TSB Document:

• Sorry, the NHTSA has not posted this TSB document yet.

You can still get the detailed info from Ford for this TSB. Call your local Ford dealer's service department & ask for a copy of TSB# 13987.

Affected Component: POWER TRAIN:AUTOMATIC TRANSMISSION

Summary

SOME VEHICLES EQUIPPED WITH 3.8L ENGINES MAY EXHIBIT ENGINE SPARK KNOCK ON HEAVY ACCELERATION WITH 87 OCTANE FUEL. HOT WEATHER AND LOWER OCTAINE FUEL CAN CONTRIBUTE TO THE CAUSE OF A SLIGHT KNOCK ON HEAVY ACCELERATION. THOUGH NO DAMAGE TO THE ENGINE WILL OCCUR, SOME CUSTOMERS REPORT THAT THE SOUND IS NOT DESIRABLE. *TT

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