Mazda CX-9 Grand Touring. Manual — part 325

cranking time before
starting.

[MZI-3.7].)

5 Engine stalls.

After start/at idle

The engine stops
unexpectedly at idle
and/or after start or
both.

(See NO.5 ENGINE
STALLS-AFTER START/AT
IDLE [MZI-3.7].)

6 Cranks normally but will not start

The starter cranks
engine at normal
speed but the engine
will not run.

(See NO.6 CRANKS
NORMALLY BUT WILL
NOT START [MZI-3.7].)

7 Slow return to idle

The engine takes more
time than normal to
return to idle speed.

(See NO.7 SLOW RETURN
TO IDLE [MZI-3.7].)

8 Engine runs rough/rolling idle.

The engine speed
fluctuates between the
specified idle speed
and lower speed and
the engine shakes
excessively.

(See NO.8 ENGINE RUNS
ROUGH/ROLLING IDLE
[MZI-3.7].)

9 Fast idle/runs on

The engine speed
continues at fast idle
after warm-up.
The engine runs after
the ignition switch is
turned off.

(See NO.9 FAST IDLE/RUNS
ON [MZI-3.7].)

10 Low idle/stalls during deceleration

The engine stops
unexpectedly at the
beginning of
deceleration or
recovery from
deceleration.

(See NO.10 LOW
IDLE/STALLS DURING
DECELERATION [MZI-
3.7].)

11

Engine
stalls/quits.

Acceleration/cruise

The engine stops
unexpectedly at the
beginning of
acceleration or during
acceleration.
The engine stops
unexpectedly while
cruising.

(See NO.11 ENGINE
STALLS/QUITS, ENGINE
RUNS ROUGH, MISSES,
BUCK/JERK,
HESITATION/STUMBLE,

Engine runs
rough.

Acceleration/cruise

The engine speed
fluctuates during
acceleration or
cruising.

Misses

Acceleration/cruise

The engine misses
during acceleration or
cruising.

2008 Mazda CX-9 Grand Touring

2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:10:04 AM

Page 6

© 2005 Mitchell Repair Information Company, LLC.

Buck/jerk

Acceleration/cruise/deceleration

The vehicle
bucks/jerks during
acceleration, cruising,
or deceleration.

SURGES [MZI-3.7].)

Hesitation/stumble Acceleration

A momentary pause at
the beginning of
acceleration or during
acceleration.

Surges

Acceleration/cruise

A momentary minor
irregularity in engine
output.

12

Lack/loss of
power

Acceleration/cruise

The performance is
poor under load (such
as power down when
climbing hills).

(See NO.12 LACK/LOSS OF
POWER-
ACCELERATION/CRUISE
[MZI-3.7].)

13 Knocking/pinging Acceleration/cruise

Sound is produced
when the air/fuel
mixture is ignited by
something other than
the spark plug (such
as hot spot in
combustion chamber).

(See NO.13
KNOCKING/PINGING-
ACCELERATION/CRUISE
[MZI-3.7].)

14 Poor fuel economy

The fuel economy is
unsatisfactory.

(See NO.14 POOR FUEL
ECONOMY [MZI-3.7].)

15 Emission compliance

Fails emissions test.

(See NO.15 EMISSION
COMPLIANCE [MZI-3.7].)

16 High oil consumption/leakage

The oil consumption
is excessive.

(See NO.16 HIGH OIL
CONSUMPTION/LEAKAGE
[MZI-3.7].)

17

Cooling system
concerns

Overheating

The engine runs at
higher than normal
temperature/overheats.

(See NO.17 COOLING
SYSTEM CONCERNS-
OVERHEATING [MZI-3.7].)

18

Cooling system
concerns

Runs cold

The engine does not
reach normal
operating temperature.

(See NO.18 COOLING
SYSTEM CONCERNS-
RUNS COLD [MZI-3.7].)

19 Exhaust smoke

Blue, black, or white
smoke from exhaust
system

(See NO.19 EXHAUST
SMOKE [MZI-3.7].)

20 Fuel odor (in engine compartment)

Gasoline fuel smell or
visible leakage

(See NO.20 FUEL ODOR (IN
ENGINE COMPARTMENT)
[MZI-3.7].)

21 Engine noise

Engine noise from
under hood

(See NO.21 ENGINE NOISE
[MZI-3.7].)

22 Vibration concerns (engine)

Vibration from under
hood or driveline

(See NO.22 VIBRATION
CONCERNS (ENGINE)

2008 Mazda CX-9 Grand Touring

2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:10:04 AM

Page 7

© 2005 Mitchell Repair Information Company, LLC.

QUICK DIAGNOSTIC CHART [MZI-3.7]

[MZI-3.7].)

23 A/C does not work sufficiently.

The A/C compressor
magnetic clutch does
not engage when A/C
is turned on.

(See NO.23 A/C DOES NOT
WORK SUFFICIENTLY
[MZI-3.7].)

24

A/C is always on or A/C compressor runs
continuously.

The A/C compressor
magnetic clutch does
not disengage.

(See NO.24 A/C IS ALWAYS
ON OR A/C COMPRESSOR
RUNS CONTINUOUSLY
[MZI-3.7].)

25

A/C does not cut off under wide open throttle
conditions.

The A/C compressor
magnetic clutch does
not disengage under
wide open throttle.

(See NO.25 A/C DOES NOT
CUT OFF UNDER WIDE
OPEN THROTTLE
CONDITIONS [MZI-3.7].)

26 Exhaust sulphur smell

Rotten egg smell
(sulphur) from
exhaust

(See NO.26 EXHAUST
SULPHUR SMELL [MZI-
3.7].)

27 Fuel refill concerns

The fuel tank does not
fill smoothly.

(See NO.27 FUEL REFILL
CONCERNS [MZI-3.7].)

28 Fuel filling shut off concerns

The fuel does not shut
off properly.

(See NO.28 FUEL FILLING
SHUT OFF CONCERNS
[MZI-3.7].)

29 Spark plug condition

An incorrect spark
plug condition.

(See NO.29 SPARK PLUG
CONDITION [MZI-3.7].)

30 AT concerns

Upshift/downshift engagement

AT concerns not
related to engine
performance.

(See SYMPTOM
TROUBLESHOOTING
ITEM TABLE [AW6A-EL,
AW6AX-EL] .)

2008 Mazda CX-9 Grand Touring

2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:10:04 AM

Page 8

© 2005 Mitchell Repair Information Company, LLC.

Fig. 5: Quick Diagnostic Chart (1 Of 4)
Courtesy of MAZDA MOTORS CORP.

2008 Mazda CX-9 Grand Touring

2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:10:04 AM

Page 9

© 2005 Mitchell Repair Information Company, LLC.