Well, this is the problem with my wife's 2000 Mustang V6. Everytime I am driving the car on the highway and i try to accelerate it start pinging. I already try using 87,89,93 octane fuel and it is the same. I already change the sparkplugs and still does it. The bad thing it started doing that when the car was about 20,000 miles and now the car is 55,000 miles. Some guys told me that it is the MAF sensor. Need some advise.
