new member looking for 2003 Excursion wiring diagram - Ford Powerstroke Diesel Forum
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post #1 of 10 Old 06-11-2019, 06:32 PM Thread Starter
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new member looking for 2003 Excursion wiring diagram

Hello all, I found this site while looking for info on my Excursion, hopefully someone can point me in the right direction. Desperately in need of a good quality wiring diagram that I beg, borrow, steal, or purchase somewhere. Lost the ground connection to the starter relay and AC compressor clutch relay at the same time. I can remove the relays and jump to make truck start and run cool, but problem is also effecting transmission shifting (tow/haul light blinking) occasionally, even when no current codes wont shift into low. Also intermittently, no matter how much throttle, severe lack of power, wont go over 2300 rpm down hill. To make matters worse this has taken out the diagnostic port, so what codes are set, I have no clue. Previous only code was for EGR which was on the schedule to do before this happened. Everything was working good until that one moment when I hit the key and she wouldn't crank. Snap!

Pulled the fuse block under dash and under hood, checked for corrosion, loose terminals, all good. Looked for ground connection at body for loose, corroded or broken and haven't found the culprit yet.
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post #2 of 10 Old 06-11-2019, 08:14 PM
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When in doubt ask the librarian.

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2005 F250 CCSB KR 4x4 6.0 4" Flo-Pro,
Fox 2.0s, Toyo ATs, CTS2 Pro, Blue Spring, BPD 7.3 Fan Clutch, IPR Coolant Filter

2000 F350 SCLB Dually 4x4, 7.3 6 Speed Hydra, CTS2, S&B Air, 4'' SS Diamond Eye

2005 Explorer XLT 4x4 Mountaineer,
Toyo ATs, Wife's grocery getter

1993 F150 4x4, 302 5 speed, winter truck

1991 F350 4x4, 7.3 IDI Flatbed, 5 speed...sold

2008 F250 SCLB 6.4...Sold


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post #3 of 10 Old 06-11-2019, 08:16 PM
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Oh yeah, welcome to the funny farm, I mean Org

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2005 F250 CCSB KR 4x4 6.0 4" Flo-Pro,
Fox 2.0s, Toyo ATs, CTS2 Pro, Blue Spring, BPD 7.3 Fan Clutch, IPR Coolant Filter

2000 F350 SCLB Dually 4x4, 7.3 6 Speed Hydra, CTS2, S&B Air, 4'' SS Diamond Eye

2005 Explorer XLT 4x4 Mountaineer,
Toyo ATs, Wife's grocery getter

1993 F150 4x4, 302 5 speed, winter truck

1991 F350 4x4, 7.3 IDI Flatbed, 5 speed...sold

2008 F250 SCLB 6.4...Sold


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post #4 of 10 Old 06-12-2019, 03:03 AM
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Welcome. Is this '03 Ex a 7.3 or 6.0?

2004 F550 CC Lariat
BPD oil cooler relocation and upgraded EGR cooler (spooled), BPD oil bypass filtration, aFe Magnum Force CAI, Mishi radiator, 7.3L fan clutch, EC1 ELC, XDP coolant bypass filtration, '08 trans pan/filter, PTP direct clutch solenoid, blue spring, 6.4 starter, MBRP y-pipe, BD boots/clamps, '05 intake elbow, ccv reroute, Torque Pro + OBDLinkô LX, Autometer EGT
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post #5 of 10 Old 06-12-2019, 06:54 AM
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Quote:
Originally Posted by djmaguire View Post
Welcome. Is this '03 Ex a 7.3 or 6.0?
He mentioned an EGR in his first post, guessing a 6.0
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Sparky
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2005 F250 CCSB KR 4x4 6.0 4" Flo-Pro,
Fox 2.0s, Toyo ATs, CTS2 Pro, Blue Spring, BPD 7.3 Fan Clutch, IPR Coolant Filter

2000 F350 SCLB Dually 4x4, 7.3 6 Speed Hydra, CTS2, S&B Air, 4'' SS Diamond Eye

2005 Explorer XLT 4x4 Mountaineer,
Toyo ATs, Wife's grocery getter

1993 F150 4x4, 302 5 speed, winter truck

1991 F350 4x4, 7.3 IDI Flatbed, 5 speed...sold

2008 F250 SCLB 6.4...Sold


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post #6 of 10 Old 06-12-2019, 07:03 AM
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Quote:
Originally Posted by SparkyF250 View Post
He mentioned an EGR in his first post, guessing a 6.0
Ah, yes. Thank you.

Here are two places to go:

https://www.powerstroke.org/forum/ge...2004-ymmv.html

https://www.powerstroke.org/forum/ge...gram-pdfs.html
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2004 F550 CC Lariat
BPD oil cooler relocation and upgraded EGR cooler (spooled), BPD oil bypass filtration, aFe Magnum Force CAI, Mishi radiator, 7.3L fan clutch, EC1 ELC, XDP coolant bypass filtration, '08 trans pan/filter, PTP direct clutch solenoid, blue spring, 6.4 starter, MBRP y-pipe, BD boots/clamps, '05 intake elbow, ccv reroute, Torque Pro + OBDLinkô LX, Autometer EGT
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post #7 of 10 Old 06-12-2019, 08:45 AM
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Quote:
Originally Posted by djmaguire View Post
You're the man! Ignore the Engineer bashing in the hood cracked thread.
https://www.powerstroke.org/forum/6-...d-fatigue.html
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Sparky
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2005 F250 CCSB KR 4x4 6.0 4" Flo-Pro,
Fox 2.0s, Toyo ATs, CTS2 Pro, Blue Spring, BPD 7.3 Fan Clutch, IPR Coolant Filter

2000 F350 SCLB Dually 4x4, 7.3 6 Speed Hydra, CTS2, S&B Air, 4'' SS Diamond Eye

2005 Explorer XLT 4x4 Mountaineer,
Toyo ATs, Wife's grocery getter

1993 F150 4x4, 302 5 speed, winter truck

1991 F350 4x4, 7.3 IDI Flatbed, 5 speed...sold

2008 F250 SCLB 6.4...Sold


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post #8 of 10 Old 06-12-2019, 05:35 PM Thread Starter
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Thank you for the help!
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post #9 of 10 Old 06-12-2019, 07:23 PM
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Originally Posted by Chris Hill View Post
Thank you for the help!
That's why we're here, help and entertainment.

Sparky
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2005 F250 CCSB KR 4x4 6.0 4" Flo-Pro,
Fox 2.0s, Toyo ATs, CTS2 Pro, Blue Spring, BPD 7.3 Fan Clutch, IPR Coolant Filter

2000 F350 SCLB Dually 4x4, 7.3 6 Speed Hydra, CTS2, S&B Air, 4'' SS Diamond Eye

2005 Explorer XLT 4x4 Mountaineer,
Toyo ATs, Wife's grocery getter

1993 F150 4x4, 302 5 speed, winter truck

1991 F350 4x4, 7.3 IDI Flatbed, 5 speed...sold

2008 F250 SCLB 6.4...Sold


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post #10 of 10 Old 06-12-2019, 08:46 PM
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the BEST wiring diagrams are in the Ford official book for your year. My 2002 book covers excursion and superduty, gas and 7.3 powerstroke, and all package variations.

I got mine off amazon, I think? no, ebay.....

ah, here's the 2003. its a 650 page book(!)

https://www.ebay.com/itm/2003-Ford-E...s/152888842728
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2002 F250 Super Cab XLT longbed, white. stock except stereo and shell.

....old enough to know better....
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