Help with Idle after MPFI conversion

[Buff_Hatch]

I just did a DPFI to MPFI and everything seems to be working just great except for one thing, the engine dies while braking or down-shifting. I am not getting any ECU codes. It also dies when the AC is on..

HELP!!

 

[mustang67n]

check your wiring to the alternator.. might be a bad connection or a short somewhere in there.
also be sure your battery is fully charged. i had the same problem when i did this swap, then we charged my battery, and it ran PERFECT.

goodluck man