I recently pulled the engine out of my DA to spray the bay. I put a new valve cover gasket and intake manifold gasket on, if that helps. Also, I tested the battery and alternator and they are fine. The problem im having is it starts up fine then the rpms fall right down and it stalls out. Also, it will drive fine, no sputtering or anything but as soon as you let off the throttle and come to a stop it quits running. Any insight would be appreciated.

 

timing issue or a misfire, do you have any codes?

 

vaccum leak

 

IACV.