just picked up a stock ecu from a friend and installed it so i can send mine to be flashed but now the car wont start what gives somebody please help me

 

You have to have the new ecu set to your key otherwise the car wont start.

 

how the hell do you do that? thanks

 

wait one second do you know this for a fact or is it just a guess? because i know a lot of people give bad advice on things they dont know about. please explain

 

do it

 

How?

 

it has to do with the immobilizer. His ECU is looking for his key. You may be able to get it to start by holding his key right next to the ignition while trying to start it, but I'm not sure if that will work. Just an idea. Good luck.

 

hi all,

it's the immobilizer. ecu has to be programmed to recognize your key. my warranty for the 04 has free towing service. so i had them tow it to the dealer and they programmed it in like 10 min. what a pain but luckily it was free.

slvrevo

 

You can't just throw in anybodys ecu and drive off has to make it work for you.