Engine and Transmission Repair in Waldorf, MD
At
Bill’s Foreign Auto
in Waldorf, MD, we specialize in comprehensive engine and transmission repair services for foreign and domestic vehicles. Whether you're dealing with a check engine light, poor performance, hard shifting, or fluid leaks, our team uses advanced diagnostics and brand-specific procedures to pinpoint the cause and deliver long-term solutions. From minor repairs to complete overhauls, we provide the mechanical expertise required to keep your powertrain operating reliably.
Engine Diagnostics and Performance Inspections
When an engine begins to misfire, lose power, or trigger warning lights, accurate diagnostics are essential. Our technicians perform full engine system scans, monitor real-time sensor data, and conduct compression and leak-down tests to evaluate internal condition. Whether it’s a failed ignition coil on a Volkswagen, a faulty oxygen sensor on a Honda, or a vacuum leak on a BMW, we isolate the issue before recommending repairs.
We also inspect timing systems—chains or belts—especially at key service intervals. On many foreign vehicles, a worn or misaligned timing component can lead to severe engine damage if ignored. For direct-injection engines, we offer carbon build-up inspections and intake cleaning when drivability problems or poor fuel economy are present.

Transmission Diagnostics and Drivability Issues
Transmission problems often begin subtly—delayed shifts, jerking, slipping, or changes in RPM behavior under load. Using manufacturer-grade scan tools, we evaluate shift patterns, solenoid operation, fluid pressure, and control module data. Whether the issue is mechanical, electrical, or software-related, our team provides a breakdown of what needs to be serviced or replaced.
On automatic transmissions, we service torque converters, valve bodies, and internal clutches. For manual and dual-clutch systems, we inspect clutch disc wear, flywheel condition, and hydraulic actuator performance. If a rebuild is necessary, we disassemble the unit, replace worn components, and reassemble it to meet original specifications.
Engine Rebuilds, Gasket Repairs, and Internal Work
For engines showing signs of deeper internal problems—loss of compression, coolant in oil, knocking, or heavy smoke—we offer partial or full rebuild services. Our process includes replacing piston rings, gaskets, valve seals, bearings, and timing assemblies as needed. We also resurface cylinder heads and check for cracks or warping due to overheating.
On many imports, cylinder head gasket failure is a common problem that leads to overheating or combustion leaks. We follow brand-specific torque specs and sealing procedures, ensuring long-term reliability after reassembly. Our team also addresses valve cover gasket leaks, timing cover repairs, and oil pan reseals—issues often found during routine service.

Transmission Fluid Service and Leak Detection
Transmission fluid condition plays a direct role in shift quality and system longevity. Many European and Asian vehicles are labeled as “lifetime fill,” but under local driving conditions in Waldorf, fluid deterioration can still occur. We perform fluid changes, drain-and-fill procedures, and full flushes when necessary, using fluids that meet or exceed OEM standards.
For vehicles experiencing leaks, we inspect seals, cooler lines, and output shafts. On all-wheel drive models, we also inspect transfer cases and differentials, which may share fluids or contain separate gear oils. Catching these issues early prevents drivetrain damage and avoids more costly repairs.
Mounts, Sensors, and Supporting Components
Powertrain components rely on properly functioning motor and transmission mounts to maintain alignment and reduce vibration. When mounts begin to fail, drivers may feel clunking during acceleration or notice increased engine movement under load. We inspect these components and replace them using application-specific parts to match factory performance.
Additionally, we test crankshaft and camshaft position sensors, throttle actuators, MAP and MAF sensors, and solenoids—systems that often impact drivability and can be overlooked during general maintenance. For modern vehicles with electronic throttle systems, sensor accuracy is essential for smooth operation and fuel efficiency.
When you need professional engine and transmission repair in Waldorf, MD, Bill’s Foreign Auto delivers precision diagnostics and high-level service tailored to each vehicle. Whether you're driving a European luxury car, a Japanese commuter, or a domestic SUV, our technicians understand the unique systems and service intervals required for reliable powertrain performance.
Schedule a diagnostic appointment today and get ahead of potential engine and transmission issues before they turn into major repairs.