1. Main Computer had a catastrophic failure which caused the following:
- O2 sensors burned out.
- Catalytic converters X3 of them.
- Early sparkplug wire breakdown.
- Fuel injectors flooded the engine with fuel which caused early piston ring wearout while trying to get it to a mechanic 5 miles away.
- Engine started making a mooing sound like a cow. Found it was the air bypass valve.
2. The transmission completely failed and had to be rebuilt.
3. Major vacuum leaks.
4. Rear differential leaks.
Just to name a few....
All of the problems I have had happened less than 30 days after the warrenty ran out.
It sounds to me like you are using crappy gas or are trying to drive the car as if it's your old car. It's a large American coupe, it's big, heavy and demands some respect and money put into the fuel system, starting with quality gas.
Ford Customer Service sucks - 5 service trips to investigate our complaint about slipping in the tranny (automatic) on hills and generally sluggish performance resulted in consistent "nothing wrong" reports - including the final trip where we refused to take that answer - then, and only then, did they report that the car had an "imploded torque converter" and charged us $2000 to replace it with a rebuilt unit - Ford refused to help at all. Car had run out of warranty, and even though the problem had been there all along, Ford said "tough".
Think we'll ever buy another Ford (Volvo, Jag, etc.)???
Wow, the preceding entry regarding transmission problems could have been written by me! Pretty much the same thing happened here in So. CA - Multiple trips to the dealer, to complain about the lack of get up and go. It wasn't until the warranty was gone that they found the bad tranny. And of course, Ford and the dealers were useless.