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Dec 23, 2012 | 05:28 PM

Chrishbsbll

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Staging Lane

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From: North Carolina

Need help...

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.

Dec 23, 2012 | 06:09 PM

MUSTANGBRKR02

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From: Maine

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

Dec 23, 2012 | 06:25 PM

SS SLP2

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From: SILSBEE TX

"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

Dec 24, 2012 | 03:38 AM

sreve

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

Dec 24, 2012 | 07:30 AM

Sarg

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From: Atlanta, GA

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.

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