Diesel Repair and Diesel Diagnostics
Diesel repair at Jerry's covers engine complaints, diagnostic trouble codes, fuel-system faults, and diesel electrical problems on commercial trucks and semis. Diagnostics start at the Roberts shop, and mobile diesel repair is available when the truck cannot be brought in.
Serving commercial drivers since 1962. Call (715) 749-4490 or request a quote. Mobile emergency dispatch is available 24/7. Monday–Friday, 8:00 AM–5:00 PM. Saturday and Sunday: closed.
What this service includes
- Diesel engine diagnostics
- Check-engine-light diagnosis
- Fuel system inspection
- Diesel electrical diagnostics
- Preventive diesel service
How service works
01
Capture the code and the symptom
Note whether the engine derated, smoked, lost power, or set a dash warning.
02
Test the system
Computer diagnostics are paired with a physical check of fuel, air, cooling, and wiring.
03
Repair the failed part
The repair follows the test result. Unrelated maintenance is quoted separately.
Related services
Questions
Can you diagnose a diesel check engine light?
Yes. Bring the truck to Roberts or request mobile diagnostics if the truck is down in the service area.
Is diesel repair limited to semi trucks?
No. The shop works on commercial diesel trucks as well as Class 8 tractors.
Do you provide diesel preventive maintenance?
Yes. Fleets can schedule preventive diesel service during shop hours. See fleet maintenance for repeat intervals.
