don ruggles 15 Year Member Jan 11, 2013 61 4 8 Dec 17, 2021 #1 Dec 17, 2021 #1 Guys, I'm thinking vacuum leak causing this or egr, but why no codes? Has original coil pack on it. 05 ,4.0 mustang. Any help is appreciated.
Guys, I'm thinking vacuum leak causing this or egr, but why no codes? Has original coil pack on it. 05 ,4.0 mustang. Any help is appreciated.
don ruggles 15 Year Member Jan 11, 2013 61 4 8 Dec 20, 2021 #2 Dec 20, 2021 #2 Has a #3 engine miss code now. PO 303. Bought a coil pack. 101 K miles on old one.