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'99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the '99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

 
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post #1 of 6 (permalink) Old 05-24-2019, 06:44 PM Thread Starter
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Hi all. I have 2002 f350 dually with 7.3 .I bought it new and wax her about once per month. She has been a awesome truck with no issues. Normal maintenance. Till now. I am stumped. Long story short, no throttle no gauges. On my truck that's fuse#45 but soon found out it was shifter causing problems. I changed it,and TPS,and injector relay, oh, and ECU which was $700. No change. Runs fine but no gauges or throttle. Wizards of smart camp here so please throw out an idea or 3. Oh and glad to be aboard forum.
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post #2 of 6 (permalink) Old 05-24-2019, 07:30 PM
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Welcome to the forum! The mechanics will be here shortly to help you with your problem.

2001 F350 XLT 4X4 crew cab, dual rear wheels, long bed, black, 7.3l turbo diesel, automatic transmission, 4.10, shift on the fly, running boards, sliding rear window, 38 gal fuel tank, Odyssey extreme 65-PC1750T batteries, Michelin LTX-MS2 rear tires, Sumitomo Encounter front tires, Shell Rotella Ultra elc, 11,500 gvwr, 20,000 gcwr, 7500 gvw, completely stock, 114,000 miles when purchased, now has 250,000 miles, repairs so far: two starters, batteries, cps, brakes, tires, alternator, ball joints, locking hub, wheel hub, AC compressor, serpentine belt, power steering pump, driver's side window, ignition switch, o-ring, Spectra premium radiator, water pump, fan clutch, fan blades, thermostat, thermostat housing, tensioner. Stolen twice so far, but recovered both times with major damage.

2005 Nomad Rampage toyhauler made by Skyline. 11,500lb gvwr.
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post #3 of 6 (permalink) Old 05-24-2019, 10:27 PM
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You're right - fuse 45 should be the culprit. Have you verified the new fuse is intact with a voltmeter - not just holding it up and looking at it? If so, you may have burned a connection in that circuit somewhere. You're going to have to go testing with your meter. Try cutting the circuit in half each time to try and narrow down the issue. For example, check to see that 45 is getting power. If so, you've eliminated the supply side. On the other side of the fuse, a red wire with a yellow stripe branches to feed the cluster, the throttle position sensor, the OD button, the 4WD module, and one feed to the PCM. You could check for power at a few of those and see if they are getting fed. Somewhere there is a break in the circuit.

2003 F-250 XLT Crew Cab 7.3L, Chrome BigTex Grille Guard, Quad pillar - 3 ISSPRO gauges (trans, pyro, boost) and DP-Tuner F6; Roush fuel pressure / temperature / oil pressure gauges, Ford Severe Duty AIS, 31 row 6.0 transmission cooler, ScanGauge II, Marinco mod, Walker BTM, Full Force Stage 1 injectors

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post #4 of 6 (permalink) Old 05-25-2019, 09:53 AM Thread Starter
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I discovered I have many fuses that show NO power on my meter and yet fuse tests good, and components work. Never saw that before. Is that telling me the fuse/power module is bad?
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post #5 of 6 (permalink) Old 05-26-2019, 09:21 AM
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If the components work, how can it be bad? Unless theres a short that miraculously supplies power for those components from some were else. Wow would that be odd.

2002 F350 Super Duty, Crew Cab,Long box,4x4, 7.3 PSD, Complete rebuild .010 over by myself except balancing, 2000hp billet connecting rods, ARP main and head studs, ceramic coated pistons, Smith Bros Chrome Molly push rods, Comp Cams springs, shims and seals. Competion complete valve set and head grinding and vacuum tested, Adrenaline HPOP, DP Tuner Infinity DX programmer and full load of tunes modified for my new Stage 3 250 shot injectors, ceramic coated exhaust manifolds and up pipes and collector, BD Diesel triple clutch furnace brazed billet torque converter and BD pro engine brake and compressor set up, MBRP 4" stainless turbo back, Driven Diesel regulated fuel return system, AFE pro stage 2 cool air intake, riffraff billet Whicked Wheel 2 compressor wheel in a GTP38R turbo, riffraff blue cooler boot kit and coil clamps, International Double Ceramic Coated Bellowed Up Pipes
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post #6 of 6 (permalink) Old 05-26-2019, 11:37 AM
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Did you check for power with the key on? A little unconventional, but I would try backfeeding fuse 45 with 12v+ to see if your throttle comes alive. That would verify it is a supply side issue. May be something as simple as the ignition switch.


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2003 F-250 XLT Crew Cab 7.3L, Chrome BigTex Grille Guard, Quad pillar - 3 ISSPRO gauges (trans, pyro, boost) and DP-Tuner F6; Roush fuel pressure / temperature / oil pressure gauges, Ford Severe Duty AIS, 31 row 6.0 transmission cooler, ScanGauge II, Marinco mod, Walker BTM, Full Force Stage 1 injectors

IF MY BODY IS EVER FOUND ON A JOGGING TRAIL JUST KNOW THAT I WAS MURDERED SOMEWHERE ELSE AND DUMPED THERE
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