2.4L LE5 Performance Tech 16 valve 171 hp EcoTec with 163 lb-ft of torque

engine swap, now car wont crank over

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Old 10-16-2010, 07:22 PM
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Exclamation engine swap, now car wont crank over

We just got done installing the new motor, and the car wont even crank over

odd notes:

the radio stays on even when the doors closed and keys out and locked?
no security light, no cel,


the car just wont crank over, everything else works, the starter is getting power too
Old 10-16-2010, 07:41 PM
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From my recollection you can't just swap a motor in. You have to do a whole learn of the new motor to the ecm for it to crank due to the increased security theft deterrents in newer vehicles
Old 10-22-2010, 11:23 AM
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yea ive herd the same thing ^. it sucks but maybe you can call gm or something and they can help you
Old 10-22-2010, 11:28 AM
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this is not true. i swapped engines without any relearn. i simply installed my base turbo tune and it turned over. i suggest you check your grounds we had no issues with my build and install but i had a certified pro installing it in his garage. the **** ass never missed a beat. is the valvecover gronded to the head? recheck all youre grounds and connections.
Old 10-22-2010, 04:30 PM
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Ur missing a ground on the motor mine did the same thing after we took the trans out and we forgot to hook up a couple ground straps
Old 10-22-2010, 04:33 PM
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Originally Posted by mmcgee123
Ur missing a ground on the motor mine did the same thing after we took the trans out and we forgot to hook up a couple ground straps
He speaks the truth. I missed the ground from my starter to the bellhousing and it wouldn't crank. You've missed a ground somewhere.
Old 10-22-2010, 06:37 PM
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nah i had the ground on the power on the starter lol, shoulda updated this a while ago, cars running great
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