Oil Pressure Gauge - Flutters or Reads High

9214buick01

Bulletin: 91-8-51

Date: Dec. '91

Ref. No.: 91-284-8

Corp. Ref. No.: 138304


SUBJECT: OIL PRESSURE GAGE FLUTTERS, OR MAY READ HIGH (REPLACE SENSOR)

MODELS AFFECTED: 1990-91 REGALS WITH GAGES (OPTION UB3 OR U21)
1991 ROADMASTER ESTATE WAGONS


CONDITION:

On vehicles with gages, the oil pressure gage may flutter, or may show unusually high oil pressure (full scale).

CAUSE:

The internal resistance wire in the sensor may not be properly supported, resulting in an intermittent open condition.

CORRECTION:

Check for normal causes of high oil pressure gage readings (high resistance or open circuit), such as a poor ground path caused by loose sensor mounting, oil cooler adapter loose, or poor electrical connections. If no cause can be found, replace the [1][2]oil pressure sensor with the correct new part number listed below.

WARRANTY INFORMATION:

Use existing labor operation N2220.

NEW [1][2]OIL PRESSURE SENSOR PART NUMBERS

1991 Roadmaster Estate Wagon 10205411
1990 Regal with 3.1L V6 Engine (VIN Code T) 10205410
1991 Regal with 3.1L V6 Engine (VIN Code T) 10205676
1990-91 Regal with 3800 V6 Engine (VIN Code L) 25605389

Parts are currently available from GMSPO.