i have a ford f 150 1997 with four wheel drive . 2 years ago i had a problem passing the emissions test and ended up getting a egr valve
replaced and it passed last year i did not drive 5000 miles so i did not need an emmisions test . so this year i have driven my truck over 15000 miles and will need the test . i have a friend that hooked up the computer to the truck and said there is no light and no codes. he told me i need to drive some more to complete the cycle.. well for 2 years i never had a ck engine light on? and i have driven for at least 500 miles ? dont want to pay the emissions test if i know it will fail ? what should i do?