Diagnosis And Testing - Wind Noise - Dodge Sprinter 2006 Manual

23 - 2 BODY
a lign ed a n d sea led. If com pon en t a lign m en t or sea l-
in g is n ecessa r y, r efer t o t h e a ppr opr ia t e sect ion of
t h is gr ou p for pr oper pr ocedu r es.
WA TER LEAK TESTS
WARNING: DO NOT USE ELECTRIC SHOP LIGHTS
OR TOOLS IN WATER TEST AREA. PERSONAL
INJURY CAN RESULT.
Wh en t h e con dit ion s ca u sin g a wa t er lea k h a ve
been det er m in ed, sim u la t e t h e con dit ion s a s closely
a s possible.
• If a lea k occu r s wit h t h e veh icle pa r ked in a
st ea dy ligh t r a in , flood t h e lea k a r ea wit h a n open -
en ded ga r den h ose.
• If a lea k occu r s wh ile dr ivin g a t h igh wa y speeds
in a st ea dy r a in , t est t h e lea k a r ea wit h a r ea son a ble
velocit y st r ea m or fa n spr a y of wa t er. Dir ect t h e
spr a y in a dir ect ion com pa r a ble t o a ct u a l con dit ion s.
• If a lea k occu r s wh en t h e veh icle is pa r ked on a n
in clin e, h oist t h e en d or side of t h e veh icle t o sim u -
la t e t h is con dit ion . Th is m et h od ca n be u sed wh en
t h e lea k occu r s wh en t h e veh icle a cceler a t es, st ops or
t u r n s. If t h e lea k occu r s on a cceler a t ion , h oist t h e
fr on t of t h e veh icle. If t h e lea k occu r s wh en br a kin g,
h oist t h e ba ck of t h e veh icle. If t h e lea k occu r s on left
t u r n s, h oist t h e left side of t h e veh icle. If t h e lea k
occu r s on r igh t t u r n s, h oist t h e r igh t side of t h e veh i-
cle. F or h oist in g r ecom m en da t ion s (Refer t o LUBRI-
CATION & MAINTE NANCE /H OISTING
STANDARD P ROCE DURE ).
WA TER LEAK DETECTION
To det ect a wa t er lea k poin t -of-en t r y, do a wa t er
t est a n d wa t ch for wa t er t r a cks or dr oplet s for m in g
on t h e in side of t h e veh icle. If n ecessa r y, r em ove in t e-
r ior t r im cover s or pa n els t o ga in visu a l a ccess t o t h e
lea k a r ea . If t h e h ose ca n n ot be posit ion ed wit h ou t
bein g h eld, h a ve som eon e h elp do t h e wa t er t est .
Som e wa t er lea ks m u st be t est ed for a con sider a ble
len gt h of t im e t o becom e a ppa r en t . Wh en a lea k
a ppea r s, fin d t h e h igh est poin t of t h e wa t er t r a ck or
dr op. Th e h igh est poin t u su a lly will sh ow t h e poin t of
en t r y. Aft er lea k poin t h a s been fou n d, r epa ir t h e
lea k a n d wa t er t est t o ver ify t h a t t h e lea k h a s
st opped.
Loca t in g t h e en t r y poin t of wa t er t h a t is lea kin g
in t o a ca vit y bet ween pa n els ca n be difficu lt . Th e
t r a pped wa t er m a y spla sh or r u n fr om t h e ca vit y,
oft en a t a dist a n ce fr om t h e en t r y poin t . Most wa t er
lea ks of t h is t ype becom e a ppa r en t a ft er a cceler a t in g,
st oppin g, t u r n in g, or wh en on a n in clin e.
MIRROR INSPECTION METHOD
Wh en a lea k poin t a r ea is visu a lly obst r u ct ed, u se
a su it a ble m ir r or t o ga in visu a l a ccess. A m ir r or ca n
a lso be u sed t o deflect ligh t t o a lim it ed-a ccess a r ea
t o a ssist in loca t in g a lea k poin t .
BRIGHT LIGHT LEAK TEST METHOD
Som e wa t er lea ks in t h e lu gga ge com pa r t m en t ca n
be det ect ed wit h ou t wa t er t est in g. P osit ion t h e veh i-
cle in a br igh t ly lit a r ea . F r om in side t h e da r ken ed
lu gga ge com pa r t m en t in spect a r ou n d sea ls a n d body
sea m s. If n ecessa r y, h a ve a h elper dir ect a dr op ligh t
over t h e su spect ed lea k a r ea s a r ou n d t h e lu gga ge
com pa r t m en t . If ligh t is visible t h r ou gh a n or m a lly
sea led loca t ion , wa t er cou ld en t er t h r ou gh t h e open -
in g.
PRESSURIZED LEAK TEST METHOD
Wh en a wa t er lea k in t o t h e pa ssen ger com pa r t -
m en t ca n n ot be det ect ed by wa t er t est in g, pr essu r ize
t h e pa ssen ger com pa r t m en t a n d soa p t est ext er ior of
t h e veh icle. To pr essu r ize t h e pa ssen ger com pa r t -
m en t , close a ll door s a n d win dows, st a r t en gin e, a n d
set h ea t er con t r ol t o h igh blower in H E AT posit ion . If
en gin e ca n n ot be st a r t ed, con n ect a ch a r ger t o t h e
ba t t er y t o en su r e a dequ a t e volt a ge t o t h e blower.
Wit h in t er ior pr essu r ized, a pply dish det er gen t solu -
t ion t o su spect ed lea k a r ea on t h e ext er ior of t h e
veh icle. Apply det er gen t solu t ion wit h spr a y device or
soft br ist le br u sh . If soa p bu bbles occu r a t a body
sea m , join t , sea l or ga sket , t h e lea k en t r y poin t cou ld
be a t t h a t loca t ion .
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DIAGNOSIS AND TESTING - WIND NOISE

Win d n oise is t h e r esu lt of m ost a ir lea ks. Air lea ks
ca n be ca u sed by poor sea lin g, im pr oper body com po-
n en t a lign m en t , body sea m por osit y, or m issin g plu gs
in t h e en gin e com pa r t m en t or door h in ge pilla r a r ea s.
All body sea lin g poin t s sh ou ld be a ir t igh t in n or m a l
dr ivin g con dit ion s. Movin g sea lin g su r fa ces will n ot
a lwa ys sea l a ir t igh t u n der a ll con dit ion s. At t im es,
side gla ss or door sea ls will a llow win d n oise t o be
n ot iced in t h e pa ssen ger com pa r t m en t du r in g h igh
cr oss win ds. Over com pen sa t in g on door or gla ss
a dju st m en t s t o st op win d n oise t h a t occu r s u n der
sever e con dit ion s ca n ca u se pr em a t u r e sea l wea r a n d
excessive closin g or la t ch in g effor t . Aft er a r epa ir pr o-
cedu r e h a s been per for m ed, t est veh icle t o ver ify
n oise h a s st opped befor e r et u r n in g veh icle t o u se.
VISUAL INSPECTION BEFORE TESTS
Ver ify t h a t floor a n d body plu gs a r e in pla ce a n d
body com pon en t s a r e a lign ed a n d sea led. If com po-
n en t a lign m en t or sea lin g is n ecessa r y, r efer t o t h e
a ppr opr ia t e sect ion of t h is gr ou p for pr oper pr oce-
du r es.
ROAD TESTING WIND NOISE
(1) Dr ive t h e veh icle t o ver ify t h e gen er a l loca t ion
of t h e win d n oise.
VA