2004 to 2007 engine swap
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2004 to 2007 engine swap
Hello all, I am a newbie on here, and I know nothing about repairing vehicles.
I have a 2004 f150 5.4 and just swapped the engine for a used 2007 f150 5.4 with low mileage, now it runs very rough at idle and started right after the swap. The mechanic is now trying to say that there is a timing difference between the 2 engines and that he has to go into the engine and change some timing parts or something, and if that is the case then why would he figure that out after the job was done? Needless to say I am taking the truck elsewhere to get the job finished.
Also, I have been calling around and have spoken to 3 different ford techs that are saying that he doesn't know what he is talking about and that the core of the engine did not change between those years.
I am hoping that someone can lead me in the right direction here so I can figure out what the true scenario may be.
Thank you all in advance
I have a 2004 f150 5.4 and just swapped the engine for a used 2007 f150 5.4 with low mileage, now it runs very rough at idle and started right after the swap. The mechanic is now trying to say that there is a timing difference between the 2 engines and that he has to go into the engine and change some timing parts or something, and if that is the case then why would he figure that out after the job was done? Needless to say I am taking the truck elsewhere to get the job finished.
Also, I have been calling around and have spoken to 3 different ford techs that are saying that he doesn't know what he is talking about and that the core of the engine did not change between those years.
I am hoping that someone can lead me in the right direction here so I can figure out what the true scenario may be.
Thank you all in advance
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Are there different sensors or something in the engine that would differ from the old engine? I do know that some of the other parts like injectors, etc were different on the new engine. And thats about all I know about it
Thanks
Thanks
Cargo Master
Joined: Jul 2005
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From: Not as far west as I want
Yes, I think they should be able to use your current PCM. Not sure on the specifics. However, the settings might be different on the new engine.
I am not positive on the whole thing, but that is what I've read.
I am not positive on the whole thing, but that is what I've read.
Cargo Master
Joined: Jul 2005
Posts: 3,495
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From: Not as far west as I want
I don't remember where. You might look in the modular engine section here. It covers the 4.6 and 5.4, Modular V8 (4.6L, 5.4L) - Ford Truck Enthusiasts Forums
There is also a search feature here that offers lots of reading too.
There is also a search feature here that offers lots of reading too.
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Cargo Master
Joined: Jul 2005
Posts: 3,495
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From: Not as far west as I want
Good luck. Keep us updated. I'm curious what the fix is. Once the PCM and the engine are talking there might be some other maintence issues like coil packs, spark plus, and vacuum lines. In the grand scheme that is minor.
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