general problems of the 2004 Mercury Grand Marquis

The contact owns a 2004 Mercury Grand Marquis. The contact stated that she noticed a leak underneath her vehicle with the check engine and coolant warning lights illuminated. The contact had taken the vehicle to an independent mechanic where it was discovered that coolant had been leaking from a crack in the intake manifold. The dealer nor the manufacturer had been notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 150,000.

While driving, I came to a stop light and suddenly, the car idled high and lurched forward while my foot was on the brake, luckily, I was stopped well away from the vehicle in front of me. The car idled high and seemed to have a mind of it's own. I took the back roads home and backed into our garage. The car smelled hot, and I though I had smoked my brakes, trying to keep control of it. Later that night, I told my husband about the car's actions and he did not believe me, though my daughter who was with me at the time confirmed that the car had indeed accelerated on it's own. My husband started the car and it did idle high and get hot once again, although only parked with no one in it. He thought he knew what the problem was and we turned off the car and closed the hood and went inside to order the part. A few minutes later, we heard a couple popping noises and I opened the door that led into the garage from the basement. Smoke was coming into the house and my husband said that a flame shot over my head. The car had caught on fire under the closed hood. We called the fire department, but by the time they arrived, a good portion of the basement was on fire. The house was a total loss. My husband though that the pvc elbow under the hood was sticking closed, so that is the part we were going to order. Unsure, if that was the real cause or not. The car did not have any warning lights or any other indications of a problem before this incident.

I was driving at a speed of 45mph on a county road in rush hour traffic when my car's engine light came on simultaneously as power of vehicle slowed while making a rattle type noise and cab smelled strongly of gas. I rolled windows down pulled over within a block to a napa store. The employee told me they do not run diagnostics and I would have to take it somewhere. I drove slowly to a 2nd auto parts store 1 mile away to run diagnostics. Once done, diagnostics identified a miss-fire on spark plug #2. Had vehicle towed to home and took 'heli-coil' off and spark plug came out with it damaged. The heli coil was also damaged. The threads of spark plug was flattened three threads from bottom. Contacted auto parts store again where the technician told me that Ford has been having problems with there triton spark plugs blowing out on the 5. 4l engines that they only screw in 3 threads into the head of the engine and there were pending lawsuits. The next day I called Ford dealership and spoke with the acting service manager. "he told me there was nothing he could do about it and I should call customer care of Ford: 800-392-3673. I did and rep. Told me there was no recall and my vehicle and it was out of warranty at 101,100. Mi. There was nothing they could do. In the event there were to be a re-call to save my receipts and Ford would reimburse me. I read about the problems that multiple customers were or had had regarding the same problem with a few vehicles leaking gas with the problem. This is all happening when the cars, trucks and suvs exceeds 100,000miles. I feel this is not only poor manufacturing of an inferior aluminum casing and spark plug and also not enough threads to hold the spark plug in safely. To have it jump out allows gas to also be expelled onto the cars remaining parts and vapors could ignite causing the car to potentially catch fire.

When driving at low speeds, the vehicle would surge forward without warning. The consumer will take the vehicle to the dealership for inspection. Please provide any further details.