Navistar INTERNATIONAL DT 466 User Manual

6 PERFORMANCE DIAGNOSTICS 231
8. Exhaust Restriction
Figure 301
Purpose
To check for restrictions in the exhaust system likely
to cause engine performance problems
NOTE: High intake or exhaust restriction can cause a
large amount of black smoke.
Tools
• EST with MasterDiagnostics® software
• EZ-Tech® interface cable
WARNING: To avoid serious personal injury,
possible death or damage to the engine or
vehicle, read all safety instructi on s in the “Safety
Information” section of this manual.
Monitorin g EBP using EST
NOTE: If an EST is not available, use alternate
method – “Monitoring EBP using Pressure Sensor.”
1. See “DT 466 Performance Specifications” –
Appendix A (page 595) or “DT 570 and HT 570
Performance Specifications” – Appendix B (page
619) for specifications and record on Diagnostic
Form.
2. Inspect the exhau s t system for damage and
restriction.
3. Disconnect the EGR control valve. If EGR control
valve is plugged in during the test, results will be
incorrect.
NOTE: When the EGR control valve is
disconnected, the ECM will set DTC 163 (Position
signal out of range low ) and possibly DTC 365
(Position above/below desired level) for the EGR
control valve. Ignore and clear DTC 163 and DTC
365, after the test is complete.
Figure 302 KOER Air Management.ssn
4. Open D_KOER _AirManag ement.ssn to
monitor
EBP at high idle, no load.
WARNING: To avoid serious personal injury,
possible death or damage to the engine or vehicle
– comply with the following:
When running the engine in the service bay, make
sure the parking brake is set, the transmission is
in neutral, and the wheels are blo cked.
5. Run e ngine at high idle, no load.
NOTE: Do not run KOER Air Management test.
The session is open to monitor EBP at high idle
and to clear DTC after it is set.
6. Record results on Diagnostic F orm.
• If restriction is to specification, do the
following:
a. Turn ignition switch to OFF.
b. Reconnect EGR control valve.
c. Turn ignition sw itch to ON.
d. Clear all DTCs.
e. Continue Performance Diagnostics.
EGES-270-1
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
©August 2008 Navistar, Inc.

Navistar INTERNATIONAL DT 466 Specifications

General

Brand	Navistar
Model	INTERNATIONAL DT 466
Category	Engine
Language	English