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Models: 1994-1997 BR Ram Truck with 8.0L V10 engine.
Hissing/Suction Noise Coming From Air Injection Pump Filter Inlet
Start the engine and allow the engine to fully warm up. While the engine is idling, listen for a hissing noise coming from the inlet air tube of the air injection pump filter. If the noise is heard, pinch off the air inlet tube of the the air injection pump filter. If the noise disappears while the tube is pinched, perform the repair procedure. I the noise is still heard with the tube pinched, further diagnosis is necessary, refer to the 1997 service manual pages 25-22 through 25-25 for additional information regarding the air injection system.
1 53031546 Tube, Inlet Air, Air injection Pump Filter
This repair involves removing the inlet air tube of the air injection pump and replacing it with a new part.
1. Remove inlet air tube that is attached to the air injection pump's filter and discard tube.
2. Install the new air tube for the secondary air injection pump filter onto the air injection pump.
Policy: Reimbursable within the provisions of the warranty
Thanks to Bob Bergevin and Barry Drodge for supplying this TSB information
This page was edited on: May 3, 2004