Hissing/Suction Noise From Air Injection Pump Filter
NO: 25-01-97GROUP: Emissions
DATE: Apr. 18, 1997
SUBJECT:
Hissing/Suction Noise Coming From Air Injection Pump Filter Inlet
MODELS:
1994 - 1997 (BR) Ram Truck
NOTE:
THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH THE 8.0L V-10 ENGINE.
SYMPTOM/CONDITION:
Hissing/Suction noise coming from the inlet air tube of the air injection pump filter.
DIAGNOSIS:
Start the engine and allow the engine to fully warm up. While the engine is idling, listen for a hissing/suction noise coming from the inlet air tube of the air injection pump filter. If an hissing/suction noise is heard, pinch off the air inlet tube of the air injection pump filter. If the noise disappeared when the tube was pinched off, perform the Repair Procedure. If the noise is still heard, further diagnosis is required. Refer to the 1997 Ram Truck Service Manual (Publication No. 81-370-7108), pages 25-22 through 25-25 for additional information regarding the air injection system.
PARTS REQUIRED:
1 53031546 Tube, Inlet Air, Air Injection Pump Filter
REPAIR PROCEDURE:
This bulletin involves replacing the inlet air tube of the air injection pump with a revised part.
1. Remove the inlet air tube that is attached to the air injection pump's filter and discard tube.
2. Install the new inlet tube (p/n 53031546) for the secondary air injection pump filter onto the air injection pump filter.
POLICY: Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No: 25-01-07-90 0.2 Hrs.
FAILURE CODE: P8 - New Part