i-350 L5-3.5L (2006)
Air Filter Element: Customer Interest
Fuel System - Over Oiled Aftermarket Air Filter Concerns
2007 Service Bulletins
Information IB07-05-S002
ISSUE DATE: FEBRUARY 2007
Automatic Transmission Shift, Engine Driveability Concerns or Malfunction Indicator Lamp (MIL) Light On as a Result of the Installation of an
Aftermarket Reusable, Excessively Oiled Air Filter (This Bulletin Supersedes IB04-05-S004)
Affected Vehicles
2005-2007 Isuzu Ascender
2007 Isuzu i-290/i-370 (TI)
2006 Isuzu i-280/i-350 (TI)
Service Information
This bulletin is being revised to add models and model years.
IMPORTANT:
First, Inspect the vehicle for a reusable aftermarket excessively over oiled air filter. DO NOT repair MAF sensors under warranty if concerns result
from the use of an excessively over oiled aftermarket, reusable air filter.
The use of an excessively over oiled aftermarket, reusable air filter may result in:
^
Malfunction Indicator Lamp (MIL) Light On.
^
Transmission shift concerns, slipping and damaged clutch(es) or band(s).
^
Engine drivability concerns, poor acceleration from a stop, limited engine RPM range.
The oil that is used on these air filter elements may be transferred onto the Mass Air Flow (MAF) sensor causing contamination of the sensor. As a
result, the Grams per Second (GPS) signal from the MAF may be low and any or all of the concerns listed above may occur.
When servicing a vehicle with any of these concerns, be sure to check for the presence of an aftermarket reusable, excessively over oiled air filter. The
MAF, GPS reading should be compared to a like vehicle with an OEM air box and filter under the same driving conditions to verify the concern.
If an aftermarket reusable air filter is used, technicians should inspect the MAF sensor element and the air induction hose for contamination of oil prior
to making warranty repairs.
NOTE:
The use of an aftermarket reusable air filter DOES NOT void the vehicle's warranty. However, transmission or engine drivability concerns (related to
the MAF sensor being contaminated with oil) that are the result of the use of an aftermarket reusable, excessively over oiled air filter are not
considered to be warrantable repair items.
Disclaimer
