Applied vehicles:
2004-’06 Maxima (A34)
2004-’07 Quest (V42)
2003-’06 Murano (Z50)
[2007 Quest built before:
5N1BV(*)8U(*)7N136219; 2006 Murano built before: JN8AZ08T(*)6W 402002 (2WD) or
JN8AZ08W(*)6W 505916 (AWD)]
If you confirm there is an exhaust
rattle/buzzing noise that sounds like it’s coming from the front exhaust tube,
follow the procedures below.
Actions:
1. Inspect both of the catalyst
front tube support brackets for breaks, cracks or missing bolts.
2. If you’ve determined that the
support brackets need to be replaced:
Note: For Quest, first refer to
the Repair Flow Chart (see Fig. 1).
– Replace both support brackets
and bolts with new parts (see Parts Information below). It’s not necessary to
replace the front tube assembly.
– For Maxima with 5 speed A/T
only: install the exhaust tube mounting brackets (see Parts Information).
– For repairs, refer to the
Service Procedure below.
Important: The purpose of
“Actions” (above) is to give you a quick idea of the work you will be
performing. You must follow the entire Repair Flow Chart and Service Procedure
(as it applies to your customer’s vehicle) since it contains information that
is essential to successfully completing the repair.
1. Inspect both the front and rear
support brackets on the catalyst front tube (see Fig. 2).
– Brackets are located between the
exhaust flange of Bank 1 catalyst and the transmission housing.
– Check for breaks or cracks, and
loose or missing bolts.
Note:
– Breaks or cracks may be found
anywhere on the bracket body or at the mounting bolt holes.
– Cracks appear in a “hairline”
form.
2. If either (or both) of the
front and rear support brackets are broken/cracked, or have loose or missing
bolts, replace both brackets and all of their bolts as follows:
a. Remove and discard the original
bolts and brackets.
Note: For Quest with 5-speed A/T
only, STOP HERE. No further action is needed. Do not install new brackets and
bolts after brackets and bolts are removed.
b. Loosely install the new front
and rear support brackets and bolts.
– Front and rear support brackets
and bolts are listed in the Parts Information below.
c. Position both the front and
rear support brackets so that each bolt is centered in the bolt holes.
d. Hand-tighten each bolt to hold
it in the centered position.
e. Torque each bolt to 19.0-25.0
Nm (14-18.4 ft.-lb.), starting with the transmission side bolt.
3. For Maxima with 5-speed A/T
only, install the exhaust tube mounting brackets (upper and lower) and flange
nuts listed in the Parts Information section. See Figs. 3 and 4.
– Torque each nut: 30.4-39.2 Nm
(22.4-28.9 ft.-lb.)
4. Make sure the rattle/buzzing
noise is gone.
– Conduct a short test-drive
involving several low- speed part throttle accelerations.
– It’s best to listen for unusual
exhaust noise while driving with the windows down and driving next to an object
such as a wall, hedge or parked cars. Any unusual noises, if they exist, will
reflect back to the car and are more noticeable.
NISSAN Parts Information
Description Model/Trans P/N
Gusset/Bracket – Rear Maxima 20817-7Y010
Quest – 4AT (only) 20817-7Y010
Murano 20817-CA010
Gusset/Bracket – Front 4AT/ 6MT / CVT 20817-CA110
Maxima – 5AT 20817-7Y110
Upper Exhaust Tube Maxima – 5AT 20711-ZK30A
Mounting Bracket
Lower Exhaust Tube Maxima – 5AT 20711-CA020
Mounting Bracket
Flange Nut (2) Maxima – 5AT 08918-3401A
Hex Bolt (4) All (except Quest 5AT) 14069-CA010
Courtesy of ALLDATA.