I have a 2000 Dodge Durango 4.7 L. The voltage when starting goes up and then back down. The alternator was tested "Good" and I replaced the PCM, due to a bad voltage regulator. The PCM was flashed before installing. Can anyone help?

 

Please add a little more detail regarding the exact issue besides "goes up and then back down". Voltage on what? Are you reading with a voltmeter or looking at the dash gauge? How high does it do up and how low does it do back down?

Edit: asking a question one time is enough. You have resurrected 10-15 year old threads asking to same question over and over. Please stick to only this one thrad and provide more information as requested.

 

To answer your question:Voltage on Dash gauge goes to 14 v and after running for 2 or 3 min it than goes to zero.I was told it could be a bad voltage regulator in the PCM from the factory. So, I now have a new one.

Also, The Dodge dealer shared with me there may be a security issue with flashing the PCM. I Do Not have a chip in the key. However, the security chip. the Dealer tells me, is in the automatic door device I use to lock & unlock my doors. The device simply has an Lock/Unlock button & a Panic button on it. Is this true or have you heard of anything like this before?

Thank you for any help

 

My 01 has chipped keys, never heard of the chip being in the remote.

 

the chip keys are grey, the non-chip keys are black, the chips are located in the key when applicable, the security should not affect battery voltage nor battery voltage read out