Symptom Chart - NVH
WARNING: This page is about a different car, the 2013 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
NVH symptoms should be identified using the diagnostic tools that are available. For a list of these tools, an explanation of their uses and a glossary of common terms, refer to
NOISE, VIBRATION & HARSHNESS
. Since it is possible any one of multiple systems may be the cause of a symptom, it may be necessary to use a process of elimination type of diagnostic approach to pinpoint the responsible system. If this is not the causal system for the symptom, refer back to
NOISE, VIBRATION & HARSHNESS
for the next likely system and continue diagnosis. SYMPTOM CHART - NVH
| Condition |
Possible Sources |
Action |
- Vibration when the brakes are applied
|
- Brake disc(s)
- Suspension components
|
|
- Brake vibration/shudder - occurs when the brake pedal is released
|
|
|
|
|
- Caliper guide pins or guide pin bolts
|
|
- Missing or damaged anti-rattle clips or springs
|
- CHECK the brake pads for missing clips or broken springs. INSTALL new components as necessary. REFER to
FRONT DISC BRAKE
for front disc brakes or
REAR DISC BRAKE
for rear disc brakes.
|
|
|
|
- Squealing noise - occurs on first (morning) brake application
|
|
- Acceptable condition. Caused by humidity and low brake pad temperature.
|
- Squealing noise - a continuous squeal
|
|
|
- Squealing noise - an intermittent squeal
|
|
- Acceptable condition. Caused by cold, heat, water, mud or snow.
|
- Groaning noise - occurs at low speeds with brake lightly applied (creeping)
|
|
|
- Grinding/moaning noise - continuous
|
|
- INSPECT the brake pads, brake discs and attaching hardware for damage. VERIFY brake components are within specifications. REFER to BRAKE SYSTEM INSPECTION .
|