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TSB 18-06-95

Engine Runs Poorly, lacks Power Idles Rough And/or Blows Black Smoke

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Date: Feb. 3, 1995

Models: 1994-1995 (BR) Ram Truck

NOTE:   THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH 5.9L H.D. OR 8.0L ENGINES BUILT PRIOR TO SEPTEMBER 1, 1994 (MDH 09-01-XX).

Symptoms:

Engine runs poorly, lacks power, idles rough and/or my blow black sake at operating temperatures.  

Diagnosis:

Test drive vehicle, ensuring that vehicle is at full operating temperatures. Using the MOPAR Diagnostic System (MDS) or the Scan Tool (DRB II 1994 MY or, DRB III 1995 MY) with appropriate diagnostic procedure manual, check the 02 circuits for the sensor outputs. If any of the above symptoms are present or DRB II/III (Scan Tool) diagnosis indicates left 02 sensor output stuck on rich rail and right on lean rail, proceed with the repair procedure.  

Parts:
 

Repair:

This bulletin involves correction of the two 02 sensors at the wire harness connectors.

1.    With the vehicle on a hoist examine the left (Figure 1) and right (Figure 2) 02 sensor wires at the black connectors. Both sensor's wire harness connections should have a BK/LB wire, DG/O wire and BK/W wire.  

 

2.    The remaining wire in the right 02 sensor connector should be a black/dark green wire. The remaining wire in the Left 02 sensor connector should be a tan/white wire.

3.    If the wires in step 2 are reversed, disconnect the two 02 sensor connectors and reconnect them in the opposite sensors. For routing refer to Figures 1 & 2.

4.    Verify that the wires are connected properly as listed in step 2.

5   . All fault codes should be cleared using the DRB II/III (Scan Tool).

Notes:

POLICY: Reimbursable within the provisions of the warranty.

TIME ALLOWANCE:
Labor operation No: 25-01-70-97 . . . . . . . . . . . . . . . . . 0. 5 hrs
                                Sensor, Oxygen- Reroute Wires and Reconnect. 94-95 BR

FAILURE CODE:   WV - Wiring Misrouted


Thanks to Barry Drodge for supplying this TSB information

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This page was edited on: May 3, 2004