Chrishbsbll

iTrader: (2)

I just did a battery relocation to the trunk. Upon starting the car the car rpms will jump to 3k then tries to die. If I feather the gas pedal for a few seconds the car will then Idle. After that it I rev the car very slightly the rpms will jump to 3k and hang for about 5 seconds then falls very slowly.

Nothing was changed on the tune at all. Any ideas what could be causing this? maybe a ground? or does the pcm have to re learn after being disconnected from the power source?

Thanks in advance.

MUSTANGBRKR02

iTrader: (91)

Check all of your connections. Let the car idle for a little bit after that.

SS SLP2

iTrader: (8)

"does the pcm have to re learn after being disconnected from the power source? "

some time yea, some time nay, most time yea, good time to try
Johnny

sreve

iTrader: (3)

Idle will relearn key on eng off slowly cycle the pedal to the floor and back a couple
times turn key off and restart.

Sarg

iTrader: (6)

Also, all your long term fuel trims will have been reset. I would double check grounds and verify the voltage at the front vs at the battery. Injectors work off a voltage scale so if they are seeing less voltage than previously they will be working off of a different offset table.