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2008 - MX-5 - Engine

SYMPTOM DIAGNOSTIC INDEX [LF]

Diagnostic Index

No.

TROUBLESHOOTING ITEM

DESCRIPTION

PAGE

1

Melting of main or other fuses

(See NO.1 MELTING OF MAIN OR OTHER FUSES [LF].)

2

MIL illuminates

The MIL is illuminated incorrectly.

(See NO.2 MIL ILLUMINATES [LF].)

3

Will not crank

The starter does not work.

(See NO.3 WILL NOT CRANK [LF].)

4

Hard to start/long crank/erratic start/erratic crank

The starter cranks the engine at normal speed but the engine requires excessive cranking time before starting.

(See NO.4 HARD TO START/LONG CRANK/ERRATIC START/ERRATIC CRANK [LF].)

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 [LF].)

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 [LF].)

7

Slow return to idle

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

(See NO.7 SLOW RETURN TO IDLE [LF].)

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 [LF].)

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 [LF].)

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 [LF].)

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, SURGES [LF].)

Engine runs rough.

Acceleration/cruise

The engine speed fluctuates during acceleration or cruising.

Misses

Acceleration/cruise

The engine misses during acceleration or cruising.

Buck/jerk

Acceleration/cruise/ deceleration

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

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 [LF].)

13

Knocking/pinging/detonation

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 [LF].)

14

Poor fuel economy

The fuel economy is unsatisfactory.

(See NO.14 POOR FUEL ECONOMY [LF].)

15

Emission compliance

Fails emissions test.

(See NO.15 EMISSION COMPLIANCE [LF].)

16

High oil consumption/leakage

The oil consumption is excessive.

(See NO.16 HIGH OIL CONSUMPTION/LEAKAGE [LF].)

17

Cooling system concerns

Overheating

The engine runs at higher than normal temperature/overheats.

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

18

Cooling system concerns

Runs cold

The engine does not reach normal operating temperature.

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

19

Exhaust smoke

Blue, black, or white smoke from exhaust system

(See NO.19 EXHAUST SMOKE [LF].)

20

Fuel odor (in engine compartment)

Gasoline fuel smell or visible leakage

(See NO.20 FUEL ODOR (IN ENGINE COMPARTMENT) [LF].)

21

Engine noise

Engine noise from under hood

(See NO.21 ENGINE NOISE [LF].)

22

Vibration concerns (engine)

Vibration from under hood or driveline

(See NO.22 VIBRATION CONCERNS (ENGINE) [LF].)

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 [LF].)

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/A/C COMPRESSOR RUNS CONTINUOUSLY [LF].)

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 [LF].)

26

Exhaust sulphur smell

Rotten egg smell (sulphur) from exhaust

(See NO.26 EXHAUST SULPHUR SMELL [LF].)

27

Fuel refill concerns

The fuel tank does not fill smoothly.

(See NO.27 FUEL REFILL CONCERNS [LF].)

28

Fuel filling shut off issues

The fuel does not shut off properly.

(See NO.28 FUEL FILLING SHUT OFF CONCERNS [LF].)

29

Spark plug condition

An incorrect spark plug condition.

(See NO.29 SPARK PLUG CONDITION [LF].)

30

AT concerns

Upshift/downshift engagement

AT concerns not related to engine performance.

(See SYMPTOM TROUBLESHOOTING ITEM TABLE [SJ6A-EL].)




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