no start, not fuse box

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stamp11127

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The ignition system is a different circuit than the starting circuit. Focus on one issue at a time.
 
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punisher1130

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UPDATE: I finally got the time to mess with it, messing with the wires yielded nothing but we got it to start after removing and putting all the relays back, guessing they got jarred during shipping but it now lives, kinda. the problem now is that the new relay is already starting to get burnt and fail. other than it being a ford thing, what is the cause of this and how do I stop it?
 

Habbibie

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You have a wiring issue... a new relay burning it this early tells me you've got a wiring issue, I dont k ow if cars use overloads & thermal switches outside the fuses but if they do you wouldn't be burning up relays but accusing they dont then all road will lead bad to either a poor wiring connection somewhere or you've got a few broken strands within a wire causing a low voltage somewhere... I'll wait to see what more experienced 12 VDC guys ha r to say about this....
 

stamp11127

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1) what indications are there to verify a burning relay?

2) heated/burnt connections are due to excessive current flow through them.

3) this is a common issue with this year.

4) fairly easy fix if you have soldering skills and tools.

5) if you know of anyone with a meter and DC Amp clamp it would be nice to measure the current draw on that circuit.
 

1955moose

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I'm confused, you stated in your last post that you removed and replaced all the relays and it started. I thought 2003 had soldered in relays, in particular the one for the fuel pump. If it were me, I'd have my old fuse box resoldered and get rid of that new one. I think your chasing your tail with that new fuse box. I'd also real slowly look over everything involving the wires and plugs going up to the fuse box. From what you described that's where I'd concentrate. Their are services online that can rebuild, resolder your old one if you don't want to monkey with it.

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MWguns

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1st post: All it does is crank and that's it.

6th post: It's a '03 5.4L and it was the one in the kick panel and yes it was identical to the original, made sure of that before I bought it. New or used? Same part #s?

I do hear the fuel pump kick on like it should but I cant test fuel at the engine or spark since it wont even crank, everything turns off like it should to start but no crank or anything just dead silence other than the fuse box making its noise ...
doesn't need to be running to check fuel pressure
Now it isn't cranking but in your first post it was?
Fuse box making noise? They don't make noise other than light clicking as the relays turn on/off.

Without seeing the part #'s for both boxes you have the same symptoms other members have had when they switch to the wrong central junction box. Even though they look the same there are internal wiring differences that make them specific to individual models/years.
Exactly what i was going to say. It HAS GOT TO BE an expy that is the same model, made same EXACT YEAR, but do remember, if it is a build date of 06-12/2003 (mm/yyyy) its considered a 2004.
 

1955moose

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This is why I told him to rebuild his old one. All it takes is one thing different and zappo! He would litterealy have to take apart new, and old ones and compare everything. Why does Ford do this crap. I can understand changing from year to year for improvement, but twice in same year. I used to deal with this working on Honda motorcycles in the early to mid 70's. Had to bring Vin # Everytime I bought parts for customers bikes. A real pain, when you were buying parts for 3 or more bikes at a time.

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1955moose

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The younger generation live, on their iPhones and computers to watch useless drivel, but when we try to help them fix their SUVs they can't be bothered. I've said it before, it's flat out rude. I blame it on the parents. See what happens when you can no longer spank your child. They have no respect. No consequences, ooh take away their video games. When I messed up as a child, I couldn't sit to play my video games! Actually it was the Tv, but you get it.

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stamp11127

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I take exception to the drivel comment. YouTube has plenty of educational videos - Idiots At Work, Idiot Truck Drivers, Car Crashes In America, Active Self Protection, plus many more including the crazy Russian drivers......
 

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