Thursday, June 23, 2011

Isuzu Trooper Limited 3.5L, Trouble code P0401

Basic Diagnostic procedures for, Isuzu Trooper Limited 3.5L, Trouble code P0401

Tests:
1. Command the Exhaust Gas Recirculation (EGR) valve open at idle and see that it kills the engine. If it doesn't, the EGR valve may be sticking or the EGR passages in the intake manifold may be plugged up.
2. Unbolt the throttle body to be able to access the EGR tube, use a coat hanger to clean out the tube.

Potential Causes:
Exhaust Gas Recirculation (EGR) Valve
Plugged Passages
Confirmed Fix:

Cleaned Exhaust Gas Recirculation (EGR) Passages

Tech Tips:
These engines also suffer from oil consumption. This adds to the problem of the Exhaust Gas Recirculation (EGR) system plugging up.

Isuzu Trooper Limited 3.5L, Trouble code P0401
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1 comment:

  1. air ride kitsJune 21, 2012 at 6:45 PM

    Isuzu first introduced the Trooper to the U.S. market in the early '80s, long before sport-utility vehicles became the hot sellers they are today.

    ReplyDelete

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