The Diesel Doctor

The Diesel Doctor Been in business since 1980. Automotive repair shop in El Cajon specializing in diesel repair, and any other automotive repairs. Opened up Diesel Doctor in 1981.

I have finished Diesel School in 1980. First it was mobile for 5 years then I opened the shop for ten years. And went back to be mobile ever since. I have worked with both gasoline and diesel engines, all small engine diesels from marine to transport trucks, automotive. Now specialized in Fords, Chevys and Dodges, emergency equipment, fleets and privately own vehicles. Familiar with MTS Inspections and CHP inspections. I carry ASE, Brake and Light Certificates, Just finished GM tech class.

Ever wondered what keeps those medium-duty trucks running smoothly on Bostonia roads? It's often a combination of proact...
09/25/2026

Ever wondered what keeps those medium-duty trucks running smoothly on Bostonia roads? It's often a combination of proactive maintenance and expert diagnostics, ensuring every component is performing at its best.

Just another day in the shop! Our team is deep into a turbo rebuild, making sure your mid-size commercial vehicles run l...
09/24/2026

Just another day in the shop! Our team is deep into a turbo rebuild, making sure your mid-size commercial vehicles run like a dream. 🛠️ Curious about what goes into keeping your fleet on the road? Drop by our shop at 1301 Pepper Dr Suite C, El Cajon, CA 92021, give us a call at (619) 749-9286, or visit our website at https://www.thedieseldoctorsd.com/ to learn more!

Did you know that a properly maintained diesel engine can last for over 300,000 miles? Regular inspection of critical co...
09/23/2026

Did you know that a properly maintained diesel engine can last for over 300,000 miles? Regular inspection of critical components, like those pictured, is essential for achieving such longevity.

09/22/2026

Putting out one fire at a time! Found this massive electrical draw on this 2022 Jeep Gladiator 3.0L that would kill a new battery in minutes. On to the next! 😤💪

Ever have one of those days where your diesel just won't cooperate, leaving you stranded and frustrated? We understand. ...
09/22/2026

Ever have one of those days where your diesel just won't cooperate, leaving you stranded and frustrated? We understand. At The Diesel Doctor in Bostonia, we aim to make those stressful situations a smooth experience. You can expect a friendly team dedicated to getting you back on the road with expert care. Give us a call at (619) 749-9286 or stop by 1301 Pepper Dr Suite C, El Cajon, CA 92021 to see how we can help.

Fact: Over 70% of medium-duty trucks are diesel-powered in the United States. These vehicles rely on precise diagnostics...
09/21/2026

Fact: Over 70% of medium-duty trucks are diesel-powered in the United States. These vehicles rely on precise diagnostics and maintenance for optimal performance. Comprehensive checks, like those performed with advanced equipment, ensure their engines remain efficient and reliable for commercial operations.

Is your medium-duty truck acting up when you least expect it? Don't let engine troubles sideline your business. Regular ...
09/18/2026

Is your medium-duty truck acting up when you least expect it? Don't let engine troubles sideline your business. Regular maintenance is key to keeping your rig running smoothly. Need a check-up or a fix in Bostonia, CA? We're here to help. Visit us at 1301 Pepper Dr Suite C, El Cajon, CA 92021 or give us a call at (619) 749-9286. Learn more on our website: https://www.thedieseldoctorsd.com/

The proper maintenance of mid-size commercial vehicles is crucial for operational efficiency and longevity. Regular chec...
09/17/2026

The proper maintenance of mid-size commercial vehicles is crucial for operational efficiency and longevity. Regular checks of fluid levels, engine components, and braking systems contribute to preventing unexpected downtime.

Ever wonder what keeps our team strong and ready for any diesel challenge? It's dedication, both on and off the job! 💪 O...
09/16/2026

Ever wonder what keeps our team strong and ready for any diesel challenge? It's dedication, both on and off the job! 💪 Our guys believe in building strength, much like they build trust with every brake job and oil change they perform here in Bostonia. It's all about being reliable and always ready to go the extra mile.

Does your diesel engine's performance feel a bit sluggish? The image shows critical valve train components, essential fo...
09/15/2026

Does your diesel engine's performance feel a bit sluggish? The image shows critical valve train components, essential for efficient combustion. Proper maintenance of these parts ensures your engine runs smoothly and powerfully. To keep your diesel in top shape, trust the experts. Visit us at 1301 Pepper Dr Suite C, El Cajon, CA 92021, call (619) 749-9286, or explore our services at https://www.thedieseldoctorsd.com/.

Address

1301 Pepper Drive Suite C
El Cajon, CA
92021

Opening Hours

Monday 7:30am - 4:30pm
Tuesday 7:30am - 4:30pm
Wednesday 7:30am - 4:30pm
Thursday 7:30am - 4:30pm
Friday 7:30am - 4:30pm

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