Engine Diagnostics in Urbana, OH

While an illuminated check engine light can be concerning, that little signal is your car's way of communicating a problem. But what does it mean? At Apex Transmission and Auto, our expert technicians can find you the answers to your questions with our advanced engine diagnostic service.

Advanced Diagnostic Tools

We use cutting-edge diagnostic tools to find trouble codes and pinpoint the exact cause of the issue, whether it's a minor sensor malfunction or a more complex problem. No more guessing games or unnecessary repairs.

We'll explain everything clearly and provide a fair repair estimate before any work begins. The result? You get a faster diagnosis and a targeted solution, and ultimately, save time and money in the long haul.

Care for Your Engine

Engine diagnostics involve more than just reading codes – it's about understanding the broader context of your vehicle's performance. Our technicians will not only look into the check engine light but also assess related systems. By examining these interconnected components, we can provide a holistic evaluation of your engine’s condition. Trust us to keep your engine in optimal condition.

Engine Diagnostics Near Me

If you’re in search of engine diagnostics in Urbana, OH, turn to the pros at Apex Transmission and Auto. Schedule an engine diagnostic service by calling (937) 772-4009, filling out our online form, or visiting us at 707 South Edgewood Avenue! We'll get you back on the road quickly and confidently.

Precision Engine Diagnostics – Keeping Urbana drivers on the Road.

Understanding the Solenoid Switched Valve in the 68RFE

May 29, 2026

Understanding the Solenoid Switched Valve in the 68RFE Transmission: Common Problems & How Apex Transmission and Auto Fixes Them The 68RFE transmission is a popular choice for many Ram trucks, known for its reliability and smooth shifting. However, like any transmission, it has its weak points — one of the most common being issues related to the solenoid switched valve . At Apex Transmission and Auto , we specialize in diagnosing and resolving these problems using industry-leading solutions like the TransGo valve body kit. What Is the Solenoid Switched Valve? The solenoid switched valve is a critical component inside the 68RFE valve body. It works with the transmission’s solenoids to regulate hydraulic pressure and control the engagement of various clutches and bands. Proper function of this valve ensures smooth and timely gear shifts. Common Problems Caused by the Solenoid Switched Valve When the solenoid switched valve begins to fail or malfunction, you might notice a range of issues, such as: Harsh or delayed shifts: The transmission may hesitate or shift roughly between gears, especially during 2-3 or 3-4 shifts. Transmission slipping: Inconsistent hydraulic pressure can cause the transmission to slip under load. Check Engine Light and transmission error codes: Error codes related to solenoid malfunctions or pressure irregularities often point back to the solenoid switched valve. Transmission overheating: Improper valve function can increase heat generation, risking damage to internal components. How Is the Solenoid Switched Valve Problem Fixed? At Apex Transmission and Auto , we know that simply replacing solenoids or the valve body isn’t always enough. The solenoid switched valve requires precision reconditioning and upgrades to restore reliable function. Our technicians utilize the TransGo valve body kit , a high-quality aftermarket solution specifically designed to improve hydraulic control and shift quality. The TransGo kit includes: Precision-machined components to replace worn or damaged valves Enhanced springs and seals for better pressure management Upgraded valves that reduce common failure points By installing the TransGo kit and performing a full valve body rebuild, we eliminate the root causes of many solenoid switched valve problems, resulting in smoother shifts, improved durability, and extended transmission life. Why Choose Apex Transmission and Auto? Expert transmission repair and rebuild specialists with years of experience working with 68RFE transmissions. Use of premium transmission parts like the TransGo valve body kit for lasting repairs. Comprehensive, in-house transmission diagnostics and rebuild services ensuring quality and reliability. If you’re experiencing transmission issues like harsh shifting, slipping, or error codes, don’t wait until it worsens. Contact Apex Transmission and Auto today to schedule a transmission inspection and learn how our solenoid switched valve upgrades with the TransGo kit can restore your 68RFE transmission to peak performance. Ready to fix your transmission problems and get back on the road with confidence? Contact Apex Transmission and Auto now for expert 68RFE transmission repair, rebuilds, and upgrades. We’re here to help you drive smooth and strong for years to come!

The dreaded 6l80/90 shudder crisis

May 29, 2026

The Shudder Crisis: What’s Going On with the 6L80E & 6L90? If you own a GM vehicle with a 6L80E or 6L90 transmission, chances are you’ve felt it — that irritating, rhythmic vibration while cruising between 30–50 mph. Known in the performance and repair world as “ The Shudder Crisis ,” this issue is more than just a comfort concern — it’s a warning sign. At the root of the problem is torque converter clutch (TCC) shudder. It’s typically caused by degraded transmission fluid or worn TCC components, but factory tuning also plays a major role. GM’s original torque converter schedule keeps the clutch engaged too early and too often, especially under light load — causing premature wear and frequent shudder. The Real Fix: More Than Just Fluid While upgrading to Mobil 1 LV ATF HP fluid can help reduce shudder, it’s often not enough for long-term reliability. That’s where TransGo’s drop-in valve kit and a Coode-modified tune come in. TransGo TCC Regulator & Boost Valves: These upgrade the hydraulic integrity of the transmission, preventing pressure loss and improving converter clutch control. Code-Mod Tune: Custom tuning recalibrates the torque converter schedule to reduce unnecessary clutch application, minimize heat, and eliminate early lockup. Together, this combo solves the issue at its source — not just masking it. The result? A smoother drive, better longevity, and peace of mind. Dealing with shudder? Don’t wait for major damage. Upgrade with precision hardware and proven tuning. Contact us to learn more.