Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1999WINDSTAR BASE, VAN CARGO, 3.8 4REPAIR AND DIAGNOSIS (SINGLE PAGE)EXTERNAL PAGESDIFFERENT CARSECTION 927 (NOISE, VIBRATION & HARSHNESS)
1999 Ford Windstar Base, Van Cargo, 3.8 4
Section 927 (Noise, Vibration & Harshness)
1999 Ford Windstar Base, Van Cargo, 3.8 4SECTION Section 927 (Noise, Vibration & Harshness)
WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
- Description And Operation
- Noise, Vibration and Harshness (NVH)
- Notes
- Acceptable Noise, Vibration and Harshness
- Diagnostic Theory
- Glossary of Terms
- Acceleration - Light
- Acceleration - Medium
- Acceleration - Heavy
- Ambient Temperature
- Amplitude
- Backlash
- Boom
- Bound Up
- Brakes Applied
- Buffet/Buffeting
- Buzz
- Camber
- Caster
- Chatter
- Chirp
- Chuckle
- Click
- Clonk
- Clunk/Driveline Clunk
- Coast/Deceleration
- Coast/Neutral Coast
- Constant Velocity (CV) Joint
- Controlled Rear Suspension Height
- Coupling Shaft
- Cps
- Cracks
- Creak
- Cruise
- Cycle
- Decibel
- Drive Engine Run-Up (DERU) Test
- Driveline Angles
- Driveshaft
- Drivetrain
- Drivetrain Damper
- Drone
- Drumming
- Dynamic Balance
- Engine Imbalance
- Engine Misfire
- Engine Shake
- Flexible Coupling
- Float
- Flutter
- Frequency
- Gravelly Feel
- Grind
- Hiss
- Hoot
- Howl
- Hum
- Hz
- Imbalance
- Inboard
- Intensity
- Isolate
- Knock
- Moan
- Neutral Engine Run-Up (NERU) Test
- Neutralize/Normalize
- Outboard
- Ping
- Pinion Shaft
- Pitch
- Pumping Feel
- Radial/Lateral
- Rattle
- Ring Gear
- Road Test
- Roughness
- Runout
- Rustling
- Shake
- Shimmy
- Shudder
- Slap
- Slip Yoke/Slip Spline
- Squeak
- Squeal
- Static Balance
- Tap
- Thump
- Tick
- Tip-In Moan
- TIR
- Tire Deflection
- Tire Flat Spots
- Tire Force Vibration
- Transient
- Two-Plane Balance
- Vibration
- Whine
- Whistle
- Wind Noise
- Wot
- Tools and Techniques
- Noise, Vibration and Harshness (NVH)
- Diagnosis And Testing
- Noise, Vibration and Harshness (NVH)
- Notes
- Customer Interview
- Pre-Drive Check
- Preparing for the Road Test
- Verify the Customer Concern
- Road Test
- Slow Acceleration Test
- Heavy Acceleration Test
- Neutral Coast Down Speed Test
- Downshift Speed Test
- Steering Input Test
- Brake Test
- Road Test Over Bumps
- Neutral Engine Run-Up (NERU) Test
- Drive Engine Run-Up (DERU) Load Test
- Engine Accessory Test
- Vehicle Cold Soak Procedure
- Check TSBs/Repair History
- Diagnostic Procedure
- NVH Condition and Symptom Categories
- Symptom Charts
- Symptom Chart - Air Leak And Wind Noise
- Symptom Chart-Driveline Noise/Vibration
- Symptom Chart - Engine Noise/Vibration
- Symptom Chart - Idle Noise/Vibration
- Symptom Chart - Squeak And Rattle
- Symptom Chart - Steering Noise/Vibration
- Symptom Chart - Suspension Noise/Vibration
- Symptom Chart- Tire Noise/Vibration
- Symptom Chart- Manual Transmission And Transfer Case Noise/Vibration
- Symptom Chart- Automatic Transmission Noise/Vibration
- Symptom Chart - Electronically Controlled Continuously Variable Transmission (eCVT) Noise/Vibration
- Pinpoint Tests
- Notes
- Pinpoint Test A: Engine Ticking Noise
- Pinpoint Test B: Accessory Drive Bearing Hoot
- Pinpoint Test C: Power Steering Moan
- Pinpoint Test D: Drumming Noise
- Pinpoint Test E: Engine Ticking, Knocking Or Continuous Rattle
- Pinpoint Test F: Front Suspension Noise
- Pinpoint Test G: Rear Suspension Noise
- Pinpoint Test H: Wheel And Tire
- Pinpoint Test I: High Speed Shake Or Shimmy Diagnosis
- Pinpoint Test J: Clutch Vibration
- Pinpoint Test K: Transfer Case Vibration
- Component Tests
- Noise, Vibration and Harshness (NVH)
- General Procedures
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.