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Service bulletins for the 1999 Mercury Cougar

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.

229 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
171742003-11-18. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. MALFUNCTION INDICATOR LAMP ON AND DIAGNOSTIC TROUBLE CODES P0171/P0174 OR P1072/P0175 STORED IN MEMORY OR AS HARD FAULTS. HESITATION, LACK OF POWER OR RUNS ROUGH CONDITION. *TT
0315142003-10-10. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. THE MALFUNCTION INDICATOR LAMP (MIL) MAY BE ILLUMINATED AND DIAGNOSTIC TROUBLE CODES (DTCS) P1380, P1381, P1383, AND/OR P0340 MAY BE STORED IN MEMORY. *TT
160282002-11-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES EQUIPPED WITH A 2.5L ENGINE MAY EXHIBIT MULTIPLE MISFIRE DIAGNOSTIC TROUBLE CODES WITH NO DRIVEABILITY CONCERNS NOTED. *TT
012462002-04-18. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. ENGINE OIL SYSTEM PRIMING PROCEDURES, SERVICE TIPS FOR REPORTS OF PREMATURE ENGINE FAILURE. *TT
153902002-04-17. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). SOME VEHICLES MAY EXHIBIT A CHECK ENGINE LIGHT AND/OR EGR DIAGNOSTIC TROUBLE CODES 332, P0401, P1407 (LACKOF EGR FLOW). *TT
02142002-04-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME ENGINE ASSEMBLIES WITH ALUMINUM CYLINDER HEADS REPAIRED IN-VEHILE HAVE BEEN FOUND TO LEAK COOLANT AND/OR OIL FROM THE CYLINDER HEAD GASKET AREA. *TT
012052002-02-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES MAY EXHIBIT VACUUM OR AIR LEAKS IN THE INTAKE MANIFOLD AND / OR ENGINE SYSTEM CAUSING DIAGNOSTIC TROUBLE CODES P0171 AND OR P0174. *TT
01472001-05-30. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SUBJECT REGARDING ENGINE OIL RECOMMENDATIONS FOR USE IN 2001 VEHICLES - SAE 5W-20 MOTOR OIL. *TT
143552001-04-18. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INFORMATION PERTAINING TO DURATEC OIL PAN INVESTIGATION. *JB
001862001-04-17. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. VEHICLES MAY EXPERIENCE NO START CONDITION WHEN THE WIPER SWITCH IS IN THE INTERMITTENT OR LOW-SPEED SETTING DURING VEHICLE START-UP. *JB
01142001-04-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. EXPERIENCING A SPARK KNOCK OR PRE-IGNITION CONDITION ON VEHICLES WITH AN AUTOMATIC OR MANUAL TRANSMISSION DURING STEADY CRUISE DRIVING OR UNDER LIGHT ACCELERATION. *TT
145962001-04-02. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. EXHIBITING ONE OR MULTIPLE STUDS BREAK ON EXHAUST FLANGES. *JB
145422001-03-14. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. SOME VEHICLES MAY EXHIBIT ONE OR MULTIPLE THREADED STUDS BREAK ON THE EXHAUST FLANGES. THIS MAY BE NOTED BY A RATTLING NOISE, EXHAUST LEAK OR A SCRAPING NOISE WHEN DRIVING. *TT
002522001-03-13. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. ON SOME VEHICLES, AN OBJECTIONABLE EXHAUST, SULFUR, OR ROTTEN EGG ODOR FOLLOWING AGGRESSIVE DRIVING, SUCH AS FULL-THROTTLE ACCELERATION MAY OCCUR. *TT
118132001-01-12. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES MAY EXPERIENCE A CONCERN OF AN INTERMITTENT NO CRANK, NO START CONDITION. *TT
46092001-01-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES MAY EXPERIENCE A CONCERN OF AN INTERMITTENT NO CRANK, NO START. *TT
134682000-11-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SOME VEHICLES EQUIPPED WITH 2.0L ENGINE MAY EXHIBIT A TIMING BELT SHREDDING OR TIMING BELT STRIKING THE FRONT COVER. *TT
130932000-11-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. SOME VEHICLES EQUIPPED WITH 2.5L MAY EXHIBIT A SULFUR SMELL FROM THE EXHAUST. (T
125242000-11-14. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. ADDRESSING CONCERNS OF CONTAMINATION IN THE COOLANT EXPANSION TANK (LOCATED ON THE PASSENGER SIDE INNER FENDER). *TT
120892000-06-16. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. SOME VEHICLES MAY EXHIBIT A LOW COOLANT LIGHT CONCERN, WORKSHOP MANUAL DIAGNOSIS MAY NOT LEAD TO A RESOLUTION, NOTE WORKSHOP MANUAL UPDATES. *MJS
139752000-06-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. VEHICLES WITH 2.5L ENGINE AND BUILT AFTER MAY 25, 1999 MAY EXHIBIT AN INTERMITTENT HARD / NO START, ROUGH IDLE OR HESITATION AFTER A HOT SOAK OF APPROXIMATELY 30 MINUTES. *TT
138302000-06-13. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES EQUIPPED WITH A 2.5L ENGINE AND BUILT AFTER MAY 5, 1999 MAY EXHIBIT AN INTERMITTENT HARD/NO START, ROUGH IDLE OR HESITATION AFTER A HOT SOAK OF APPROXINATELY 30 MINUTES. *MJS
83342000-06-12. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES EQUIPPED WITH A 2.5 ENGINE AND BUILT AFTER MAY 25, 1999 MAY EXHIBIT AN INTERMITTENT HARD / NO START, ROUGH IDLE OR HESITATION AFTER A HOT SOAK OF APPROXIMATELY 30 MINUTES. *TT
74512000-05-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SOME VEHICLES EQUIPPED WITH 2.0L ENGINE MAY EXHIBIT A TIMING BELT SHREDDING OR TIMING BELT STRIKING THE FRONT COVER. *TT
65762000-05-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SERVICE TIP INFORMATION REGARDING ENGINE OIL LEAK DIAGNOSIS. *TT

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.