Fulltext TSBs

Technical Service Bulletins

TSB
96-7-27
  • ENGINE NOISE – “KNOCKING” SOUND – 5.8L – SECONDARY AIR INJECTION (AIR) PUMP
  • NOISE – “KNOCKING” SOUND – 5.8L – SECONDARY AIR INJECTION (AIR) PUMP
Publication Date: MARCH 25, 1996

LIGHT TRUCK:
1995-1996 BRONCO, ECONOLINE, F-150-350 SERIES

ISSUE:

A “knocking” noise may occur when engine is cold and under acceleration. The noise could be coming from the Secondary Air Injection (AIR) Pump.

ACTION:

Verify the knock noise is coming from the AIR Pump and install the correct AIR Pump Service Kit for the application. Refer to the following diagnosis and service procedures for details.

DIAGNOSIS

Test drive the vehicle cold. The knock noise is most noticeable while the engine is under load at approximately 1500 rpm. The concern may be verified on automatic transmission-equipped vehicles by first setting the parking brake, and with the wheels chocked, starting the engine and placing the vehicle in gear. Verify the knock noise is coming from the AIR Pump by using a technician’s stethoscope while the engine speed is approximately 1500 rpm.

SERVICE PROCEDURE

NOTE:THE NEW AIR PUMP IS ORIENTED IN A POSITION 180 DEGREES OPPOSITE TO THE PRODUCTION AIR PUMP.

Install the specified AIR Pump Service Kit for each application using the following charts:



1995 50-STATE E-150/250 AND CALIFORNIA E-350
Qty.Part NumberDescriptionKit NumberI.S. Number
1F6UE-9A486-AAAir PumpF5PZ-9A486-HB6832
1F5TE-9S476-JAHose – Air Pump-To-Outlet Tube
1F5UE-9S449-HAHose – Air Cleaner-To-Air Pump
1F2TE-9H447-AAClamp – Hose-To-Tube


1995-96 49-STATE E-350
Qty.Part NumberDescriptionKit NumberI.S. Number
1F6TE-9A486-GAAir PumpF5PZ-9A486-JB6833
1F5TE-9S476-HAHose – Air Pump-To-Outlet Tube
1F5UE-9S449-HAHose – Air Cleaner-To-Air Pump
1F2TE-9H447-AAClamp – Hose-To-Tube


1995-96 49-STATE F-SERIES OVER 8500 LBS GVWR
Qty.Part NumberDescriptionKit NumberI.S. Number
1F6TE-9A486-GAAir PumpF5PZ-9A486-KB6835
1F5TE-9S476-HAHose – Air Pump-To-Outlet Tube
1F5TE-9S449-CAHose – Air Cleaner-To-Air Pump
1F2TE-9H447-AAClamp – Hose-To-Tube


1995 F-SERIES UNDER 8500 LBS GVWR, BRONCO, AND CALIFORNIA F-SERIES
Qty.Part NumberDescriptionKit NumberI.S. Number
1F6TE-9A486-FAAir PumpF5PZ-9A486-LB6834
1F5TE-9S476-JAHose – Air Pump-To-Outlet Tube
1F5TE-9S449-CAHose – Air Cleaner-To-Air Pump
1F2TE-9H447-AAClamp – Hose-To-Tube



PART NUMBERPART NAME
F5PZ-9A486-HBSecondary Air Injection (AIR) Pump Kit (1995 50-State E-150/250 And California E-350)
F5PZ-9A486-JBSecondary Air Injection (AIR) Pump Kit (1995-96 49-State E-350)
F5PZ-9A486-KBSecondary Air Injection (AIR) Pump Kit (1995-96 49-State F-Series Over 8500 Lbs GVWR)
F5PZ-9A486-LBSecondary Air Injection (AIR) Pump Kit (1995 F-Series Under 8500 Lbs GVWR, Bronco, And California F-Series)

OTHER APPLICABLE ARTICLES:

NONE

WARRANTY STATUS:

Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage

OPERATIONDESCRIPTIONTIME
960727AReplace Air Pump And Hoses – Econoline0.8 Hr.
960727BReplace Air Pump And Hoses – F-Series, Bronco0.7 Hr.

DEALER CODING

BASIC PART NO.CONDITION CODE
9A48656

OASIS CODES:

702000


Copyright 1996 Ford Motor Company