Truck A/C Repair, DPF Diagnostics & Emissions Service
Western Truck Exchange specializes in commercial truck A/C system repair and diesel emissions system service, including DPF diagnostics, cleaning, and repair. Modern trucks rely heavily on properly functioning emissions systems and climate control to remain compliant, efficient, and comfortable for drivers.
Schedule A/C or DPF ServiceCommon Signs Your Truck Needs A/C or DPF Service
Catching these warning signs early helps keep small A/C and emissions issues from turning into costly breakdowns. If your truck is showing any of the signs below, our service team can diagnose the problem and get you back on the road quickly.
A/C Blowing Warm Air
The compressor or refrigerant system may need inspection to restore proper cooling performance.
Weak Airflow From Vents
Reduced airflow often points to a failing blower motor or blocked ductwork.
DPF Warning Light
An illuminated DPF light signals it is time for diagnostics before the filter becomes further restricted.
Check Engine Light
A lit check engine light can point to an emissions system fault that needs prompt attention.
Truck Stuck In Derate Mode
Derate mode limits engine power until the underlying fault is diagnosed and repaired.
Frequent Regeneration Problems
Repeated failed regenerations are a sign the DPF needs professional service.
Loss Of Power
A drop in power can result from a clogged filter or an emissions system fault.
Excess Soot Or Fault Codes
Visible soot or stored fault codes indicate the emissions system needs inspection.
A/C & DPF Services We Offer
Western Truck Exchange offers a full range of A/C and diesel emissions services for medium duty and heavy duty trucks in Los Angeles and Southern California, including
Truck A/C Diagnostics
Full system diagnostics that identify the source of cooling and airflow issues.
Refrigerant Leak Detection
Leak detection service that finds and addresses refrigerant loss before it causes further damage.
Compressor And Airflow Repairs
Repairs to compressors, blowers, and airflow components that restore reliable cooling.
DPF Diagnostics
Diagnostic testing that pinpoints DPF and emissions system issues.
Forced Regeneration Support
Forced regeneration service that clears the filter when passive regeneration is not enough.
DPF Cleaning And Repair
Thorough cleaning and repair service that restores filter performance.
Sensor And Fault Code Diagnostics
Sensor testing and fault code analysis that identifies the root cause of warning lights.
Emissions System Troubleshooting
Comprehensive troubleshooting for emissions related performance issues.
Derate And Warning Light Diagnosis
Diagnosis of derate conditions and warning lights to help get trucks back on the road.
Call Us at 323-750-1279
Or scroll down to schedule your service online