|
Technical
- Water in AIR Pump and/or DTC P0410, P0412, P0415, P0416, P0100, P0101,
P0102 or DTC 48 (AIR System Disable Procedure) #01-06-04-011
Water in
AIR Pump and/or DTC P0410, P0412, P0415, P0416, P0100, P0101, P0102 or DTC
48 (AIR System Disable Procedure)
 | 1995-1996 Buick
Roadmaster
| | 1995-1996 Cadillac
Fleetwood
| 1995-1996 Chevrolet
Caprice, Impala SS
| with 4.3L or 5.7L
Engine (VINs W, P -- RPOs L99, LT1) |
| |
Condition
| Some customers may
comment of a hesitation during heavy/full throttle acceleration.
| A 1996 vehicle may
also set any of the following DTCs:
 | n P0410
| n P0412
| n P1415
| n P1416
| n P0100
| n P0101
| n P0102 |
| | | | | |
|
|
| A 1995 vehicle may
set a DTC 48.
| There will also be
evidence of water in the AIR pump. |
|
| Cause
Under
high engine speed and load conditions, hot exhaust gasses may leak
past the air check valves. As the exhaust gasses in the air tube cool,
water vapors collect into the AIR pump. As the vehicle is driven,
condensation from the AIR pump may come into contact with the Mass
Airflow Sensor through the AIR inlet hose. This condition may cause a
hesitation on acceleration and may also set the DTCs.
|
Correction
To
correct this condition, a Secondary AIR Injection Pump disable procedure
has been developed. (It has been determined that the Secondary AIR
Injection system is not required to meet emission requirements for these
vehicles only.)
Locate
the relay center (1) and air cleaner box (2).
| Remove
the AIR hose and clamp (1) from the air cleaner box.
| Insert
the plug (2) into the air cleaner box AIR hose inlet (3).
| Install
the AIR hose and clamp (1) to the air cleaner box.
| Remove
the cover (1) from the relay center (3).
| Remove
AIR pump relay (2) from the relay center (3).
| Install
the relay cover (1).
| Install
new emission label to radiator support (3).
| Update
vehicle calibration. (1995 4.3 L L99 Caprice, and 1996 vehicles) |
| | | | | | |
|
|
|
|
Part
Number
|
Description
|
Qty
|
|
12569122
|
AIR
Inlet Hose Plug
|
1
|
|
12569123
|
New
Emission Label
|
1
|
|
|
Parts
are currently available from GMSPO.
Calibration
Information
The
Calibrations are electronic calibrations and are NOT available
from GMSPO. Calibrations will be available from Techline starting
February 2001, on the TIS 2000 version TIS 2.0/2001 data update or
later.
Warranty
Information
For
vehicles repaired under warranty, use:
|
 |
|
|
|
Labor
Operation
|
Description
|
Labor
Time
|
|
J6930
|
AIR
Disable Procedure
|
0.2
hr.
|
|
This
is a unique labor operation number for use only with this
bulletin. This number will not be published in the Labor
Time Guide.
|
|
|
|
|
1995
4.3 L (RPO L99) Caprice and 1996 vehicles should also use this add
time for reprogramming:
|
|
|
|
|
Labor
Operation
|
Description
|
Labor
Time
|
|
J6355
|
Powertrain
Controller -- Reprogram -- On Car
|
Use
Published Labor Times
|
|
|
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