Engine - Rumbling/Rattling Noise

90ford38
^ ENGINE - 3.8L - BALANCE SHAFT GEAR - HEAVY "RUMBLE/RATTLE" - VEHICLES BUILT FROM 8/1/87 THROUGH 8/1/88

^ NOISE - HEAVY "RUMBLE/RATTLE" - FROM UPPER PART OF 3.8L ENGINE - VEHICLES BUILT FROM 8/1/87 THROUGH 8/1/88
Article No. 90-19-13
FORD: 1988 TAURUS, THUNDERBIRD

LINCOLN-MERCURY: 1988 CONTINENTAL, COUGAR, SABLE
This TSB article is being republished in its entirety to include a labor time of 3.8 Hrs. for the Continental which was omitted during the first publication.

ISSUE: A heavy "rumble/rattle" noise may come from the upper part of the engine. This occurs because the timing chain stretches from wear and causes the balance shaft gear to rattle. The noise is most noticeable between 1200 and 2400 engine RPM, with the transmission in drive and the engine under a load condition at part throttle.

ACTION: Install a timing gear set service kit (FODZ-6B263-A), consisting of a new design service timing chain, crank sprocket and cam sprocket which are more resistant to wear. Refer to the appropriate Car Shop Manual, Section 21-15 for service details.
PART NUMBER PART NAME CLASS

FODZ-6B263-A Service Kit - Timing Gear Set B

OTHER APPLICABLE ARTICLES: None
SUPERSEDES: 90-16-5
WARRANTY STATUS: Eligible Under Basic Warranty Coverage, Powertrain Warranty Coverage
OPERATION DESCRIPTION TIME
901913A Install Timing Chain Kit 3.8 Hr.
(Taurus, Sable & Continental)
901913A Install Timing Chain Kit 4.5 Hr.
(Thunderbird /Cougar)
DEALER CODING
BASIC PART NO. CONDITION CODE
6268 56
OASIS CODES: 497000, 499000, 702000