Fleetwood Brougham V8-307 5.0L (1989)
Pick-Up Coil: Customer Interest
Intermittent MIL Flickering, Poor Driveability, No DTC's
Bulletin No.
T-90-64
File in Group
6E
Number
79
Corp. Ref. No.
016515
Date
April, 1990
SUBJECT:
INTERMITTENT FLICKERING CHECK ENGINE LIGHT, POOR DRIVEABILITY, NO CODES STORED
MODELS AFFECTED:
1986-1990 BROUGHAMS WITH 5.0L ENGINE (VIN CODE Y)
Some 1986-1990 Broughams equipped with 5.0L engine may experience an intermittent flickering check engine light, accompanied by an unstable idle,
miss, or rough running engine, with no codes stored. This condition may be caused by a momentary internal open in the distributor pole piece/pick-tip
coil.
To repair this condition, use the following procedure:
1.
Check ECM power circuits 480 and 439 for opens.
2.
Check ECM ground circuit 450 for open.
3.
1988-1990 models, go to step 5.
4.
On 1986 and 1987 models perform ECM replacement check, chart C1 in Section 6E1-C1, if passes ECM replacement check go to step 5.
5.
Replace distributor pole piece/pick-up coil. Refer to Section 6D of the appropriate Service Information Manual.
