QUICK DIAGNOSTIC CHART [WL-C, WE-C]
id0103b6804700
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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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Engine check lamp illuminates
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3
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Will not crank
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×
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×
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×
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×
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×
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×
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4
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Hard start/long crank/erratic start/erratic crank
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×
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×
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×
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×
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5
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Engine stalls
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After start/at idle
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×
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×
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6
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Cranks normally but will not start
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×
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×
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7
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Slow return to idle
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8
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Engine runs rough/rolling idle
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×
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×
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9
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Fast idle/runs on
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×
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10
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Low idle/stalls during deceleration
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×
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×
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11
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Engine stalls/quits
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Acceleration/cruise
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×
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×
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Engine runs rough
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Acceleration/cruise
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×
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×
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Misses
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Acceleration/cruise
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×
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×
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Buck/jerk
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Acceleration/cruise/deceleration
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×
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×
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Hesitation/stumble
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Acceleration
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×
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×
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Surges
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Acceleration/cruise
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×
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×
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12
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Lack/loss of power
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Acceleration/cruise
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×
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×
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13
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Knocking/pinging
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×
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×
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14
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Poor fuel economy
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×
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×
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15
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Emissions compliance
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×
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×
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×
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16
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High oil consumption/leakage
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×
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×
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×
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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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×
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×
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18
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Cooling system concerns
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Runs cold
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19
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Excessive black smoke
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×
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×
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×
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20
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Fuel odor (in engine compartment)
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21
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Engine noise
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×
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×
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×
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×
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22
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Vibration concerns (engine)
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×
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×
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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 always on or A/C compressor runs continuously
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25
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A/C does not cut off under wide open throttle conditions
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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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||
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2
|
Engine check lamp illuminates
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3
|
Will not crank
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||
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4
|
Hard start/long crank/erratic start/erratic crank
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|
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|
×
|
×
|
×
|
×
|
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||
|
5
|
Engine stalls
|
After start/at idle
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|
|
×
|
×
|
×
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|
6
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Cranks normally but will not start
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|
×
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×
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||
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7
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Slow return to idle
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×
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||
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8
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Engine runs rough/rolling idle
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×
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×
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×
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×
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||
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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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×
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×
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||
|
11
|
Engine stalls/quits
|
Acceleration/cruise
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
|
|
|
Engine runs rough
|
Acceleration/cruise
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
|
||
|
Misses
|
Acceleration/cruise
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
|
||
|
Buck/jerk
|
Acceleration/cruise/deceleration
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
|
||
|
Hesitation/stumble
|
Acceleration
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
|
||
|
Surges
|
Acceleration/cruise
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
|
||
|
12
|
Lack/loss of power
|
Acceleration/cruise
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
13
|
Knocking/pinging
|
|
|
×
|
|
|
|
×
|
|
×
|
×
|
|
||
|
14
|
Poor fuel economy
|
|
|
×
|
|
|
|
×
|
|
×
|
×
|
×
|
||
|
15
|
Emissions compliance
|
|
|
×
|
|
|
|
×
|
×
|
×
|
×
|
×
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||
|
16
|
High oil consumption/leakage
|
|
|
|
|
|
|
|
|
|
|
|
||
|
17
|
Cooling system concerns
|
Overheating
|
×
|
×
|
×
|
×
|
|
|
|
|
|
|
|
|
|
18
|
Cooling system concerns
|
Runs cold
|
|
|
×
|
×
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|
|
|
|
|
|
|
|
|
19
|
Excessive black smoke
|
|
|
|
|
|
|
×
|
|
×
|
×
|
×
|
||
|
20
|
Fuel odor (in engine compartment)
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|
|
|
|
|
|
|
|
|
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||
|
21
|
Engine noise
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|
|
|
|
|
|
×
|
|
×
|
×
|
×
|
||
|
22
|
Vibration concerns (engine)
|
|
|
|
|
×
|
×
|
×
|
|
×
|
×
|
×
|
||
|
23
|
A/C does not work sufficiently
|
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||
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24
|
A/C always on or A/C compressor runs continuously
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||
|
25
|
A/C does not cut off under wide open throttle conditions
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|
|
|
|
|
|
|
|
|
|
||
|
Troubleshooting item |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
|||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
1
|
Melting of main or other fuses
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
2
|
Engine check lamp illuminates
|
|
|
×
|
×
|
|
|
×
|
|
|
|
|
|
||
|
3
|
Will not crank
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
4
|
Hard 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
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||
|
10
|
Low idle/stalls during deceleration
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|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
||
|
11
|
Engine stalls/quits
|
Acceleration/cruise
|
×
|
|
|
|
×
|
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
Engine runs rough
|
Acceleration/cruise
|
×
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
||
|
Misses
|
Acceleration/cruise
|
×
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
||
|
Buck/jerk
|
Acceleration/cruise/deceleration
|
×
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
||
|
Hesitation/stumble
|
Acceleration
|
×
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
||
|
Surges
|
Acceleration/cruise
|
×
|
|
|
×
|
×
|
|
×
|
×
|
×
|
×
|
×
|
×
|
||
|
12
|
Lack/loss of power
|
Acceleration/cruise
|
×
|
×
|
×
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
13
|
Knocking/pinging
|
×
|
×
|
×
|
×
|
×
|
|
×
|
×
|
×
|
|
|
×
|
||
|
14
|
Poor fuel economy
|
×
|
×
|
×
|
|
×
|
×
|
×
|
×
|
×
|
×
|
|
×
|
||
|
15
|
Emissions compliance
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
||
|
16
|
High oil consumption/leakage
|
×
|
|
|
|
|
|
|
|
|
|
|
|
||
|
17
|
Cooling system concerns
|
Overheating
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
18
|
Cooling system concerns
|
Runs cold
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
19
|
Excessive black smoke
|
×
|
×
|
×
|
|
×
|
|
×
|
×
|
×
|
×
|
×
|
×
|
||
|
20
|
Fuel odor (in engine compartment)
|
|
|
|
|
|
|
|
|
|
|
×
|
|
||
|
21
|
Engine noise
|
|
|
|
|
×
|
|
×
|
×
|
×
|
|
|
|
||
|
22
|
Vibration concerns (engine)
|
|
|
|
×
|
×
|
|
|
|
|
×
|
|
×
|
||
|
23
|
A/C does not work sufficiently
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
24
|
A/C always on or A/C compressor runs continuously
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
25
|
A/C does not cut off under wide open throttle conditions
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
Troubleshooting item |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
1
|
Melting of main or other fuses
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
2
|
Engine check lamp illuminates
|
×
|
|
|
|
×
|
|
|
|
|
|
|
|||
|
3
|
Will not crank
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
4
|
Hard 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
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
×
|
|
×
|
|||
|
Hesitation/stumble
|
Acceleration
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
×
|
|
×
|
|||
|
Surges
|
Acceleration/cruise
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
×
|
|
×
|
|||
|
12
|
Lack/loss of power
|
Acceleration/cruise
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
×
|
|
×
|
||
|
13
|
Knocking/pinging
|
×
|
|
|
|
×
|
×
|
×
|
|
×
|
|
|
|||
|
14
|
Poor fuel economy
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
×
|
|
|
|||
|
15
|
Emissions compliance
|
×
|
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|||
|
16
|
High oil consumption/leakage
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
17
|
Cooling system concerns
|
Overheating
|
|
|
|
|
|
|
|
|
|
|
|
||
|
18
|
Cooling system concerns
|
Runs cold
|
|
|
|
|
|
|
|
|
|
|
|
||
|
19
|
Excessive black smoke
|
×
|
|
|
|
|
|
×
|
|
×
|
|
|
|||
|
20
|
Fuel odor (in engine compartment)
|
|
×
|
|
|
|
|
|
|
|
|
|
|||
|
21
|
Engine noise
|
×
|
|
|
|
×
|
×
|
|
|
×
|
|
|
|||
|
22
|
Vibration concerns (engine)
|
×
|
|
|
|
×
|
×
|
|
|
×
|
|
|
|||
|
23
|
A/C does not work sufficiently
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
24
|
A/C always on or A/C compressor runs continuously
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
25
|
A/C does not cut off under wide open throttle conditions
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
Troubleshooting item |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
1
|
Melting of main or other fuses
|
|
|
|
|
|
|
|
|
|
|
|
|
2
|
Engine check lamp illuminates
|
|
×
|
×
|
×
|
×
|
×
|
×
|
|
×
|
|
|
|
3
|
Will not crank
|
|
|
|
|
|
|
|
|
|
||
|
4
|
Hard 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
|
|
×
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
Hesitation/stumble
|
Acceleration
|
|
×
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
Surges
|
Acceleration/cruise
|
|
×
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
12
|
Lack/loss of power
|
Acceleration/cruise
|
|
×
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
13
|
Knocking/pinging
|
|
×
|
|
×
|
×
|
×
|
×
|
|
×
|
|
|
|
14
|
Poor fuel economy
|
|
×
|
|
×
|
×
|
×
|
×
|
|
×
|
×
|
|
|
15
|
Emissions compliance
|
|
×
|
|
×
|
×
|
×
|
×
|
|
×
|
|
|
|
16
|
High oil consumption/leakage
|
|
|
|
|
|
|
|
|
|
|
|
|
17
|
Cooling system concerns
|
Overheating
|
|
|
|
|
|
|
|
|
|
×
|
|
18
|
Cooling system concerns
|
Runs cold
|
|
|
|
|
|
|
|
|
|
|
|
19
|
Excessive black smoke
|
|
|
|
|
×
|
×
|
|
|
×
|
|
|
|
20
|
Fuel odor (in engine compartment)
|
|
|
|
|
|
|
|
|
×
|
|
|
|
21
|
Engine noise
|
|
×
|
|
×
|
×
|
×
|
×
|
|
×
|
|
|
|
22
|
Vibration concerns (engine)
|
|
×
|
|
×
|
|
|
×
|
×
|
×
|
|
|
|
23
|
A/C does not work sufficiently
|
|
|
|
|
|
|
|
|
|
×
|
|
|
24
|
A/C always on or A/C compressor runs continuously
|
|
|
|
|
|
|
|
|
|
|
|
|
25
|
A/C does not cut off under wide open throttle conditions
|
|
|
|
|
|
|
×
|
×
|
|
|
|
|
Troubleshooting item |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
1
|
Melting of main or other fuses
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2
|
Engine check lamp illuminates
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3
|
Will not crank
|
|
|
|
|
|
|
|
|
|
|
×
|
||
|
4
|
Hard 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
|
×
|
×
|
|
×
|
|
×
|
|
|
|
|
|
|
|
|
Hesitation/stumble
|
Acceleration
|
×
|
×
|
|
×
|
|
×
|
|
|
|
|
|
|
|
|
Surges
|
Acceleration/cruise
|
×
|
×
|
|
×
|
|
×
|
|
|
|
|
|
|
|
|
12
|
Lack/loss of power
|
Acceleration/cruise
|
×
|
×
|
|
×
|
|
|
×
|
|
|
|
|
|
|
13
|
Knocking/pinging
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
14
|
Poor fuel economy
|
×
|
×
|
|
×
|
|
×
|
×
|
|
|
|
|
|
|
|
15
|
Emissions compliance
|
|
|
|
|
|
×
|
|
|
|
|
|
|
|
|
16
|
High oil consumption/leakage
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
17
|
Cooling system concerns
|
Overheating
|
×
|
×
|
×
|
|
|
|
|
|
|
|
|
|
|
18
|
Cooling system concerns
|
Runs cold
|
|
|
×
|
|
|
|
|
|
|
|
|
|
|
19
|
Excessive black smoke
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
20
|
Fuel odor (in engine compartment)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
21
|
Engine noise
|
|
|
|
|
×
|
|
|
×
|
|
|
|
|
|
|
22
|
Vibration concerns (engine)
|
|
|
|
|
|
|
|
×
|
×
|
×
|
×
|
|
|
|
23
|
A/C does not work sufficiently
|
×
|
×
|
|
|
|
|
|
|
|
|
|
|
|
|
24
|
A/C always on or A/C compressor runs continuously
|
×
|
×
|
|
|
|
|
|
|
|
|
|
|
|
|
25
|
A/C does not cut off under wide open throttle conditions
|
×
|
×
|
|
|
|
|
|
|
|
|
|
|
|