Q&A

Right after i crank my truck and put it into drive/reverse it'll cut off, but will crank right back up. Also, while going down the road it'll skip or buck and the brake light will cut on. I've tried putting sea foam(or whatever its called) in, replacing the ERG valve and something in the distributer and it's still doing it. Anyone know what the deal is? Please let me know, it'll be greatly appreciated.