Oil Pressure Gauge - Flutters/Reads High

9208pontiac01

Bulletin Number: 91-8-19A
Reference Number: 138304
Publish Date: 11/91


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


Models 1990-91 6000, FIREBIRD, SUNBIRD,
Affected: GRAND AM, GRAND PRIX AND
TRANS SPORT MODELS


This bulletin is being revised to include Trans Sport models in the title of the bulletin. This bulletin cancels and replaces bulletin 91-8-19 issued 11/91. Please discard bulletin 91-8-19.

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 from the attached chart.

Warranty Information:

Use existing labor operation N2220.

NEW [1][2]OIL PRESSURE SENSOR PART NUMBERS 1990 - 1991 MODELS

Engine
Carline Engine(s) VIN Codes New P/N Replaces

6000 LR8(90) R 10045775 Existing
LR8(91) R 10205676 10096200
LHO(90) T 10205410 10096199
LHO(91) T 10205676 10096200
Firebird LHO T 10205410 1643535
L03/LB9/L98 E,F,8 10205411 10096207


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

1990 - 1991 MODELS

Engine
Carline Engine(s) VIN Codes New P/N Replaces

Sunbird exc. LD2/LGO K,M,T,U 10191433 1647135
And Grand Am LD2/LGO A,D 22578692 22542436

Grand Prix LHO(90) T 10205410 10096199
LHO(91) T 10205676 10096200
LQ1 X 10207183 10137630
LD2 D 22578692 22542436

Trans Sport LG6(90) D 10205410 10096199
LG6(91) D 10205676 10096200

Parts are currently available from GMSPO.