nashvillefreak
+1y
I have a 99 crew cab with the 5.7 in it and im having troubles with rough idle only when I'm in drive and my foot is on the break the rpm's drop and raise it goes from 500 to 700 RPMs it's just up-and-down up-and-down, it doesn't do it when the truck is in park there are no check engine lights and I just sprayed a bottle of throttlebody cleaner on the throttle body after I took it off the motor, I noticed there was a lot of carbon buildup that I cleaned off I was hoping that would fix it but it still does it any help would be greatly appreciated