QDC Auto Repair

QDC Auto Repair QDC Auto Repair We are a full automotive and diesel repair shop located right off I 10 at the Marana exit and next to Marana Auto Body.

We provide great customer service and rates.

🔧 A little behind-the-scenes progress on an EcoBoost timing chain job!This Ford EcoBoost is torn down for a timing chain...
09/10/2026

🔧 A little behind-the-scenes progress on an EcoBoost timing chain job!
This Ford EcoBoost is torn down for a timing chain replacement, and this gives you a pretty good look at what’s actually involved. With the front of the engine opened up, you can see the chains, guides, cam phasers, and valvetrain that all have to work together to keep the engine properly timed.
Timing chain issues can show up as rattling on startup, check-engine lights, timing-related fault codes, poor performance, or eventually much bigger engine problems if ignored.
We’re getting this one put back together the right way and back on the road. 🔧
If you enjoy seeing what actually goes into automotive repairs, give us a follow! We’ll keep sharing the interesting stuff that comes through the shop.
📍 QDC Auto Repair – Marana, AZ
📞 520-395-0435

Your serpentine belt might be trying to tell you something 👀This is a good example of what a worn serpentine belt can lo...
09/04/2026

Your serpentine belt might be trying to tell you something 👀
This is a good example of what a worn serpentine belt can look like. If you look closely, you can see cracking throughout the ribs of the belt.
The serpentine belt is responsible for driving several important accessories on the engine, and as the rubber ages it can dry out, crack, and eventually fail. A broken belt can quickly turn a simple maintenance item into a vehicle that leaves you stranded.
This is exactly why we check belts during our inspections. 🔧 Sometimes catching a small maintenance item early can save you a headache later.
📍 QDC Auto Repair – Marana, AZ
📞 520-395-0435

A slow crank doesn’t always mean the starter or batteries are bad. 👀This diesel came in cranking slower than it should, ...
08/26/2026

A slow crank doesn’t always mean the starter or batteries are bad. 👀
This diesel came in cranking slower than it should, and we found this battery cable end heavily damaged from corrosion. As corrosion works its way into the connection, it creates resistance and makes it harder for all that amperage to get where it needs to go.
On a diesel, where the starter needs a LOT of current, a connection like this can make a big difference. ⚡
Sometimes the problem isn’t a complicated electrical failure—it’s simply a bad connection hiding right in front of you.
If your diesel is cranking slower than normal, don’t wait until it leaves you stranded. Give us a call and we’ll get it checked out! 🔧
📍 QDC Auto Repair – Marana, AZ
📞 520-395-0435

🛑 There’s not much brake pad left on this one!This picture was taken with everything still installed on the vehicle, loo...
08/21/2026

🛑 There’s not much brake pad left on this one!
This picture was taken with everything still installed on the vehicle, looking through the back of the brake caliper. You can see just how thin the brake pad has gotten compared to where it should be.
Brake pads wear down gradually, so it can be easy to miss until you start hearing squealing or grinding. Once they get this low, there isn’t much material left before you risk damaging the brake rotors and turning a normal brake job into a more expensive repair.
This is exactly why we measure brake pad thickness during our inspections. Sometimes you can catch a problem before the car starts telling you about it. 🔧
When was the last time you had your brakes checked? 👀
📍 QDC Auto Repair
11812 N Tangerine Business Loop, Marana, AZ
📞 520-395-0435

08/20/2026

🔊 Turn the sound up for this one!
This wheel bearing/hub assembly was already removed from the vehicle when we took this video, but you can still hear just how bad it was.
One of our techs is simply spinning the hub by hand, and you can clearly hear the rough, grinding noise coming from inside the bearing. A good wheel bearing should rotate smoothly and quietly—definitely not sound like this. 😬
On the vehicle, a failing wheel bearing will usually create a humming, growling, or grinding noise that gets louder as vehicle speed increases. Sometimes the noise will also change when turning left or right.
This one was definitely ready for retirement. 😂
Turn your volume up—would this noise have you worried? 👇
📍 QDC Auto Repair
11812 N Tangerine Business Loop, Marana, AZ
📞 520-395-0435

⛽ If you smell gas around your vehicle, don’t ignore it!This vehicle came in with a strong fuel smell, and once we got a...
08/19/2026

⛽ If you smell gas around your vehicle, don’t ignore it!
This vehicle came in with a strong fuel smell, and once we got access to the top of the fuel tank, we found the problem pretty quickly.
The fitting on top of the fuel pump assembly had cracked, allowing fuel and fuel vapors to escape from the top of the tank. The first photo shows the crack in the original assembly, and the second shows the new assembly installed and ready to go.
It’s a relatively small crack, but definitely not a small problem when gasoline is involved. 😬
We replaced the complete fuel pump assembly, got everything sealed back up, and took care of the fuel leak and smell.
If you started smelling gas around your vehicle, would you know where to look first? 👇
📍 QDC Auto Repair
11812 N Tangerine Business Loop, Marana, AZ
📞 520-395-0435

08/18/2026

Well… this is what happens when a ball joint completely gives up 😬
This customer unfortunately found out the hard way. The upper ball joint completely separated from the control arm while they were driving, causing the wheel to fall over and leaving the vehicle needing to be towed into the shop.
In the video, you can see just how bad it was—the ball joint basically falls right out of the control arm with nothing holding it in place anymore.
Ball joints usually give some warning as they wear, like clunking over bumps, loose or wandering steering, uneven tire wear, or excessive play in the suspension. But once they reach this point, there’s no driving it anywhere.
Definitely one of those “you don’t see that every day” moments at the shop. 😂
Have you ever had a suspension part fail on you while driving? 👇
📍 QDC Auto Repair
11812 N Tangerine Business Loop, Marana, AZ
📞 520-395-0435

💡 Sometimes the bulb isn’t the problem!This vehicle came in with a headlight that wasn’t working properly. During our di...
08/14/2026

💡 Sometimes the bulb isn’t the problem!
This vehicle came in with a headlight that wasn’t working properly. During our diagnosis, we found the issue wasn’t the headlight itself—it was a burnt terminal inside the electrical connector.
As you can see in the photo, one of the terminals had overheated and started to melt the connector. A poor connection creates resistance, which generates heat and can eventually cause the circuit to fail completely.
Electrical issues like this are a great example of why proper diagnosis matters. Simply replacing the bulb wouldn’t have fixed the actual problem.
🔧 At QDC Auto Repair, we take the time to find the root cause instead of guessing and replacing parts.
📍 11812 N Tangerine Business Loop, Marana, AZ
📞 520-395-0435
Ever had a headlight that kept going out even after replacing the bulb? 👇

🔥 A little upgrade for this brand-new 2026 Duramax!This truck came into QDC Auto Repair for a Banks Ram-Air Intake insta...
08/10/2026

🔥 A little upgrade for this brand-new 2026 Duramax!
This truck came into QDC Auto Repair for a Banks Ram-Air Intake installation, and the before-and-after difference under the hood speaks for itself!
The factory intake system gets the job done, but the Banks system is designed with a much larger, less restrictive intake path to help the Duramax breathe easier. Improved airflow can help reduce restriction, improve throttle response, and support better overall performance—plus, it looks great under the hood.
We don’t just handle repairs and diagnostics at QDC. We can also help with diesel upgrades and aftermarket performance parts for your Duramax, Cummins, or Power Stroke.
Thinking about upgrading your truck? Give us a call and we’d be happy to go over some options with you!
📍 QDC Auto Repair
11812 N Tangerine Business Loop
Marana, AZ
📞 520-395-0435
Which looks better—the factory setup or the Banks intake? 👇

⛽ A tiny crack can lead to a big problem.This vehicle came in with fuel system concerns, and after diagnosing the issue,...
08/04/2026

⛽ A tiny crack can lead to a big problem.
This vehicle came in with fuel system concerns, and after diagnosing the issue, we found the culprit—a cracked fuel pump assembly.
The crack shown in the photo had developed on the top of the fuel pump module. Even though it may not look like much, cracks like this can cause fuel pressure loss, fuel leaks, hard starting, extended crank times, EVAP system faults, and even no-start conditions.
Many people assume a fuel pump has simply “gone bad,” but it’s important to identify why the problem occurred. A cracked fuel pump assembly can create symptoms that mimic other fuel system failures, making proper diagnostics essential.
At QDC Auto Repair, we don’t guess—we diagnose. By identifying the root cause, we make sure the correct repair is performed the first time, saving our customers time and money.
If your vehicle is experiencing hard starts, fuel odors, poor performance, or intermittent fuel system issues, let our experienced team take a look before a small problem turns into a major repair.
📍 QDC Auto Repair
11812 N Tangerine Business Loop
Marana, AZ
📞 520-395-0435
Quality diagnostics. Honest repairs. Done right the first time. 🔧⛽

Address

11812 N Tangerine Buisness Loop
Red Rock, AZ
85658

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+15203950435

Website

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