quick question about wires - Ford Powerstroke Diesel Forum

 
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post #1 of 5 Old 03-16-2012, 06:14 PM Thread Starter
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quick question about wires

i have an '03 7.3 f350 and i'm doing a little troubleshooting to try and figure out some intermittent cold start/no start issues

on the glow plug relay there is a brown wire and a yellow wire on the load side... does the yellow wire do the bank of glow plugs on one side of the engine and the brown wire does the other side?

it all seems to be working fine and all glow plugs seem to be working fine as long as that is how the wiring goes. i metered out the wires with my clamp on dc ammeter, the yellow and brown are each drawing a little over 50 amps with the key on ignition on and the engine cold.

other question is how long should the glow plugs be on because they are definitely drawing current much longer than the glow plug light on the dash stays on, even while the engine is running.
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post #2 of 5 Old 03-16-2012, 06:19 PM
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The relay will run allot longer than the light. Like 3 minutes I think? Can't help you with your wireing but someone on here will. And welcome to the forum!

2003 7.3 4-door Long Bed DRW
American Force 22" Classics on 33X12.5X22
Irate Diesel Competion fuel system
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Too many Recon lights to list..
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post #3 of 5 Old 03-16-2012, 06:47 PM
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My wire diagrams show the Brown wire goes to the odd cylinders, and the yellow wire to the even cylinders.

Best of luck

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post #4 of 5 Old 03-16-2012, 07:06 PM
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Look here. Alot of good info...

Stancor Relay Mod!!

2003 7.3 4-door Long Bed DRW
American Force 22" Classics on 33X12.5X22
Irate Diesel Competion fuel system
Rancho RS9000XL Shocks
PHP Custom tunes
Foil Delete
ZooDad Mod
aFe Stage 2 XP CAI
MBRP 4" Turbo back S.S Dual Exuast
Edge Insight CTS
Stancor GPR
Directed Smart Start
Kenwood Dnx 7160 W/Kicker L-7
Too many Recon lights to list..
07 H.D Front End Conversion W/ HID's
08 Tail-Gate
Roll Pan
S366 t4 mount
SRP 1.2
250/200's

Last edited by xraypipeliner; 03-16-2012 at 07:09 PM.
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post #5 of 5 Old 03-16-2012, 08:59 PM Thread Starter
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thanks for the help guys, answered all of my questions. 50 amps per wire would be about right then... that would average out the glow plugs at about 1 ohm each.

i've been reading that some people have no start problems with the fuel tank down around 1/4 tank or less. i've been having starting problems but filled it up the other day and no more problems... which makes it tough to troubleshoot

here is a video from a few days ago

i don't drive this truck at all, just bought it to haul stuff around. the most major use i've had out of it was to haul my tacoma out of the bush on a car trailer after a major jump.
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