck runs short, heavy hauls around Jerome, Twin Falls, or Burley and the EGR codes keep returning, it's time for a real cleaning and a cooler test, not another code clear. We're minutes off I-84 exit 168.
Driver questions
What are the signs of a bad EGR cooler?
Losing coolant with no visible leak, white smoke that smells sweet, coolant residue in the exhaust, and overheating. A pressure test confirms it. Catch it early — coolant in a cylinder can destroy an engine.
Can I just delete the EGR system?
No — removing or disabling emissions equipment on a highway truck is illegal, and it causes problems at resale and inspection time. We repair the system so it works the way it was built to.
Why does my EGR code come back after I clear it?
Because clearing a code doesn't fix the fault. A sticky valve, a plugged cooler, or a bad sensor will set the same code again within days. We find the cause and fix that. Call (208) 696-9888.
Shop bays in Jerome or mobile to any I-84 exit, Bliss to Declo · 7 AM–10 PM every day · The price we quote is the price you pay.