At Wrench’d Auto Centers, we understand the heart and soul of your truck lies in its diesel engine. Whether you’re hauling loads, managing a fleet, or simply enjoying the strength and efficiency of your diesel truck, you need a repair shop that specializes in what makes your ride unique. That’s why we’ve built our service offerings around the most critical components of light-duty diesel truck maintenance—providing performance, longevity, and fuel economy without compromise.
Services
1. Fuel System Diagnostics & Diesel Injection Repair
Modern diesel fuel systems are complex, high-pressure systems that must operate in perfect harmony to maintain performance. At Wrench’d Auto Centers, we offer:
Advanced Fuel System Diagnostics
Using factory-grade tools, we identify injector balance rates, rail pressures, pump performance, and possible fuel delivery issues.
Injector Cleaning & Replacement
Clogged or worn diesel injectors can result in misfires, rough idling, poor fuel economy, and even engine damage. We clean, service, or replace injectors as needed.
Fuel Pump Testing
Whether it’s a CP4, CP3, or common-rail fuel pump, we test for pressure loss, cavitation, and delivery inefficiency.
Contaminated Fuel Repair
We also handle issues related to water, algae, or poor-quality diesel fuel—ensuring your fuel system stays clean and reliable.

2. Turbocharger Maintenance & Upgrades
Your diesel truck’s turbocharger is a powerhouse component that increases air intake and maximizes horsepower. Keeping it in top condition is essential for performance and fuel economy.
At Wrench’d Auto, we offer:
Turbo Health Inspections
We look for signs of boost leaks, excessive shaft play, oil seepage, or turbo lag.
Wastegate & VGT Testing
Variable Geometry Turbochargers (VGT) and wastegate valves are common sources of drivability issues and must be calibrated correctly.
Turbo Cleaning Services
Carbon buildup can choke your turbo. We offer safe, effective cleaning to restore boost response.
Performance Turbo Upgrades
Want more power? We can help you select and install an upgraded turbo system tailored to your power goals.

3. Diesel Performance Tuning & ECM Recalibration
If you’re seeking more power, torque, or better fuel economy, custom diesel performance tuning might be your best investment.
Here’s what Wrench’d Auto Centers can do:
ECM Flash Tuning
Modify engine parameters like timing, fuel injection rate, turbo boost, and more for tailored performance.
Power Tuning for Towing or Off-Roading
We provide options for increased towing capacity or enhanced off-road torque curves.
Fuel Economy Maps
Want to maximize mileage on highway trips or long hauls? Our economy tunes offer savings at the pump without sacrificing drivability.
Diagnostics & Tune Adjustments
Not happy with your current tune? We offer retunes, diagnostics, and emissions-compliant options.
Why Choose Wrench’d Auto for Your Diesel Truck?
Diesel engines are not just bigger—they’re different. With higher compression, turbocharging, and fuel system intricacies, they require skilled hands and advanced diagnostics. Our ASE-certified technicians bring years of experience working exclusively on light-duty diesel trucks including the most popular brands like Ford Power Stroke, Ram Cummins, and GM Duramax engines.
Whether you’re a contractor, rancher, fleet manager, or weekend warrior, our team ensures your truck runs efficiently and powerfully—mile after mile.
✅ ASE-Certified Technicians – Skilled professionals with industry-recognized certifications ensure expert service every time.
✅ Advanced Diagnostic Equipment – State-of-the-art tools for precise troubleshooting and accurate service recommendations.
✅ Quality Parts & Products – We use only premium oils, filters, fluids, and components to maintain your vehicle’s integrity.
✅ Service for Most Makes & Models – From daily drivers to diesel trucks, we handle a wide range of vehicles with precision.
✅ Locally Owned & Operated – Proudly serving Haslet, Fort Worth, and nearby communities within a 15-mile radius.
✅ Customer-Centered Approach – Our goal is to build long-term relationships by putting your safety and satisfaction first.
What Sets Wrench’d Auto Apart?
- Factory-Level Diagnostic Tools
- Transparent Quotes & Honest Service
- Dedicated Diesel Specialists – Not Generalists
- Fleet Maintenance Options Available
- Performance-Oriented Solutions
Whether it’s routine maintenance or high-performance diesel upgrades, Wrench’d Auto Centers is your go-to partner for keeping your truck dependable, responsive, and strong.

Book Your Diesel Service Appointment Today
Trust your truck to the pros who live and breathe diesel. Call Wrench’d Auto Centers or schedule online for the most dependable light-duty diesel truck services in the region. From fuel systems to turbochargers to performance optimization, we’re here to keep you running strong.