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Discussion Starter #1
Hi,

I have a 2004 xterra, Auto trans, 3.3 N/A. The ECM has died and I am looking for a replacement. My first impulse was just to get one from a junkyard for another '04, AT, 3.3NA, but my mechanic said he thought it would still need to be reprogrammed and recommended that I send mine out to be rebuilt.

Can anyone help me out with this? I can get a junkyard unit for about $85 vs. $500 for the rebuild. Will a junkyard unit be plug and play?

Thanks!
 

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That makes sense for something like an engine, where a freshly rebuilt motor has more value than some random high mileage wildcard. But the ECU's are not prone to failure and I'd expect the same model year and N/A motor to work like a champ. In fact, rebuilding one that has previously failed seems highly questionable to me. I also suspect your mechanic would stand to make a few bucks for his recommendation versus you obtaining one yourself. Many mechanics will straight out refuse to install customer obtained parts because they rely on that 30% margin on parts to feed their familes :)
 

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Thanks Zombat and Smason for the replies.

That's what I was thinking too. Did a bit more digging over the weekend and I cant find any other mention of needing to reprogram an ECM... So I'm thinking I'm going to go for the junkyard unit...
 

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Thanks Zombat and Smason for the replies.

That's what I was thinking too. Did a bit more digging over the weekend and I cant find any other mention of needing to reprogram an ECM... So I'm thinking I'm going to go for the junkyard unit...
Hi, was wondering what ever happened with this. I have a 1st gen too and was wondering about the programming. Did you need to get it programmed?
 

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No programming is required if the vehicle has the same equipment. Second gen need keys programmed and idle set but you shouldn’t have to worry about those things
 
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