NVH Diagnostic and Repair Services

introduction

Our company offers specialized Noise, Vibration, and Harshness (NVH) diagnostic and repair services using the Ford Rotunda MTS 4000/4100 NVH Analyzer. This advanced tool allows us to precisely identify, isolate, and resolve NVH issues, ensuring enhanced vehicle comfort, performance, and customer satisfaction. Below is an overview of the tests and services we provide.

Diagnostic Tests and Capabilities

The MTS 4000/4100 NVH Analyzer supports four primary operating modes, each designed to address specific NVH concerns with accuracy and efficiency:

NVH Diagnostic Services

Mode

Test Description

Services Provided

Applications

Vibration Diagnosis

Measures and analyzes vehicle vibrations using one or two accelerometers, correlating data with vehicle parameters (e.g., engine RPM, vehicle speed) from the Powertrain Control Module (PCM).

Pinpoint the source of vibrations (e.g., engine, driveline, or wheel-related issues) through detailed frequency analysis.
Identify component-specific vibrations with amplitude readings (e.g., vibrations below 0.06 Gs are typically imperceptible and may not require action).
Present results in multiple formats (Principle Component, Bar Chart, Frequency Spectrum, Waterfall) for clear visualization and accurate diagnosis.

Diagnose shakes, rattles, or thumps affecting ride quality.

Noise Diagnosis

Captures and analyzes noise data using one or two microphones, measuring sound intensity in decibels (dB) up to 1,000 Hz.

Identify sources of unwanted noises, such as hums, buzzes, or squeaks, by correlating noise frequencies with vehicle components.
Cross-reference noise and vibration data to diagnose complex NVH issues where symptoms may overlap.

Address cabin noise issues impacting passenger comfort.

Driveshaft Balancing

Utilizes a photo-tachometer to measure driveshaft rotation speed and identify imbalance-related vibrations.

Diagnose and correct driveshaft imbalances, a common cause of speed-dependent vibrations.
Perform precise balancing procedures to eliminate vibrations, following protocols outlined in Ford Technical Service Bulletins (TSBs).

Resolve vibrations noticeable at specific speeds, enhancing driveline performance.

Strobe Mode

Uses a strobe light or timing light to visually inspect rotating components by "freezing" their motion.

Visually diagnose issues like runout, bent components, or imbalances in driveshafts, pulleys, or fan blades.
Complement driveshaft balancing by providing visual confirmation of component behavior during operation.

Verify repairs and inspect rotating components for defects.

Service Benefits

Advanced NVH Diagnostic Tool - Key Benefits

Accurate Fault Isolation

By integrating sensor data with PCM information and user-defined vehicle parameters (e.g., tire size, axle ratio), I can precisely identify the root cause of NVH issues, reducing diagnostic time and avoiding unnecessary repairs.

Pre- and Post-Repair Verification

I record and compare test results before and after repairs, providing empirical evidence of issue resolution to ensure quality and build customer confidence.

Enhanced Efficiency

Objective, data-driven diagnostics minimize reliance on subjective road tests, streamlining the repair process and improving first-time fix rates.

Comprehensive NVH Solutions

From subtle noises to significant vibrations, I address a wide range of NVH complaints, improving vehicle comfort and longevity.

Why Choose Our Services?

Professional-grade NVH diagnostics

The MTS 4000/4100 offers professional-grade NVH diagnostics that go beyond traditional methods.

Precise, actionable solutions

The service delivers precise, actionable solutions to address customer complaints about noise, vibrations, or driveline issues.

Data-driven approach and objective verification

For complex NVH concerns, the data-driven approach guarantees thorough diagnostics and effective repairs, backed by objective verification.