First occurrence in December:
- Driving 70 on highway
- Suddenly lost throttle response so I pulled over as the engine was sputtering and making a sort of "popping" exhaust sound beneath me before it eventually died
- It would start back up but then immediately fall to a sputter and die again and threw a code
- By the time the tow truck came about an hour later, the car started back up and idled just fine
- Towed to dealership anyway and had fuel filter replaced, the fuel system serviced, and the code cleared (something about fuel I don't recall)
Second occurrence in February:
- Drove 8 miles from work to home and parked the car
- About 30 minute later I head back out for 5 miles and park the car
- About 15-20 minutes later I leave store, start it, and as it lowers to normal idle it begins to sputter a bit and acts like it wants to die
- I turn it off and let it sit for maybe 10 minutes and it starts up and runs fine
Third occurrence in February a couple of days later:
- Drove to the airport about 20 miles and parked the car
- About 30-45 minutes later I start the car to leave. The engine lowers to idle speed and proceeds to sputter/pop/sound like it wants to die but doesn't.
- I turn it off and let it sit for maybe 10-20 minutes and it starts up and runs fine
I took it to the dealership again and of course they couldn't duplicate the issue so I had them replace the pump anyway. Worst case scenario is yay I have a new fuel pump.
It still does this after:
- Fuel filter replaced
- Fuel system cleaning
- Fuel pump replaced
- MAF sensor cleaned
- Air filter replaced
- Spark plugs replaced early last year
Ideas? The Mach has a 120,000 on it for what it's worth. I'm not sure if that sounds like an IAC or something fuel related like injectors or coils. Or maybe I should just throw all three at it.
The bolded is the long story short