Master Automotive Training

Master Automotive Training Auto success through personalized training. | We put students first! |🛠️ Here at MAT we strive for excellence, and integrity.

Master Automotive Training Has Came Together to Provide the best learning experience for every student that attends our Institute. Our Staff is equipped with well over 15 years experience in the smog and automotive field. We have gathered personal experience, in the automotive field as well as the classroom. We have put together an environment in which the students can have that comfort of an amaz

ing learning environment. We strive on providing the best up to date equipment, and sources for learning. Our number one goal at Master Automotive Training is to serve and give the best education to our future technicians.

08/20/2026

NTC and PTC thermistors use the same basic circuit—but their resistance curves work in opposite directions.

NTC: temperature rises → resistance drops.

PTC: temperature rises → resistance increases.

Both can use a 5V reference, pull-up resistor, and voltage-divider circuit. But if you don't know which type you're testing, the voltage reading can be easy to misinterpret.

PTC thermistors are especially useful in self-regulating heating applications because increasing resistance reduces current as temperature rises.

Here's the technician question: When you see a high or low sensor voltage, do you first identify whether the circuit is NTC or PTC?

Drop your diagnostic approach in the comments. 👇

Explore upcoming hands-on training: https://campscui.active.com/orgs/MasterAutomotiveTraining?orglink=camps-registration #

🎉 Congratulations to Jose Angel Castro, Francisco Martinez, and Jonathan Romero!They successfully passed their automotiv...
08/20/2026

🎉 Congratulations to Jose Angel Castro, Francisco Martinez, and Jonathan Romero!

They successfully passed their automotive license exams—a huge achievement and an important step forward in their careers. 👏🔧

Your hard work, dedication, and commitment to learning are paying off. Keep growing, keep learning, and keep moving forward!

08/19/2026

Can you calculate manifold vacuum using your MAP and BARO readings?

Oscar Gomez breaks it down with a simple formula technicians can remember in the bay:

BARO − MAP = Vacuum

For example, 29 inHg BARO − 9 inHg MAP = 20 inHg of manifold vacuum.

This quick calculation can help you better understand what your scan tool is telling you and build confidence when diagnosing engine performance concerns. Oscar also explains how altitude changes your readings.

What MAP or vacuum reading do you typically see at warm idle? Drop your number in the comments. 👇

Looking to sharpen your diagnostic skills? Explore upcoming hands-on training with Master Automotive Training.

Register for Classes: https://campscui.active.com/orgs/MasterAutomotiveTraining?orglink=camps-registration #

08/18/2026

Why does an NTC temperature sensor show HIGH voltage when cold and LOW voltage when hot?

It comes down to resistance.

An NTC thermistor has an inverse relationship with temperature: cold = high resistance, hot = low resistance.

The sensor and the PCM's pull-up resistor create a voltage divider. When cold, the high sensor resistance keeps the signal closer to the 5V reference. When hot, resistance drops and the signal moves closer to ground.

This same principle is used in ECT, IAT, fuel temperature, and other sensors.

Do you explain NTC sensors using the voltage-divider circuit, or do you teach it another way? 👇

Register for upcoming training: https://campscui.active.com/orgs/MasterAutomotiveTraining?orglink=camps-registration #

Real students. Real results. 🔧🎓From passing ASE A4 and A6 exams to gaining practical automotive knowledge, our students ...
08/15/2026

Real students. Real results. 🔧🎓

From passing ASE A4 and A6 exams to gaining practical automotive knowledge, our students are putting their training to work. Thank you to Boa, Michael H, and for the incredible feedback!

Ready to sharpen your automotive diagnostic skills and prepare for your next ASE test?

📍 Rancho Cucamonga, CA
🌐 SmartAutoTraining.com

08/14/2026

The ohmmeter says the circuit is good. But the component still doesn't work. Now what?

That's where continuity testing can fool a technician.

A circuit may show near-zero resistance with no load, yet develop a major voltage drop once real current starts flowing. That's why continuity testing is useful for quick triage—but load testing and voltage drop testing reveal how the circuit actually performs under operating conditions.

The best technicians don't abandon one test for another. They understand what question each test can answer.

Which do you reach for first: continuity testing or voltage drop testing—and why?

Drop your answer below. 👇

Register for upcoming hands-on training: https://campscui.active.com/orgs/MasterAutomotiveTraining?orglink=camps-registration #

🚗 Now Hiring in San Diego!Miramar Smog and Vehicle Safety is looking for a qualified Smog Check / VSSI Inspector to join...
08/14/2026

🚗 Now Hiring in San Diego!

Miramar Smog and Vehicle Safety is looking for a qualified Smog Check / VSSI Inspector to join the team. If you’re an experienced automotive professional looking for a great work environment, competitive pay, and growth opportunities, this could be your next opportunity!

📍 7645 Carroll Rd, San Diego, CA 92121
📞 Contact the shop for more information.
🌐 https://share.google/LAC9E8ktHpvyvJFWl

Join the team and keep San Diego driving!

08/13/2026

The PCM commanded it. But did the injector actually do it?

That's the diagnostic question technicians need to ask.

A commanded injector pulse width only tells you what the PCM requested. It doesn't prove the injector physically opened, closed, or delivered the correct amount of fuel.

That's where a lab scope can reveal what scan data can't—including the injector's flyback pattern and clues about pintle closure.

Oscar Gomez teaches technicians to stop confusing commanded operation with confirmed operation. That mindset can make a major difference when diagnosing fuel delivery problems.

Have you used a lab scope to verify injector operation? What waveform feature do you look for?

Check out upcoming hands-on training:
https://campscui.active.com/orgs/MasterAutomotiveTraining?orglink=camps-registration #

🎉 Congratulations to Brayan Ramirez, Jorge Galindo, and Roberto Silva Perez on earning their automotive licenses! 🏆Your ...
08/13/2026

🎉 Congratulations to Brayan Ramirez, Jorge Galindo, and Roberto Silva Perez on earning their automotive licenses! 🏆

Your hard work and dedication paid off. Keep learning, keep growing, and keep moving forward! 🔧👏

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