I have a 2003 ford ranger with a 3.0 v6. I just recently unhooked the muffler to make it sound deeper. When the truck is in park idling an I rev the engine it starts to sputter kinda like a rally car. It starts doing it at 3000 rpm when I hold the gas to rev it. But when is in drive I can get it to like 5000 rpm and it doesn't sputter at all an sounds normal. And I wanted to know why it does that? My friend has the same engine in his ranger but It doesn't do that to his. Is it because I took the muffler off and it ain't getting enough back pressure? Thanks for helping!
Read more: Truck sputters at high rpm?
