EasyManuals Logo

Isuzu 20LE User Manual

Isuzu 20LE
510 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #270 background imageLoading...
Page #270 background image
6E1-100 DRIVEABILITY AND EMISSIONS
Cuts Out, Misses Symptom
Step Action Value(s) Yes No
DEFINITION: Steady pulsation or jerking that follows engine speed; usually more pronounced as engine load
increases.
1
Was the On-Board Diagnostic (OBD) System Check
performed? -
Go to Step 2
Go to OBD
System
Check
2
1. Perform a bulletin search.
2. If a bulletin that addresses the symptom is found,
correct the condition as instructed in the bulletin.
Was a bulletin found that addresses the symptom?
-
Verify Repair Go to Step 3
3
Was a visual/physical check performed?
-
Go to Step 4
Go to Visual/
Physical
Check
4
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 5
5
Monitor "02 Status" on the Scan Tool.
Is the "02 Status" in the rich condition (If applicable) ? Go to Step 6 Go to Step 7
6
Check items that can cause the engine to run rich.
Refer to "Diagnostic Aids" in Diagnostic Trouble Code 45
(If applicable).
Was a problem found?
-
Verify repair Go to Step 9
7 Is the "02 Status" significantly in the lean condition (If
applicable)?
- Go to Step 8 Go to Step 9
8
Check items that can cause the engine to run lean.
Refer to Diagnostic Aids in Diagnostic Trouble Code 44 (If
applicable).
Was a problem found?
-
Verify repair Go to Step 9
9
1. Check for incorrect idle speed. Ensure that the
following conditions are present:
Engine fully warm.
Accessories are OFF.
2. Using a Scan Tool, monitor the IAC position.
Is the IAC position within the specified values?
Between
5 and 50
counts Go to Step 11 Go to Step 10

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Isuzu 20LE and is the answer not in the manual?

Isuzu 20LE Specifications

General IconGeneral
BrandIsuzu
Model20LE
CategoryEngine
LanguageEnglish

Related product manuals