Cavalier L4-2.2L VIN F (2004)
Fuel Pump Pickup Filter: All Technical Service Bulletins
Fuel System - No Start/Low Power/Hesitation
Bulletin No.: 05-06-04-026A
Date: April 27, 2005
TECHNICAL
Subject:
Vehicle Hesitates, No Start, Lack of Power, Low Fuel Pressure (Test Fuel Pressure and Replace Fuel Pump Module Strainer)
Models:
2002-2003 Chevrolet Malibu
2002-2005 Chevrolet Cavalier
2004-2005 Chevrolet Classic
2002-2004 Oldsmobile Alero
2002-2005 Pontiac Grand Am, Sunfire
Supercede:
This bulletin is being revised to add a additional step to retest the fuel pressure after the strainer is replaced. Please discard Corporate Bulletin Number
05-06-04-026 (Section 06 - Engine).
Condition
Some customers may comment that the vehicle hesitates, does not start, and/or has lack of power.
Cause
The vehicle may have low fuel pressure caused by a restricted fuel pump strainer.
The current fuel pump has a 100 micron strainer.
Correction
Follow the service procedure below to test fuel pressure and replace the fuel strainer with a 200 micron strainer.
Caution:
^
Gasoline or gasoline vapors are highly flammable. A fire could occur if an ignition source is present. Never drain or store gasoline or diesel
fuel in an open container, due to the possibility of fire or explosion. Have a dry chemical (Class B) fire extinguisher nearby.
^
Wrap a shop towel around the fuel pressure connection in order to reduce the risk of fire and personal injury. The towel will absorb any
fuel leakage that occurs during the connection of the fuel pressure gage. Place the towel in an approved container when the connection of
the fuel pressure gage is complete.
Note:
Clean the fuel system service cap and surrounding area to avoid possible contamination in the system.
Important:
Verify that adequate fuel is in the fuel tank before proceeding with this diagnostic.
1.
Turn OFF the ignition.
2.
Turn OFF all accessories.
3.
Install fuel pressure gauge, J 34730-1A, or equivalent.
Important:
^
The fuel pump relay may need to be commanded ON a few times in order to obtain the highest possible fuel pressure.
^
DO NOT start the engine.
4.
Command the fuel pump relay ON with a scan tool.
