Table of Contents
Advertisement
X J
GENERAL INFORMA TION
CATALYTIC CONVERTER . . . . . . . . . . . . . . . . . . . 1
EXHAUST SYSTEM . . . . . . . . . . . . . . . . . . . . . . . 1
DIAGNOSIS AND TESTING
EXHAUST SYSTEM . . . . . . . . . . . . . . . . . . . . . . . 2
REMOVAL AND INSTALLA TION
CATALYTIC CONVERTER . . . . . . . . . . . . . . . . . . . 3
GEN ERAL I N FORM AT I ON
EXHAUST SYSTEM
Th e ba sic exh a u st syst em con sist s of a n en gin e
exh a u st m a n ifold, exh a u st pipe wit h oxygen sen sor,
ca t a lyt ic con ver t er wit h oxygen sen sor, m u ffler a n d
exh a u st t a ilpipe (F ig. 1).
Fig. 1 Exhaust System—2.5L/4.0L
Th e exh a u st syst em u ses a sin gle m u ffler wit h a ca t -
a lyt ic con ver t er con sist in g of du a l cer a m ic m on olit h s.
EXHAUST SYSTEM
CON T EN T S
page
EXHAUST PIPE . . . . . . . . . . . . . . . . . . . . . . . . . . 2
MUFFLER AND EXHAUST TAILPIPE . . . . . . . . . . 4
SPECIFICA TIONS
TORQUE SPECIFICATIONS . . . . . . . . . . . . . . . . . 5
Th e 4.0L en gin es u se a sea l bet ween t h e en gin e
exh a u st m a n ifold a n d exh a u st pipe t o a ssu r e a t igh t
sea l a n d st r a in fr ee con n ect ion s.
Th e exh a u st syst em m u st be pr oper ly a lign ed t o
pr even t st r ess, lea ka ge a n d body con t a ct . If t h e sys-
t em con t a ct s a n y body pa n el, it m a y a m plify objec-
t ion a ble n oises or igin a t in g fr om t h e en gin e or body.
Wh en in spect in g a n exh a u st syst em , cr it ica lly
in spect for cr a cked or loose join t s, st r ipped scr ew or
bolt t h r ea ds, cor r osion da m a ge a n d wor n , cr a cked or
br oken h a n ger s. Repla ce a ll com pon en t s t h a t a r e
ba dly cor r oded or da m a ged. DO NOT a t t em pt t o
r epa ir.
Wh en r epla cem en t is r equ ir ed, u se or igin a l equ ip-
m en t pa r t s (or t h eir equ iva len t ). Th is will a ssu r e
pr oper a lign m en t a n d pr ovide a ccept a ble exh a u st
n oise levels.
CAUTION: Avoid application of rust prevention
compounds or undercoating materials to exhaust
system floor pan exhaust heat shields. Light over
spray near the edges is permitted. Application of
coating will result in excessive floor pan tempera-
tures and objectionable fumes.
CA TAL YTIC CONVERTER
Th e st a in less st eel ca t a lyt ic con ver t er body is
design ed t o la st t h e life of t h e veh icle. E xcessive h ea t
ca n r esu lt in bu lgin g or ot h er dist or t ion , bu t exces-
sive h ea t will n ot be t h e fa u lt of t h e con ver t er. If
u n bu r n ed fu el en t er s t h e con ver t er, over h ea t in g m a y
occu r. If a con ver t er is h ea t -da m a ged, cor r ect t h e
ca u se of t h e da m a ge a t t h e sa m e t im e t h e con ver t er
is r epla ced. Also, in spect a ll ot h er com pon en t s of t h e
exh a u st syst em for h ea t da m a ge.
Un lea ded ga solin e m u st be u sed t o a void con t a m i-
n a t in g t h e ca t a lyst cor e.
EXHAUST SYSTEM
11 - 1
page
Advertisement
Chapters
Table of Contents
