Diesel Repair Portland OR

Your Trusted Diesel Mechanic

Looking for a Portland OR diesel mechanic that will go the extra mile?

We understand that a problem with your diesel truck is something you need taken care of quickly and with utmost confidence. We specialize in light-duty diesel maintenance and repairs for diesel trucks of all makes and models. Our team of expert diesel technicians will provide you with top-rated, convenient, and informative services to get you back behind the wheel as quickly and as safely as possible.
Transmission Diagnostics / Repair / Service
Whether you drive a manual, automatic, or semi-automatic vehicle, our team has the necessary skills and experience to correctly diagnose the problem with your transmission and repair it quickly.
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Wheel Alignment Services
Regular wheel alignment services will optimize your vehicle performance and promote reduced tire wear, better gas mileage, and safer driving conditions.
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Check Engine Light / Warning Lights and Drivability Diag
If you notice a warning light on your dashboard, bring your vehicle in for a dashboard warning diagnostic service as soon as possible so you can drive with confidence.
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Engine Diagnostics / Repair / Performance
Engine warning lights help alert drivers to minor issues before they become more complex and costly repairs, so it’s crucial to get things checked out as soon as you notice a warning sign.
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Exhaust System DPF / SCR / DOC Diagnostics / Repair
The fuel and exhaust systems inside diesel engines work closely together, making it important to have a diesel engine specialist diagnosis your vehicle.
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Fuel Injection System Diagnostics / Service / Repair
Proper care of diesel fuel injectors will guarantee that your diesel engine is just as responsive and powerful as the day you bought it.
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Cold Start Diagnostics / Repair
The cold start injector plays a key role in the performance, so when it does have issues the problems can detract from the overall drivability of the vehicle.
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Glow Plug System Inspection / Testing / Repair
Without a functioning glow plug, a diesel engine will have trouble igniting fuel in the combustion chamber, which can lead to idling, excess smoke emissions, and other issues.
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ADAS Service / Repair / Reset
Advanced driver-assistance systems (ADAS) need to be calibrated following any repair, service, or maintenance on your vehicle.
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Diesel Particulate Filter Service / Cleaning
Diesel engine flushes will result in an increase in compression, due to dissolving, dispersing, and removing carbon around piston ring grooves.
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EGR Cooler System Service / Cleaning
An EGR cooler service will help keep your emission system in top notch shape with minimum break downs.
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VGT Turbo Service
A VGT (variable geometry turbo) service will help keep the turbo running at its best.
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Diesel Engine Oil System Cleaning / Flush
A diesel engine oil flush will help keep the engine clean and the injectors in top notch shape.
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Induction / Intake System Cleaning / Service
Induction system cleaning service will remove carbon and other deposits to improve your diesel engines throttle response, power, and fuel economy.
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Fuel Injection System Service / Cleaning
Fuel inection system need to be cleaned to give you better gas mileage, increase engine performance, restore a smooth idle and protect from possible future repairs.
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Glow Plug Replacement Service
Glow plug will eventually fail and replacement is not like replacing spark plugs, it can be more difficult and labor intensive.
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Drivetrain (Axle / CV Joint / Driveshaft / Driveline) Repair / Service
Your vehicle’s axle, CV joint, and driveshaft components are integral to the performance and drivability of your vehicle.
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Belts and Hoses
Your vehicle’s belts and hoses play crucial roles in functional operations, and have shorter life spans compared to other components in your car, so it’s important to have them checked regularly.
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Brake System Diagnostics / Service / Repair / Replace
A fully functioning brake system is essential to your safety, the safety of your passengers, and the safety of other drivers on the road.
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Climate Control AC and Heating System Diagnostics / Repair
During an AC diagnostic, our highly-trained technicians will inspect the belts for cracks, the compressor for leaks, the electrical components for connectivity, and the entire system for low pressure.
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Engine Cooling System Diagnostics / Service / Repair
Your vehicle’s differential, primarily responsible for routing and regulating power between wheels, helps you maintain control while you turn at different speeds.
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Differential Repair / Service
Whether your car or truck has four-wheel drive, front wheel drive, or rear wheel drive, your vehicle’s differential will experience heavy wear and tear over time, especially with extreme driving or tougher terrain.
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Electrical & Electronic Diagnostics / Service / Repair
Whether you have a problem with your headlights, turning signals, motor-driven accessory units, electrical wiring, or any other electrical system, you can count on our team to get you back on the road quickly and safely.
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4-Wheel Drive System Diagnostics / Service / Repair
Properly functioning four wheel drive systems allow all four wheels on a vehicle to spin simultaneously, resulting in a safe, smooth, and consistent ride.
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Starting and Charging System Repairs / Serivces / Diagnostics
Your vehicle’s starting and charging systems are complex, and one bad link between them can render the entire electrical system useless.
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Steering and Suspension Diagnostics / Service / Repair
Properly functioning steering and suspension systems maintain comfortable riding conditions and help you maintain control of your vehicle at all times.
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Minor Service (Oil Change)
An oil change is an easy and inexpensive way to maintain the health of your car or truck.
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Major Service – Fuel Filter, Air Filter, Lube Doors / Window / Hinges
We recommend having the commonly neglected major services completed on your vehcile once a year or every ten to twelve thousand miles.
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HVAC System Service / Cabin Air Filter
Having your vehicles HVAC system serviced will positivly impact the efficiency of the heating and cooling system in your car, not to mention the air quality.
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Automatic Transmission Fluid Service
Over time, transmission fluid picks up dirt and grim and it is important to have a the fluid serviced to prevent severe damage to your transmission.
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Brake Fluid Exchange / Service
Your brake fluid should be clear or at least translucent, if you notice a brown color, it means you should have your fluid flushed.
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AC Refrigerant System Service
Cooling system services will keep your car running at its peak temperature and help avoid costly repairs.
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Power Steering Fluid Exchange / Service
If you notice any difficulty steering your vehicle, it is time to have your power steering fluid checked.
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Timing Belt Replacement
Your vehicles timing belt should be replaced about every five years to avoid engine damage if the belt should break.
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Cooling System Service
Proper auto air conditioning system services will keep you comfortable and safe while in your vehicle.
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Tire Rotation Service
Scheduled tire rotations will give your tire longer tread life, imrove gas mileage, and increase tire performance.
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Shocks / Strut Replacement Service
If your car ride is getting increasingly bumpy or you feel your vehicle pulling in a certain driection it is time to have your shocks and struts checked.
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Clutch Fluid Exchange / Service
Clutch fluid is brake fluid, but it plays an important role in the operation of the clutch because the fluid is stored in the clutch master cylinder.
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Rear Differential Fluid Service
The differential needs to be properly lubricated in order to stay strong and to keep the wheels turning at different speeds, while still providing power to your vehcile.
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Transfer Case Fluid Service
The transfer case fluid should be changed regularly to reduce the chance of any drivability related concerns, this will prevent a future differential replacement.
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Manual Transmission Fluid Service
Manual transmissions use a more standard oil, but still need regular fluid maintenance to extend the life of the transmission.
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Front Differential Fluid Service
Your differential job is to compensate for the differences in wheel speed when turning, so it is important to make sure that the fluid is clean to keep you safe on the road.
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Windshield Wiper Blades
Wiper blades need to be checked regularly, hot air can dry and crack the blades leaving them ineffective when they are needed.
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Battery Connection Service and Replacement
Battery cables and terminals provide the necessary electrical path to transfer the battery power to the entire vehicle, so replacing older cables will provide longer battery life and alternator operation.
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DEQ Checks
Our thorough DEQ checks help ensure your vehicle is properly maintained and your emission control systems comply with EPA regulations.
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No Matter the Model, We’ve Got You Covered
  • Ford Diesel Repair
  • Dodge Diesel Repair
  • Chevrolet Diesel Repair
  • GMC Diesel Repair
  • VW TDI Diesel Repair
  • Sprinter Diesel Repair
  • Jeep Liberty Repair
  • Jeep Repair
  • RAM Truck Repair
  • Subaru Repair
  • And many more!
Quality Auto Repair for Portland OR & Beyond!
  • Portland OR
  • Vancouver WA
  • Oregon City OR
  • Salem OR
  • Beaverton OR
  • Hillsboro OR
  • Northeast Portland
  • North Portland
  • Gresham OR
  • Clackamas OR
  • Tigard OR
  • Tualatin OR
  • Lake Oswego OR
  • West Linn OR
  • Milwaukie OR
  • Forest Grove OR
  • Troutdale OR
  • Camas WA
  • Longview WA
  • And surrounding areas!
Get Back on the Road Quickly & Safely
Partner with us and we’ll get right to the root of your vehicle’s problem rather than just treat the symptoms.
Give Us a Call
Talk with one of our service advisors to get your questions answered and set a convenient time to bring your car in for inspection.
Bring Your Car In
We’ll give you repair options based on our thorough testing, so you can make a careful and fully-informed decision.
We’ll Handle the Rest
We’ll get the job done right and provide a detailed report of the work done, including a list of future repairs to keep in mind.
I had extensive work done to a more than 20 year old Dodge 3500. Front end rebuild, engine tune, fuel system clean and flush, brake system flush and adjust and the list goes on. The price was reasonable given the amount of work done. The attention to detail and level of service was exemplary. The truck drives like new - much improved handling and performance. Highly recommended.

Dave A., Google Review

AG Automotive Service
5
2021-04-14T11:13:36-07:00

Dave A., Google Review

I had extensive work done to a more than 20 year old Dodge 3500. Front end rebuild, engine tune, fuel system clean and flush, brake system flush and adjust and the list goes on. The price was reasonable given the amount of work done. The attention to detail and level of service was exemplary. The truck drives like new - much improved handling and performance. Highly recommended.
I took my 2008 Chevy Duramax into AG Automotive when it was having some hard start and engine misfire issues. Turns out I needed new glow plugs and also had some bad wiring issues. AG took care of my truck quickly and even ended up saving me some money off the original estimate. AG stayed in constant communication with me while my truck was there and took care of it quickly and professionally. AG had been recommended to me based on their Diesel expertise and they lived up to their billing. The cost and professionalism were just an added bonus. Highly recommend these guys for Diesel repair and now that I know they also do gas vehicles, I'll be bringing in my girlfriend's Jetta from now on. Thanks AG!

Mark M., Yelp Review

AG Automotive Service
5
2021-04-14T11:25:09-07:00

Mark M., Yelp Review

I took my 2008 Chevy Duramax into AG Automotive when it was having some hard start and engine misfire issues. Turns out I needed new glow plugs and also had some bad wiring issues. AG took care of my truck quickly and even ended up saving me some money off the original estimate. AG stayed in constant communication with me while my truck was there and took care of it quickly and professionally. AG had been recommended to me based on their Diesel expertise and they lived up to their billing. The cost and professionalism were just an added bonus. Highly recommend these guys for Diesel repair and now that I know they also do gas vehicles, I'll be bringing in my girlfriend's Jetta from now on. Thanks AG!
5
2
AG Automotive Service
Don’t Second-Guess the Condition of Your Vehicle
Many auto owners struggle to know if the right work was done the right way on their car. As a courtesy, we provide digital vehicle inspections and photos so you can quickly and easily see what our experienced, professional technicians are seeing. Overall, we go the extra mile to help you make informed decisions on the repair and maintenance plan of your vehicle, so you can drive with confidence every time you get behind the wheel.
Accurate Diagnostics
Trustworthy Recommendations
Quality Workmanship