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Discussion Starter #1
Hi guys. I’m new with the 7.3 and it’s giving me fits. I tried installing a hydra tuner and ended up toasting the PCM unit. Sent the unit. Guy said it was unresponsive so he got a new one in and programmed it. Got the PCM back and installed. Check engine light off, WTS light cycles properly. My water fuel light is on and stays on? I crank and it doesn’t even try to fire. New motorcraft icp last. New CPS last year. Truck ran fine before PCM fried. Hooked a older snap on scanner to it with the “k20 snap on key” and it spit these codes out(pictured)
768951
 

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Does it start without the tuner hooked up? Sure you have tunes for the right pcm code?

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Discussion Starter #4
New PCM has never had a tuner plugged into it and is supposed to programmed to my pickups vin#
 

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