NVH – Car Vibration Diagnosis

Your car shakes at 60 mph. You've paid for tire balancing, maybe new tires, maybe a driveshaft, and it still vibrates. The shop says, "They all do that." It doesn't have to be that way.

Take one road test, and NVH tells you whether your vibration is tire-, driveshaft-, or engine-speed-related. Then it walks you step by step to the part causing it.

Designed by John Kelly, an automotive technology professor at Weber State University with 32 years of experience in vibration diagnostics, and his son Jacob.

WHAT YOU GET

• Almost 50,000 vehicles from 36 manufacturers. Pick your vehicle and go.

• Nearly 300 vibration sources with step-by-step diagnostic and repair procedures

• Hundreds of photos and dozens of training videos built in

• Automatic identification of the vibration type on your vehicle

• One-time purchase of $99.99. No subscription.

HOW IT WORKS

1. Pick your vehicle, or enter your own and save it for next time.

2. Mount your phone or tablet against a solid surface in the vehicle.

3. Follow the road test instructions and record.

4. NVH shows you the vibration type, with totals broken down by vehicle speed.

5. Follow the built-in diagnostic help to find and fix the source.

You can be set up and ready to start in as little as 30 seconds.

CARS, TRUCKS AND COMMERCIAL TRUCKS

• Passenger cars, light-duty trucks and SUVs

• Classic cars and trucks, street rods and custom builds (enter your own vehicle information)

• Parallel hybrids (P0-P4)

• Class 4-8 medium- and heavy-duty commercial trucks, with commercial truck transmissions in the database

ANALYSIS AND SHARING

• Live results on three different displays while you drive

• Record your road test, then replay it in real time or step through it

• Totals for each vibration type, broken down by vehicle speed

• Save, print, or email a PDF diagnostic report

• Export a recording as an NVH file and email it to another NVH user, on Android or iPhone, to view your road test and analysis

EXTRA TOOLS

• Measure driveshaft and U-joint working angles. Some devices do not have the gyroscope this needs.

• Check speedometer accuracy

OPTIONAL BLUETOOTH ADAPTERS

Engine-speed vibrations can use engine RPM read straight from the vehicle:

• OBDLink MX+ or OBDLink LX for passenger cars and light trucks

• Nexiq Blue-Link 2 or Blue-Link Mini for Class 4-8 trucks

Most diagnoses need no extra hardware. Vehicles with a CVT, plus hybrids and medium- and heavy-duty trucks, need an adapter to diagnose engine-speed vibrations. Tire-speed and driveshaft-speed vibrations never need one.

WHO IT'S FOR

• Shops and technicians: vibration jobs mean long road tests, guesswork, and comebacks. NVH names the vibration type in one road test and costs less than one comeback.

• Car owners: run the test yourself and hand your mechanic a PDF report of what is vibrating and at what speed.

• Schools and instructors: NVH is used to teach vibration diagnosis in the classroom. Students learn every vibration type and the theory behind it on real vehicles, and share recordings so the class can review a road test together. Ask support@vibratesoftware.com about classroom use.

ELECTRIC VEHICLES

This Android app does not support electric vehicle diagnosis. EV diagnosis (303 models, including 55 Teslas) is available in the NVH app for iPhone and iPad.

GOOD TO KNOW

• Your phone or tablet needs a GPS sensor and an accelerometer.

• NVH identifies the type of vibration (tire, driveshaft, or engine speed). To find the exact source, follow the app's diagnostic steps.

• NVH measures vibration you can feel. It is not a tool for diagnosing sounds.

• Use NVH from a passenger seat, not as the driver. You assume all responsibility and risk when using this application.

Questions or a vehicle we are missing? support@vibratesoftware.com or https://vibratesoftware.com. Watch John's vibration diagnosis videos on YouTube: vibratesoftware.