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Isuzu 20LE - Hesitation, Sag, Stumble Symptom (ContD)

Isuzu 20LE
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6E1-104 DRIVEABILITY AND EMISSIONS
Hesitation, Sag, Stumble Symptom (Cont'd)
Step Action Value(s) Yes No
11
Check for a loose ignition control module ground.
Was a problem found?
-
Verify repair Go to Step 12
12
Visually/Physically inspect the secondary ignition wires.
Check for the following conditions.
Verify that all ignition wire resistance are less than the
specified value.
Value that ignition wires are correctly routed to eliminate
cross-firing.
Verify that ignition wires are not arcing to ground.
Spraying the secondary ignition wires with a light mist of
water may help locate an intermittent problem.
Was a problem found?
#1 cyl. 4.7k
#2 cyl. 3.9k
#3 cyl. 3.4k
#4 cyl. 3.1k Verify repair Go to Step 14
13 Replace the TP sensor. - Verify repair -
14
1. Check the ignition coil secondary resistance.
2. Replace the coil if it is greater than the specified value.
Was a problem found? 2.5 k Verify repair Go to Step 15
15
1. Remove the spark plugs and check for gas or oil
fouling cracks, wear, improper gap, burned electrodes
of heavy deposits.
2. If spark plugs are fouled, the cause of fouling must be
determined before replacing the spark plugs.
Was a problem found?
-
Verify repair Go to Step 16
16
Check the ECM grounds to verify that they are clean and
tight. Refer to the ECM wiring diagrams in Electrical
Diagnosis.
Was a problem found?
-
Verify repair Go to Step 17
17
Visually/Physically check the vacuum hoses for splits,
kinks and proper connections and proper connections and
routing as shown on the "Emission Control System
Schematics".
Was a problem found?
-
Verify repair Go to Step 18
18
1. Review all the diagnostic procedures within this table.
2. If all procedures have been completed and no
malfunctions have been found, review/inspect the
following:
Visual/physical inspection.
Scan Tool data.
All electrical connections within a suspected circuit
and/or system.
3. If a problem is found, repair as necessary.
Was a problem found?
-
Verify repair
Contact
Technical
Assistance

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