QUICK DIAGNOSTIC CHART [L8, LF]
id0103a0800600
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Troubleshooting item |
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1
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Melting of main or other fuses
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2
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MIL illuminates
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X
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X
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X
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X
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X
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X
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X
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3
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Will not crank
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4
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Hard to start/long crank/erratic start/erratic crank
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X
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5
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Engine stalls
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After start/at idle
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X
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X
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X
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X
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X
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6
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Cranks normally but will not start
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X
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X
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X
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X
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X
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7
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Slow return to idle
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X
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8
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Engine runs rough/rolling idle
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X
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X
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X
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X
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9
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Fast idle/runs on
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10
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Low idle/stalls during deceleration
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11
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Engine stalls/quits
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Acceleration/cruise
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X
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X
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X
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Engine runs rough
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Acceleration/cruise
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X
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X
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X
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Misses
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Acceleration/cruise
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X
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X
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X
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Buck/jerk
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Acceleration/cruise/ deceleration
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X
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X
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X
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|||||||||||||||||||||
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Hesitation/stumble
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Acceleration
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X
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X
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X
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Surges
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Acceleration/cruise
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X
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X
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X
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X
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12
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Lack/loss of power
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Acceleration/cruise
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X
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X
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X
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X
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13
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Knocking/pinging
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Acceleration/cruise
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X
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X
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X
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14
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Poor fuel economy
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X
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X
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X
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X
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X
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X
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15
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Emission compliance
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X
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X
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X
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X
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16
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High oil consumption/leakage
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X
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X
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X
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|||||||||||||||||||||
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17
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Cooling system concerns
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Overheating
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X
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X
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X
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X
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X
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18
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Cooling system concerns
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Runs cold
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X
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X
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|||||||||||||||||||||
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19
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Exhaust smoke
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X
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X
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X
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|||||||||||||||||||||
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20
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Fuel odor (in engine compartment)
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||||||||||||||||||||||||
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21
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Engine noise
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X
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X
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X
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|||||||||||||||||||||
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22
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Vibration concerns (engine)
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X
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X
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X
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|||||||||||||||||||||
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23
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A/C does not work sufficiently
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24
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A/C is always on or A/C compressor runs continuously
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25
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A/C is not cut off under wide open throttle conditions
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26
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Exhaust sulphur smell
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X
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|||||||||||||||||||||||
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27
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Spark plug condition
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X
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X
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||||||||||||||||||||||
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28
|
ATX concerns
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Upshift/downshift/engagement
|
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Troubleshooting item |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
1
|
Melting of main or other fuses
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|
|
|
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2
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MIL illuminates
|
X
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X
|
X
|
X
|
||||||||||||||||
|
3
|
Will not crank
|
||||||||||||||||||||
|
4
|
Hard to start/long crank/erratic start/erratic crank
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
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X
|
X
|
X
|
||||||||
|
5
|
Engine stalls
|
After start/at idle
|
X
|
X
|
X
|
X
|
X
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X
|
X
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X
|
X
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X
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X
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X
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X
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X
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X
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X
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|||
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6
|
Cranks normally but will not start
|
X
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X
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X
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X
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X
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X
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X
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X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
||||
|
7
|
Slow return to idle
|
X
|
X
|
||||||||||||||||||
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8
|
Engine runs rough/rolling idle
|
X
|
X
|
X
|
X
|
X
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X
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X
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X
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X
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X
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X
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X
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X
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X
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X
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|||||
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9
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Fast idle/runs on
|
X
|
X
|
X
|
|||||||||||||||||
|
10
|
Low idle/stalls during deceleration
|
X
|
X
|
X
|
|||||||||||||||||
|
11
|
Engine stalls/quits
|
Acceleration/cruise
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||
|
Engine runs rough
|
Acceleration/cruise
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
||||||
|
Misses
|
Acceleration/cruise
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
||||||
|
Buck/jerk
|
Acceleration/cruise/ deceleration
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
||||||
|
Hesitation/stumble
|
Acceleration
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||
|
Surges
|
Acceleration/cruise
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||
|
12
|
Lack/loss of power
|
Acceleration/cruise
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|||
|
13
|
Knocking/pinging
|
Acceleration/cruise
|
X
|
X
|
X
|
||||||||||||||||
|
14
|
Poor fuel economy
|
X
|
X
|
X
|
X
|
X
|
|||||||||||||||
|
15
|
Emission compliance
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||||||||
|
16
|
High oil consumption/leakage
|
||||||||||||||||||||
|
17
|
Cooling system concerns
|
Overheating
|
|||||||||||||||||||
|
18
|
Cooling system concerns
|
Runs cold
|
|||||||||||||||||||
|
19
|
Exhaust smoke
|
X
|
X
|
X
|
X
|
X
|
|||||||||||||||
|
20
|
Fuel odor (in engine compartment)
|
X
|
|||||||||||||||||||
|
21
|
Engine noise
|
X
|
X
|
||||||||||||||||||
|
22
|
Vibration concerns (engine)
|
||||||||||||||||||||
|
23
|
A/C does not work sufficiently
|
||||||||||||||||||||
|
24
|
A/C is always on or A/C compressor runs continuously
|
||||||||||||||||||||
|
25
|
A/C is not cut off under wide open throttle conditions
|
||||||||||||||||||||
|
26
|
Exhaust sulphur smell
|
X
|
X
|
X
|
X
|
||||||||||||||||
|
27
|
Spark plug condition
|
X
|
X
|
X
|
X
|
X
|
X
|
||||||||||||||
|
28
|
ATX concerns
|
Upshift/downshift/engagement
|
|||||||||||||||||||
|
Troubleshooting item |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
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![]() |
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![]() |
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||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
1
|
Melting of main or other fuses
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2
|
MIL illuminates
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||||||||||||||
|
3
|
Will not crank
|
X
|
X
|
|||||||||||||||||||||
|
4
|
Hard to start/long crank/erratic start/erratic crank
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
||||||||||||||||
|
5
|
Engine stalls
|
After start/at idle
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||||||||||
|
6
|
Cranks normally but will not start
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||||||||||
|
7
|
Slow return to idle
|
X
|
||||||||||||||||||||||
|
8
|
Engine runs rough/rolling idle
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
||||||||||||
|
9
|
Fast idle/runs on
|
X
|
||||||||||||||||||||||
|
10
|
Low idle/stalls during deceleration
|
X
|
X
|
X
|
X
|
X
|
||||||||||||||||||
|
11
|
Engine stalls/quits
|
Acceleration/cruise
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
||||||||
|
Engine runs rough
|
Acceleration/cruise
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||||||
|
Misses
|
Acceleration/cruise
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||||||
|
Buck/jerk
|
Acceleration/cruise/ deceleration
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||||||
|
Hesitation/stumble
|
Acceleration
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||||||
|
Surges
|
Acceleration/cruise
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||||||
|
12
|
Lack/loss of power
|
Acceleration/cruise
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
||||||||||||||
|
13
|
Knocking/pinging
|
Acceleration/cruise
|
X
|
|||||||||||||||||||||
|
14
|
Poor fuel economy
|
X
|
X
|
X
|
X
|
X
|
||||||||||||||||||
|
15
|
Emission compliance
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||||||||||
|
16
|
High oil consumption/leakage
|
X
|
||||||||||||||||||||||
|
17
|
Cooling system concerns
|
Overheating
|
||||||||||||||||||||||
|
18
|
Cooling system concerns
|
Runs cold
|
||||||||||||||||||||||
|
19
|
Exhaust smoke
|
X
|
X
|
|||||||||||||||||||||
|
20
|
Fuel odor (in engine compartment)
|
X
|
X
|
|||||||||||||||||||||
|
21
|
Engine noise
|
|||||||||||||||||||||||
|
22
|
Vibration concerns (engine)
|
|||||||||||||||||||||||
|
23
|
A/C does not work sufficiently
|
|||||||||||||||||||||||
|
24
|
A/C is always on or A/C compressor runs continuously
|
|||||||||||||||||||||||
|
25
|
A/C is not cut off under wide open throttle conditions
|
|||||||||||||||||||||||
|
26
|
Exhaust sulphur smell
|
X
|
X
|
|||||||||||||||||||||
|
27
|
Spark plug condition
|
X
|
X
|
X
|
X
|
|||||||||||||||||||
|
28
|
ATX concerns
|
Upshift/downshift/engagement
|
||||||||||||||||||||||
|
Troubleshooting item |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
1
|
Melting of main or other fuses
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2
|
MIL illuminates
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||||||||||||
|
3
|
Will not crank
|
X
|
||||||||||||||||||||||
|
4
|
Hard to start/long crank/erratic start/erratic crank
|
X
|
||||||||||||||||||||||
|
5
|
Engine stalls
|
After start/at idle
|
X
|
X
|
X
|
X
|
||||||||||||||||||
|
6
|
Cranks normally but will not start
|
X
|
||||||||||||||||||||||
|
7
|
Slow return to idle
|
X
|
||||||||||||||||||||||
|
8
|
Engine runs rough/rolling idle
|
X
|
X
|
X
|
X
|
X
|
||||||||||||||||||
|
9
|
Fast idle/runs on
|
X
|
||||||||||||||||||||||
|
10
|
Low idle/stalls during deceleration
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
||||||||||||||||
|
11
|
Engine stalls/quits
|
Acceleration/cruise
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||||||||||
|
Engine runs rough
|
Acceleration/cruise
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
||||||||||||||
|
Misses
|
Acceleration/cruise
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||||||||||||
|
Buck/jerk
|
Acceleration/cruise/ deceleration
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||||||||||||
|
Hesitation/stumble
|
Acceleration
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
||||||||||||||
|
Surges
|
Acceleration/cruise
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||||||||||||
|
12
|
Lack/loss of power
|
Acceleration/cruise
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||||||||||
|
13
|
Knocking/pinging
|
Acceleration/cruise
|
X
|
X
|
X
|
|||||||||||||||||||
|
14
|
Poor fuel economy
|
X
|
X
|
X
|
X
|
X
|
X
|
|||||||||||||||||
|
15
|
Emission compliance
|
X
|
||||||||||||||||||||||
|
16
|
High oil consumption/leakage
|
|||||||||||||||||||||||
|
17
|
Cooling system concerns
|
Overheating
|
X
|
X
|
||||||||||||||||||||
|
18
|
Cooling system concerns
|
Runs cold
|
||||||||||||||||||||||
|
19
|
Exhaust smoke
|
|||||||||||||||||||||||
|
20
|
Fuel odor (in engine compartment)
|
|||||||||||||||||||||||
|
21
|
Engine noise
|
X
|
||||||||||||||||||||||
|
22
|
Vibration concerns (engine)
|
X
|
X
|
X
|
X
|
|||||||||||||||||||
|
23
|
A/C does not work sufficiently
|
X
|
X
|
X
|
||||||||||||||||||||
|
24
|
A/C is always on or A/C compressor runs continuously
|
X
|
X
|
|||||||||||||||||||||
|
25
|
A/C is not cut off under wide open throttle conditions
|
X
|
||||||||||||||||||||||
|
26
|
Exhaust sulphur smell
|
|||||||||||||||||||||||
|
27
|
Spark plug condition
|
X
|
X
|
|||||||||||||||||||||
|
28
|
ATX concerns
|
Upshift/downshift/engagement
|
||||||||||||||||||||||
|
Troubleshooting item |
![]() |
||
|---|---|---|---|
|
1
|
Melting of main or other fuses
|
|
|
|
2
|
MIL illuminates
|
|
|
|
3
|
Will not crank
|
||
|
4
|
Hard to start/long crank/erratic start/erratic crank
|
||
|
5
|
Engine stalls
|
After start/at idle
|
|
|
6
|
Cranks normally but will not start
|
||
|
7
|
Slow return to idle
|
||
|
8
|
Engine runs rough/rolling idle
|
||
|
9
|
Fast idle/runs on
|
||
|
10
|
Low idle/stalls during deceleration
|
|
|
|
11
|
Engine stalls/quits
|
Acceleration/cruise
|
|
|
Engine runs rough
|
Acceleration/cruise
|
||
|
Misses
|
Acceleration/cruise
|
||
|
Buck/jerk
|
Acceleration/cruise/ deceleration
|
X
|
|
|
Hesitation/stumble
|
Acceleration
|
X
|
|
|
Surges
|
Acceleration/cruise
|
X
|
|
|
12
|
Lack/loss of power
|
Acceleration/cruise
|
X
|
|
13
|
Knocking/pinging
|
Acceleration/cruise
|
|
|
14
|
Poor fuel economy
|
||
|
15
|
Emission compliance
|
||
|
16
|
High oil consumption/leakage
|
||
|
17
|
Cooling system concerns
|
Overheating
|
|
|
18
|
Cooling system concerns
|
Runs cold
|
|
|
19
|
Exhaust smoke
|
||
|
20
|
Fuel odor (in engine compartment)
|
||
|
21
|
Engine noise
|
||
|
22
|
Vibration concerns (engine)
|
||
|
23
|
A/C does not work sufficiently
|
||
|
24
|
A/C is always on or A/C compressor runs continuously
|
||
|
25
|
A/C is not cut off under wide open throttle conditions
|
||
|
26
|
Exhaust sulphur smell
|
||
|
27
|
Spark plug condition
|
|
|
|
28
|
ATX concerns
|
Upshift/downshift/engagement
|
|