Free Diagnostic, Transmission Maintenance, Transmission Repair, Free Diagnostic, Transmission Maintenance, Transmission Repair, Free Diagnostic, Transmission Maintenance, Transmission Repair

1877 South Old Hwy 94
St. Charles, MO 63303
Phone: (636) 493-6777



Computerized Engine Analysis

Your modern vehicle's engine is a highly sophisticated piece of equipment. The days of your father's gas-guzzler are long gone—instead, Federal Exhaust Emission and Fuel Economy regulations demand that today's vehicles be equipped with electronic engine control systems, to curb carbon emissions and increase fuel efficiency. With technically-advanced control systems taking the place of simple engine components, common maintenance services such as tune-ups are also a thing of the past. Regular services (such as spark plug and filter replacements) are still required, as well as a computerized analysis of your vehicle's control computer. Our factory-trained technicians are here to provide these basic services.

Here's how your modern vehicle's control computer operates:

A network of sensors and switches convert and monitor engine operating conditions into electrical signals. The computer receives this information, and, based on information and instructions coded within this savvy computer program, commands are sent to three different systems: ignition, fuel, and emission control. Whenever a problem arises (as seen by that nagging "check engine" light), our service pros check whatever command is prompted, in addition to the status of your engine control computer and sensors. That way you'll know if your vehicle's performance is caused by a real problem, or just a sensor/computer issue.

Here's a brief overview of your vehicle's sensory components:
  • - Mass airflow sensor
  • - Throttle position sensor
  • - Manifold absolute pressure sensor
  • - Coolant temperature sensor
  • - Exhaust oxygen sensor
  • - Crankshaft position sensor
  • - Camshaft position sensor
Transmission Maintenance

For those of you who aren't mechanically-savvy, you probably still understand that transmission problems are among the most expensive repairs required for your vehicle. That's because your transmission is a complex system of gears that transmit mechanical power to your engine, ultimately determining the rate of speed you travel. Transmissions convert this power from the engine so that it can supply high torque at low speeds, in addition to selecting which gears are appropriate based on the driving conditions. This is especially true with automatic transmissions—by far the most popular transmissions found in the US. Rather than using a clutch to engage the transmission, automatic transmissions use a torque converter (between the engine and transmission) to control the number of gears when driving. Supplying the power to regulate gear action is a demanding task, which is why it's important for you to contact us, your transmission service specialists. Here are some of the essential maintenance tasks we complete:

  • Drain transmission and torque converter
  • Refill Automatic Transmission Fluids (ATF) with new fluid

Transmission problems typically arise when regular service is neglected. When fluids aren't properly changed, heat caused from mileage friction results in rough shifting, accelerated wear, and even complete failure. That's why it's essential that you turn to us to make sure that your transmission is lubricated and cooled by the finest quality transmission fluids, installed by our service professionals.

Transmission Repair


Diagnose, Remove, clean, and rebuild your transmission. Two Day Service in most cases.
Automatic transmissions are found in most all types of vehicles today, including heavy trucks and equipment, as well as all types of lighter cars and trucks.
It's important to keep fluid in your transmission at all times! This is the best method to avoid transmission problems. Transmission cooler lines are a big source of leaks. Check them and check your fluid regularly!
Some problems can be fixed without even removing your transmission. If you suspect a problem, call us today!
Drive Shaft Repair


Universal joint installation and replacement, drive shaft replacement.
We do custom driveshafts!
Differential Service


We replace damaged gears and fluid. Whirring noise only while decelerating at any or all speeds is most likely caused by bad pinion bearings or loose pinion bearing preload, and almost never by bad ring and pinion gears.
A howl or whine during acceleration over a small or large speed range is usually caused by worn ring and pinion gears or improper gear set up.
Rumbling or whirring at speeds over about 20 mph can be caused by worn carrier bearings. The noise may change while turning.
Regular clunking every few feet may indicate broken ring or pinion gears.
Banging or clunking only on corners can be caused by broken spider gears, lack of sufficient posi-traction lubrication, or worn posi-traction clutches.
A low rumble while turning may indicate bad wheel bearings.
A steady vibration that increases with the vehicle’s speed can be caused by worn u-joints or an out of balance driveshaft.
Clunking only when starting to move or getting on and off the gas might be loose yokes, bad u-joints or worn transfer case or transmission parts.

Home of the 975

Complete Overhauled Transmission

  • Diagnostic
  • Master Overhaul Kit
  • All Damaged Hard Parts
  • Automatic Transmission Fluid
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Free Diagnostic, Torque Converter,  Transmission Fluid

Free Diagnostic, Torque Converter,  Transmission Fluid


Free Diagnostic, Torque Converter,  Transmission Fluid