Oldsmobile Workshop Service and Repair Manuals

Intake Manifold: Customer Interest
Highway Chuggle and Spark Knock Concerns

SUBJECT:

HIGHWAY CHUGGLE AND SPARK KNOCK CONCERNS

1987 FIRENZA WITH 2.0L OHC L4 ENGINE

MODELS/YEARS:

IN ALL TRANSAXLE APPLICATIONS
(INSTALLATION OF NEW PARTS)

NUMBER:

87-T-75

CORP. REF. NO.: 836538

DATE:

December 1988

SECTION:

6E

Customers comments that identify a highway low-speed chuggle or spark knock concern may be repaired with the following changes.

-

Intake Manifold Drop-Tube Kit    Part Number 10106050

-

EGR Valve:

Automatic Transaxle

Part Number 17112004

Manual Transaxle

Part Number 17112005

-

PROM Package:

New PROM

I.D.

New

Transaxle

Part Number

(Scan Tool)

Broadcast Code

Automatic

16129056

9092

ANXH

Manual

16129057

9072

ANXD

Parts are currently available through GMSPO.

If driveability conditions still continue after the above changes, refer to service manual section 6E2-B for further directions.

WARRANTY INFORMATION

Labor Operation Number:

T1384

Labor Time:

.9 hrs.

Trouble Code:

92