I have a 2003 chevy impala.the headgasket blew.i changed the headgasket, intake manifold gasket, thermastat, and after I put everything back together when I crank it it want stay on it cut off
Immediately when I take my foot off the gas.and it makes a
loud noise and just want stay crunk.any help!!!!!
Sounds like something wasn't hooked back up or installed properly. Check all your hose connections and check for vacuum leaks. You'll have to go back and recheck your work.