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 that 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
Draft/wind noise and water leak around door perimeter	Loose fit seal	PINCH seal carrier to improve retention on seal flange.
	Seal installed incorrectly	REINSTALL the seal.
	Door misaligned	REALIGN the door. CHECK door gaps and fit in door opening and adjust as necessary. REFER to BODY CLOSURES .
	Scuff plate installed incorrectly	REINSTALL the scuff plate.
	Seal or seal pushpins damaged	INSTALL a new seal/pushpins.
	Sheet metal joints in door or door opening	SEAL leaks with silicone gasket and sealant.
Draft/wind noise and water leak around glass run	Door glass misaligned	ADJUST door glass.
	Glass run installed incorrectly	REINSTALL glass run. INSERT foam in glass run carrier if necessary.
	Leak path behind glass run	INSTALL foam rope behind glass run.
	Glass run channel spread wide	PINCH glass run channel to reduce size of opening.
	Glass run damaged	INSTALL a new glass run.
Draft/wind noise and water leak at inner belt line	Belt line seal installed incorrectly on flange	ADJUST seal. (Do not bend the flange.)
	No contact with side glass	ADJUST door glass.
	No contact with glass runs at both ends of belt line seal	ADJUST belt line seal or ADD foam at seal ends.
	Belt line seal damaged	INSTALL a new seal.
Draft/wind noise and water leak at outer belt line	Belt line seal installed incorrectly on flange (no glass contact)	ADJUST seal.
	Belt line seal does not contact the glass	ADJUST door glass.
	No contact with glass runs at both ends of belt line seal	ADJUST belt line seal or ADD foam at seal ends.
	Belt line seal damaged	INSTALL a new seal.
Draft/wind noise at inner door handle/speaker opening	Hole in weathershield	SEAL hole with suitable tape.
	Weathershield misaligned	REALIGN weathershield. INSTALL a new weathershield if pressure sensitive adhesive fails.
	Exterior door handle seal misaligned/damaged	REALIGN or INSTALL a new seal as necessary. REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .
	Speaker or speaker seal missing or damaged	REPAIR speaker seal or INSTALL a new door speaker.
Draft/wind noise and water leaks at floor pan and grommets	Missing or damaged plugs/grommets	CHECK plugs/grommets for correct installation or damage. INSTALL new plugs/grommets if necessary.
Road noise	Missing mastic insulators	CHECK for missing mastic insulators. REFER to BODY REPAIRS .
Road noise	Missing body insulators	CHECK for missing body insulators.
Rattles in body/doors and instrument panel	Loose wires/cables	CHECK that all wires/cables are correctly routed and inserted in correct retainers.
	Loose objects/components in door wells, pillars quarter trim panels	CHECK doors by carefully striking underside of doors with a rubber mallet while listening for rattles in doors and pillars. REMOVE or TIGHTEN loose objects/components.
	Buzz from instrument panel components	IDENTIFY which components of the instrument panel are buzzing. SECURE/FASTEN components as necessary, ADD foam or felt as needed if rattle persists.
Door drain holes collecting water	Holes clogged with mud or road tar	CLEAN drain holes of foreign material with a punch or screwdriver. CHECK drain holes regularly.
Wind noise from exterior rear view mirror	Exterior mirror housing misaligned	REALIGN with edges shingled to airflow, with no gaps.
	Mirror sail gasket folded/misaligned	REINSTALL with gasket unfolded and aligned correctly.
	Mirror housing trim cap installed incorrectly	REINSTALL with edges shingled to airflow.
	Air leak through mirror housing hinge	Fully ENGAGE mirror into its operating position. USE foam to block air path through hinge.
	Inner sail trim installed incorrectly	REINSTALL sail trim. ADJUST door trim.
	Inner sail trim installed incorrectly	REINSTALL sail trim. ADJUST door trim.
	Inner sail gasket/barrier installed incorrectly	REINSTALL trim cover with gasket/barrier aligned correctly.
	Air path through wiring bundle/fastener access holes	BLOCK air path(s) with foam/tape.
	Exposed fastener access hole on mirror housing/sail	INSTALL a new cap if missing.
Rattle/vibration from exterior rear view mirror	Mirror glass adjustment screws loose	REMOVE mirror glass and TIGHTEN mirror glass adjustment motor screws. REFER to REAR VIEW MIRRORS .
	Mirror mounting nuts loose	TIGHTEN mirror mounting nuts. REFER to REAR VIEW MIRRORS .
	Aftermarket air deflector/stone shields	If possible, REMOVE aftermarket air deflector/stone shield, then ROAD TEST vehicle. If concern is no longer present, ADVISE customer that aftermarket component was causing concern.
Draft/wind noise and water leak around perimeter of all fixed glass	Gaps in the sealant bead	APPLY approved sealant.
	Air traveling up windshield molding along A-pillar	INSTALL foam rope full length of the A-pillar.
	Gaps in sealant bead of windshield/rear/roof glass	RESEAL windshield/rear glass. REFER to GLASS, FRAMES AND MECHANISMS .
	Windshield/rear/roof glass misaligned or not installed correctly	REINSTALL windshield/rear glass. REFER to GLASS, FRAMES AND MECHANISMS .
	Rear hood seal at base of windshield misaligned/damaged	REALIGN or INSTALL a new seal as necessary.
	Gaps in sealant bead of roof appliques	REPLACE the roof applique. REFER to EXTERIOR TRIM AND ORNAMENTATION .
	Roof appliques misaligned or not installed correctly	REPLACE the roof applique. REFER to EXTERIOR TRIM AND ORNAMENTATION .
Draft noise at cowl	Cowl seal misaligned/damaged	REALIGN or INSTALL a new seal as necessary.
Wind noise created by airflow over or behind body panels	Fender splash shield misaligned	REALIGN fender splash shield.
	Body panel misaligned (exposed edge)	REALIGN appropriate body panel.
	Hood misaligned (front margin)	CHECK hood gaps and fit. ADJUST hood as necessary.
	Front grille edge noise	APPLY foam in hollow areas behind louvers.
Wind noise created by grille opening panel	Grille relationship to leaking edge on hood	If possible, ADJUST grille opening panel forward to eliminate wind noise.
Wind noise created by grille opening panel	Sharp edges due to material imperfections	REMOVE sharp edges (no damage to visible surface).
Wind noise from air extractor (body vent)	Air extractor housing seated incorrectly	REINSTALL air extractor housing.
Wind noise from air extractor (body vent)	Air extractor housing or flaps damaged	INSTALL a new air extractor.
Air leak at top of A-pillar - vehicles with a convertible top	Seal at windshield heater installed incorrectly	REINSTALL seal.
	Seal pinched	FILL seal with foam to reshape it.
	Gap between side rail and header seal at A-pillar	ADJUST J-hook/vinyl top.
Air leak at rear quarter glass (division bar) - vehicles with a convertible top	No contact/torn seal between front side glass and quarter glass division bar	CHECK the rear quarter glass division bar seal for a torn seal. If the seal is torn, INSTALL a new rear quarter window glass. REFER to GLASS, FRAMES AND MECHANISMS . If there is no contact, ADJUST the rear quarter glass and front door glass. REFER to GLASS, FRAMES AND MECHANISMS .
Air leak or wind noise from top of side glass - vehicles with a convertible top	Gap between side rail and vinyl top	ADD additional foam tape to seal between side rail and vinyl top.
	Seal at windshield header installed incorrectly	REINSTALL a seal.
	Seal damaged between side rail and vinyl top	INSTALL a new seal.
	Vinyl top damaged	INSPECT vinyl top. INSTALL a new vinyl top as necessary. REFER to CONVERTIBLE TOP .
Air leak or wind noise at windshield header - vehicles with a convertible top	Vinyl top not flush with header	ADJUST J-hook to lower the top to achieve a flush condition.
	Seal at windshield header installed incorrectly Header seal not flush with header	REINSTALL seal.
Convertible top flapping with the top up	Vinyl top contacting interior headliner	Working from front to back, INSTALL a 6.35 mm (0.25 in) foam sheet between headliner and vinyl top at suspected area. Allow a clearance of 50 mm (2 in) 75 mm (3 in) away from roof bows and side rails.
Wind noise from bug shield/exterior windshield sun visor	Turbulence created by location and shape	DETERMINE if an OEM part or aftermarket. If aftermarket ADVISE customer accordingly. If OEM, VERIFY correctly installed. If noise is abnormal repair or INSTALL a new as required.
Water behind the front side kick panels/on the front floor	Leafscreen/cowl grommets missing/not seated	INSPECT for correct installation of leafscreen/cowl grommets.
	Loose A-pillar window weather stripping retainer	INSPECT for correct installation of A-pillar weather stripping retainer.
	Misaligned body harness grommet from the passenger door	INSPECT for correct installation of body harness grommet.
	Glass roof vehicles only: leak under the glass roof front applique	REPLACE glass roof front applique. REFER to EXTERIOR TRIM AND ORNAMENTATION .
Water in the trunk	Glass roof only: glass roof leaking rear applique	REPLACE glass roof rear applique. REFER to EXTERIOR TRIM AND ORNAMENTATION .
Water in the trunk	Rear window glass is not sealed correctly	RESEAL the rear window glass. REFER to GLASS, FRAMES AND MECHANISMS .
Water sloshing sound when going around turns	Leafscreen/cowl panel not sealed against windshield/warped	INSPECT for correct cowl panel installation.
	Leafscreen/cowl grommets loose/missing/not seated	INSPECT for correct installation of leafscreen/cowl grommets.
	Incorrectly applied sealer on cowl panel to bulkhead pinch weld	Apply Motorcraft® Seam Sealer to pinch weld as required.