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(mid-90's Buick) Someone I know had an ECM injector drive output go bad. He got a replacement ECM online, but had to take it to a shop (not a dealer) to get it 'initialized' (If that's the right word.)

He says that, to do this, the tech had the ignition switch in the 'run' position, and during the entire 20-minute process, the starter motor ran. I have no reason to doubt his report, but I find it kind of astonishing.

My question is, why would they run the starter like that? All I can think is maybe to 'characterize' the engine. But, it doesn't seem like they'd have to do that for 20 minutes.

George
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Most of the time if you buy a replacement computer, it comes pre-programmed with the latest software. Give them the VIN and milage on your car and they should be good to go. On some computers, notably GM trucks, give them your tire size as well - so the speedometer reads properly.

Con FUse
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