Tank Assembly Problems of Mercury Cougar

Mercury Cougar owners have reported 13 problems related to tank assembly (under the gasoline fuel system category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Mercury Cougar based on all problems reported for the Cougar.

1 Tank Assembly problem of the 2001 Mercury Cougar

Failure Date: 03/01/2019

The contact owns a 2001 Mercury Cougar. The contact stated that once the fuel level reached a half tank of gasoline, the vehicle hesitated and loss motive power with the accelerator pedal depressed. The contact stated that the trans axle and check engine warning lights were illuminated. Columbia Ford Lincoln Hyundai (700 7th Ave, longview, wa 98632) was notified of the failure. The contact was informed that the vehicle was not subjected to a recall. The manufacturer was contacted and notified of the failure. The vehicle was not repaired. The failure mileage was approximately 136,000.

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2 Tank Assembly problem of the 2000 Mercury Cougar

Failure Date: 08/15/2009

The contact owns a 2000 Mercury Cougar. The contact stated that the vehicle failed to start. The battery was replaced and the contact received a jump start before he was able to start the vehicle. The vehicle remained on for a few minutes before stalling. The vehicle was taken to an independent mechanic where the contact was advised that the alternator would need to be replaced. The alternator was replaced. The contact was able to drive the vehicle but found that the headlights were intermittently dimming. The contact was advised by the dealer and manufacturer that the vehicle was not included in NHTSA campaign id number: 01v031000 (electrical system: battery: cables). The vehicle was not repaired. In addition, the contact stated that the vehicle would hesitate and that fuel was not traveling to the engine correctly even with a full tank of fuel. The dealer and manufacturer both advised that contact that the vehicle was not included in NHTSA campaign id number: 04v421000 (fuel system, gasoline). The vehicle was not repaired. The failure mileage was 98,000 and the current mileage was 100,000.

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3 Tank Assembly problem of the 1999 Mercury Cougar

Failure Date: 07/15/2007

I've got a repeatable failure that happens when I make a left turn or go up an incline while I have less than a quarter of a tank of gas in my vehicle. The car will lose power and start to stutter, and has completely stalled a couple times. I haven't had any parts replaced yet, but I found other people with this problem and an extended coverage program offered by the manufacturer that they say doesn't apply to my vehicle. This has also been NHTSA campaign id as well. According to the emails with customer service the program was for cars manufactured may 25, 1999 through November 30, 2001. My car was manufactured on may 24, 1999. I questioned if the one day difference in manufacture could actually exclude my vehicle, if my vehicle could actually be affected, and whether there was some way to tell if the affected part was installed in my vehicle (possibly by part number or serial number of the installed part). There are apparently at least several different parts (the pre extended program part, the bad part being replaced during the program, and the one replacing the bad part. I have requested but not been given a way to tell the difference between the different parts.

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4 Tank Assembly problem of the 1999 Mercury Cougar

Failure Date: 06/15/2006

: the contact stated the vehicle hesitated, stalled, lost power and backfired when the fuel tank reached a level of three quarters to one half full. The vehicle restarted immediately after it stalled. The contact discovered NHTSA recall 04v421000, concerning the fuel system online. The VIN was not included in the recall.

5 Tank Assembly problem of the 1999 Mercury Cougar

Failure Date: 09/01/2005

I have had multiple problems since I purchased the car in 10/99. I have had the sun roof replaced once and now needs it again for the same reason; the track broke ($1000 to fix, $2000 if I go to the dealer). The ignition switch has been changed twice because it sticks (it need to be changed again). In 2/00 it started: whenever the car got cold, the car would either not turn on or would just shut down while I was driving. The car was brought to the dealer multiple times for the same problem. He changed numerous parts but was unable to resolve the issue, until a 2004 recall for something to do with the fuel system. About three years ago the engine light came on at which time the dealer replaced the catalytic converter. A few weeks later the engine light came on again at which time the dealer told me it was the head gasket. That, I had replaced by an independent mechanic and then still had to bring it back to the dealer to have the catalytic converter done a second time, and to have the computer reset to have the engine light shut off. Anytime I have work done on the car, even just maintenance, the check coolant light or the engine light comes on and I have to bring it to the dealer to have it shut off. In 9/05 the coolant light illuminated and a day later the engine light came on, I brought the car to an independent mechanic who changed the overflow tank because he believed it to be a bad sensor. After fixing that, the engine light would not go off as well as one of my brake lights. He did multiple tests and determined that it is something electrical, unfortunately he could not pinpoint the exact cause of the electrical problem. For some reason those lights have gone off but I expect them come back on soon.

6 Tank Assembly problem of the 1999 Mercury Cougar

Failure Date: 05/05/2003

When making a left hand turn and a half a tank of fuel or below, the engine misfires and almost stalls out, this presents a hazard when making a left-hand turn with oncoming traffic coming. The fuel system has been checked and seems to be operating fine.

7 Tank Assembly problem of the 2000 Mercury Cougar

Failure Date: 04/22/2003

While driving at any speed and when the fuel level was at 1/4 full, the vehicle stalled. Currently when the fuel level is 1/2 full, the vehicle continued to stall. A technical service bulletin was issued concerning this problem. The vehicle would not restart until it was filled with gas. This problem occurred at any speed on all road types. (this problem also applied to the consumers second vehicle which the same make/model/year, VIN# 1zwft61l5y5609332, with the odometer reading of 60k miles).

8 Tank Assembly problem of the 2002 Mercury Cougar

Failure Date: 06/06/2002

On approx. The 15th of March, my daughter lost all power in car while driving through lunch traffic in town and was nearly rearended by a petroluem tanker. We brought car in to dealership. They ran a battery test and b/c that came back fine they refused to do any further testing. She was having problems getting the key to turn over to start car. They fixed that problem at the same time. On the 15th of may, the car came out of the shop for the 2nd time after it had lost power twice on her while driving again. Her. The dealership contacted Ford headquarters for recalls. None had been posted, but Ford said if they check the fuel filter at the bottem of the fuel tank we would probably find the problem with losing all power(braking, steering, ect. ) was that the filter was clogged therefore no gas was getting to the motor and thus this was why the car was losing power. They replaced the fuel pump and said that was a temporary fix for approx the next 3000 miles(for it was happening about every 3000 miles). And that we would have to bring the car in every 3000 miles to remain safe from losing power when it became clogged again. We decided that since Ford knew about the problem and refused to do a recall to fix the problem that anyone in my family who drove or rode in the car would be putting their life in danger so we tried to trade the car. The dealership wanted us to pay a $6,000 deficit so we decided to keep the car until we could complete the lemon law process. Three weeks later, my daughter stated she had got really bad gas mileage(15 miles took 1/4 of a tank she measured it) the day before and she was afraid that the car was going to lose power again. It was a Friday so the car couldn't go to the dealership til the following week. That night, the 6th of June. She lost brakes and steering while going around a curve. The car hit something in the ditch and rolled 1. 5x's to rest upside down. No airbags deployed. Seatbeat held her in car. Pictures of car and scene avail.

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9 Tank Assembly problem of the 2000 Mercury Cougar

Failure Date: 04/02/2002

While driving at any speed, when fuel level was at 1/4 full vehicle stalled. Currently, when the fuel tank level is at 1/2 full the vehicle still stalls. A technical service bulletin was issued concerning this problem. The vehicle would run out of gas when there was 1/4-1/2 tank of gas.

10 Tank Assembly problem of the 1999 Mercury Cougar

Failure Date: 07/20/2000

No summary listed for above vehicle.

11 Tank Assembly problem of the 2000 Mercury Cougar

Failure Date: 07/14/2000

Fuel tank needs to be replaced . This is 3rd time due to faulty seal which causes fuel leakage .

12 Tank Assembly problem of the 1999 Mercury Cougar

A seal around the gas tank swelled up so much that it broke, causing excessive amount of fuel to leak and spray everywhere. Fire department was called . Dealer replaced seal.

13 Tank Assembly problem of the 1999 Mercury Cougar

Plastic molded gas tank is disintegrating, causing vehicle to stall when driven at speeds between 60-70 mph. Vehicle has been bought back by manufacturer.


Other Common Gasoline Fuel System related problems of Mercury Cougar


Fuel Economy of Cougar Vehicles
Cougar Service Bulletins
Cougar Safety Recalls
Cougar Defect Investigations