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Service bulletin 99155

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id608434
Published by NHTSA1999-12-01
Manufacturer's number99155
Manufacturer's date1999-07-26
NHTSA componentVEHICLE SPEED CONTROL:LINKAGES

NHTSA's summary

SOME VEHICLES MAY EXPERIENCE A LIGHT SPARK KNOCK / DETONATION OCCURRING WHILE ACCELERATING IN AMBIENT TEMPERATURES GREATER THAN 32 DEGREES C (90 DEGREES F). *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Throttle and cruise control

Vehicles listed
FORD CROWN VICTORIA1999
MERCURY GRAND MARQUIS1999

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
031832003-11-15. Service bulletin. DEDICATED COMPRESSED NATURAL GAS (CNG) ROUGH IDLE OR NO START WHEN COLD VEHICLES EQUIPPED WITH DEDICATED 4.6L OR 5.4L CNG ENGINE ONLY. *TT
52032001-01-13. Service bulletin. SOME VEHICLES MAY EXHIBIT A HARD START / LONG CRANK, COLD START STALL, COLD ROUGH IDLE CONCERN. *TT
00812000-07-21. Service bulletin. INFORMATION REGARDING ROUGH IDLE APPROXIMATELY 20 SECONDS AFTER COLD ENGINE START-UP MAY OCCUR ON SOME VEHICLES. **MR
51562000-06-20. Service bulletin. SOME VEHICLES MAY EXHIBIT A HESITATION ON HARD ACCELERATION OR LACKS POWER ON ACCELERATION. *TT
121182000-06-19. Service bulletin. SOME VEHICLES MAY EXHIBIT A HESITATION ON HARD ACCELERATION OR LACKS POWER ON ACCELERATION. *MJS