My 04 5.9 is dead petaling on the first take off after start up. After that it runs fine, until I turn the truck off and start it back up.
Then once again I get a dead petal on the first take off, then runs fine again. Cold or warm I'm getting a dead petal on the first take off. The only code that's shows is p0720 which is speed output sensor. Any info would be great thanks.
I fixed the speed output sensor and erased the p0720 code. I'm still getting a dead petal on the first take off after starting my truck every time. If I leave it running all day it never does it again. Truck starts fine every time no hard starts. Now there's no codes what could it be