Fuel - Driveability, Hard or No Start When Cold

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Bulletin No.: T-92-47
File in Group: 6E
Number: 93
Corp. Ref. No.: 216503
Date: Jan. 1992


SUBJECT: LOSS OF POWER, TIP-IN HESITATION, HARD/NO START WHEN COLD, ENGINE ROUGHNESS

MODELS AFFECTED: 1991-1992 BROUGHAMS EQUIPPED WITH THE 5.OL (ENGINE CODE E) OR 5.7L (ENGINE CODE 7) TBI ENGINE


Some 1991-1992 Broughams equipped with the 5.0L or 5.7L TBI may experience any of the following conditions:

^ Loss of power
^ Tip-in hesitation
^ Hard start when cold
^ No start when cold
^ Rough idle
^ Roughness under a load

The cause of this condition may be deterioration of the fuel pump coupler hose.

To determine if the coupler is deteriorated, perform the fuel system diagnosis in Chart A-7 of Section 6E.

If fuel pressure is low, remove the fuel sending unit per the appropriate Service Information Manual. Visually inspect the fuel coupler for any signs of internal deterioration. If found, replace the fuel coupler hose with P/N 25018041. This hose is made of Viton which will provide resistance to deterioration. It comes packaged in kit form: the coupler and two white plastic hose clamps.

Parts are currently available from GMSPO.

For warranty purposes use Labor Operation J5590 at .8 hour.