5 Reasons Your Transmission Won’t Shift
June 3, 2025

June 3, 2025

5 Reasons Your Transmission Won’t Shift Gears

A cut in half model of a car engine on display

Few things are more frustrating than turning the key, hitting the gas, and realizing your car won’t shift into gear. Whether it's stuck in park, won’t move out of first gear, or grinds when shifting, transmission issues are serious—and they usually get worse over time if ignored.

At Superior Transmissions and Auto, we specialize in diagnosing and repairing transmission problems. Here's a breakdown of the top 5 reasons your transmission might not be shifting gears properly:

1. Low or Contaminated Transmission Fluid
Transmission fluid is the lifeblood of your transmission. It lubricates, cools, and helps create the hydraulic pressure needed to shift gears smoothly. If you're low on fluid—or if the fluid is burnt, dirty, or old—your transmission may struggle or refuse to shift altogether.

Signs to look for:

Sluggish shifting

Overheating transmission

Dark or burnt-smelling fluid

Quick Tip: Check your transmission fluid level and condition regularly. If it's low, topping it off might help—but if it's dirty or smells burnt, it’s time for a full fluid change or flush.

2. Faulty Shift Solenoids
Modern automatic transmissions rely on electronic shift solenoids to control gear changes. If one of these fails, the transmission may get stuck in a single gear or skip others entirely.

Symptoms of bad solenoids:

Stuck in neutral or limp mode

Delayed gear engagement

Transmission warning light

This is a common issue in electronically controlled transmissions, and one that requires proper diagnostics to pinpoint.

3. Worn or Damaged Clutch (Manual & Some Automatics)
In manual transmissions—and some automatic transmissions with dual-clutch setups—a worn-out clutch can prevent the vehicle from shifting properly. If the clutch isn't disengaging fully, you’ll likely hear grinding when trying to shift, or it may refuse to engage the gear entirely.

Signs of clutch issues:

Grinding noise when shifting

High clutch pedal engagement

Burning smell or slipping under load

If you’re experiencing these, your clutch may be due for a replacement.

4. Transmission Control Module (TCM) Failure
The TCM is like the brain of your transmission. It uses data from sensors to determine when and how to shift gears. If the module fails or receives incorrect signals from sensors (like the throttle position or vehicle speed sensors), the transmission may act erratically—or stop shifting altogether.

What to expect:

Erratic or harsh shifting

Transmission stuck in one gear

Check engine or transmission warning lights

Diagnosing TCM or sensor issues typically requires specialized scan tools.

5. Internal Transmission Damage
If your transmission still won’t shift after checking fluid, solenoids, and electronics, the problem may lie within the transmission itself. Broken bands, worn gears, or a failing torque converter can all lead to gear shift failure.

Warning signs:

Metal shavings in fluid

Whining or clunking noises

Vehicle won’t move in gear

Internal damage often requires a full rebuild or replacement—but catching issues early can sometimes prevent more serious (and expensive) repairs.

Final Thoughts
If your transmission won’t shift, it’s not something to ignore. What starts as a small problem—like low fluid—can quickly snowball into a complete transmission failure. The good news? Most issues are fixable if caught early.

Need help diagnosing your transmission?
At Superior Transmissions and Auto in New Windsor, NY, we offer expert diagnostics, transmission rebuilds, and repairs. Call us today or schedule an appointment online—we’ll help you get back in gear.

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By Taylor Gould September 9, 2025
Don’t Forget the Vehicles on Your To-Do List!
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July 15, 2025
What’s Really Going On If you own a Ford Focus—especially a model from 2012 to 2018—you’ve probably heard the words “transmission issue” more times than you’d like. The heart of most complaints? The DTC, or Dual-Clutch Transmission. At Superior Transmissions & Auto, we see these often and know exactly what makes them tick—and what makes them fail. What is a DTC Transmission, Anyway? DTC stands for Dual-Clutch Transmission. Think of it as a hybrid between a manual and an automatic transmission. It has two clutches—one for odd gears and one for even gears—allowing for faster, smoother gear shifts (in theory). It’s designed for fuel efficiency and performance, but in real-world driving, it often feels anything but smooth. Unlike a traditional automatic that uses a torque converter, the DTC in the Ford Focus behaves more like a computer-controlled manual transmission. It can feel jerky at low speeds, hesitate when shifting, or seem like it’s slipping—especially in stop-and-go traffic. Why the Ford Focus DTC is So Problematic The biggest issues with these transmissions usually boil down to the clutch system and internal actuators. In many cases, the vehicle will: Shudder on acceleration Struggle to find or hold a gear Flash the "Transmission Hot" warning Show DTC codes (diagnostic trouble codes) for clutch actuator failure or internal gear ratio errors Ford has acknowledged many of these problems through service bulletins and extended warranties—but even those come with limits. How We Handle Ford DTC Transmissions At Superior Transmissions & Auto, we don’t just throw parts at these issues. We diagnose them thoroughly to pinpoint exactly what’s going on. Often, the root cause is worn or contaminated clutch packs, failed shift actuators, or broken internal components in the TCM (Transmission Control Module). Here’s how we handle DTC repairs: 1. Complete Diagnostic Scan We start with a full scan of the transmission’s computer to identify stored trouble codes. This gives us insight into clutch position, actuator performance, and gear engagement. 2. Clutch Replacement The most common repair is replacing the dual-clutch assembly. These clutches wear prematurely, especially in traffic-heavy areas. We use upgraded parts and take the time to properly recalibrate everything during reinstallation. 3. Actuator & TCM Checks We test the transmission’s shift actuators and often recommend replacement if there are engagement issues or hesitation. In some cases, the TCM may also need programming or replacement. 4. Adaptive Relearn & Road Testing Once the repair is complete, we perform an adaptive relearn procedure and extensive road testing to ensure the transmission shifts correctly under all driving conditions. A Different Drive—And a Different Kind of Fix Driving a DTC-equipped Focus isn’t like driving a standard automatic—and that’s part of the confusion for many drivers. It’s normal for the car to feel a little “clunky” at low speeds. But grinding, slipping, or delayed shifts? Those are not normal. If you’re dealing with a misbehaving Focus transmission, don’t just live with it. And don’t let someone tell you “it’s just how they drive.” We’ve rebuilt countless DTCs, replaced dozens of clutches, and know these systems inside and out. Bring It to the Experts Not every shop will work on DTCs—some won’t touch them at all. At Superior Transmissions & Auto, we specialize in them. Whether you need a diagnostic, a clutch replacement, or a complete rebuild, we’ve got the tools, training, and experience to get your Focus back on the road—the right way. �55357;�56525; Located in New Windsor, NY �55357;�56507; Schedule your appointment right on our website! �55357;�56615; Trust the shop that knows transmissions inside and out. Superior Transmissions & Auto Bringing transparency—and performance—back to auto repair.
A close up of a gear with a belt attached to it.
July 15, 2025
Why That Matters for Your Car At Superior Transmissions & Auto, we’re proud to say we’re the only shop in the area that rebuilds Continuously Variable Transmissions (CVTs) — and that’s not just a cool brag. It speaks volumes about our experience, our commitment to our craft, and the level of trust you can place in us when your vehicle needs serious work. What Even Is a CVT? A CVT (Continuously Variable Transmission) is not your average transmission. Unlike traditional automatic or manual transmissions, which have a fixed number of gears, a CVT doesn’t have gears at all. Instead, it uses a system of pulleys and a steel belt to provide a seamless range of gear ratios. This allows for smoother acceleration, improved fuel efficiency, and a more consistent driving experience. Sounds great, right? It is — until something goes wrong. Why Most Shops Don’t Touch CVTs Here’s the thing: CVTs are a completely different animal than standard automatics. Rebuilding one isn’t just a matter of replacing worn-out clutches or seals. You need specialized tools, diagnostic software, and, most importantly, in-depth knowledge of how each specific CVT design works — and they vary a lot between manufacturers like Nissan, Subaru, Honda, and Toyota. Most general repair shops — even ones that dabble in transmissions — will tell you flat-out: “We don’t rebuild CVTs.” Why? Complex internals: CVTs rely on precise hydraulic and electronic controls. One wrong move and it’s toast. Lack of training: Most techs aren’t trained in CVT rebuild procedures, especially since many manufacturers don’t even sell internal parts. Special equipment required: You can’t rebuild a CVT with just a socket set and a transmission jack. The tools alone are a barrier. OEM discouragement: A lot of manufacturers push for full replacement instead of repair — leading shops to avoid the risk and effort of a rebuild. Why Superior Can and Does Rebuild CVTs At Superior Transmissions & Auto, we lean into the challenge. We’ve invested in the training, equipment, and expertise to properly rebuild CVTs — and we’ve been doing it successfully. We don’t shy away from complexity — we thrive in it. When other shops say, “It can’t be rebuilt,” we say, “It just hasn’t been rebuilt here yet.” We’ve rebuilt CVTs that other shops wrote off as scrap. In fact, we’ve had customers towed to us after being told their only option was a brand new transmission or a used junkyard transmission — and we were able to save them thousands by rebuilding instead. Ultimately giving them back a better product. The Bottom Line: CVT Trouble? You Found the Right Shop If your car has a CVT and it’s slipping, shaking, or just not moving, you need someone who knows what they’re doing. We’re not just another shop that “does transmissions.” We are transmission specialists — and more importantly, we’re CVT specialists, which is something you won’t find anywhere else around here. We’re here to do the work that others won’t — and we do it right. Give us a call or schedule an appointment online. If it’s got a CVT, we’ve got you covered.
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