Whats the difference between the different year 7.3's? thanks - Diesel Forum - TheDieselStop.com
'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 16 (permalink) Old 05-02-2005, 09:38 PM Thread Starter
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Whats the difference between the different year 7.3's? thanks

im looking at 1999 - 2002 model 7.3 diesel, not sure if there was a 7.3 in 2003. Looking at f250's with 4 doors and short box.

Was there any differences in the engine components in these different years? I got a dodge 3500 now, and was looking for a 2nd diesel for the rest of the family to play with [img]/ubbthreads/images/graemlins/smile.gif[/img]

anyways, did anything change in these years? like different parts were used to make the engine last longer?

Something of that sort, im sure you get the idea.

Also, other than the glowplugs (which I hear are a chronic problem but cheap to replace) whats the major weakpoint in these engines, something im going to end up replacing a bit?

Thanks guys [img]/ubbthreads/images/graemlins/smile.gif[/img] appreciate the info.

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post #2 of 16 (permalink) Old 05-03-2005, 06:27 AM
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Re: Whats the difference between the different year 7.3's? thanks

From year to year they didnt make major changes.. From the EARLY 99s to the 99.5s there were some under hood changes..no major engine component changes. See here for differences Then sometime in the 2002 I think,, not sure. They went from Forged rods to PMR..(Powdered metal rods) Not an issue to be concerned with, unless your going to upgrade the HP substantialy I dont believe.
I am sure someone will chime in with the exact date on the rod change,,,,if your concerned with it.

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post #3 of 16 (permalink) Old 05-03-2005, 10:03 AM
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Re: Whats the difference between the different year 7.3's? thanks

Yes, they built 2003 7.3L PowerStroke diesels (PSDs) from July into November of 2002, so there are a lot of 2003 7.3Ls on the road.

No significant difference between '99 and '03. The "early '99s" assembled in 1998 were a bit different, and those differences are spelled out in the '99-up FAQ. And Ford changed the PCM (computer) calibration a bit for 2001 models to increase HP from 235 on the older models to 250 on the automatics. The "early" 2001 hand shakers stayed with 235 HP until October, 2000, when Ford began installing 275 HP on the hand shakers.

Some folks don't like catyltic convertors. The early '99's have a cat. The 2001 and later PSDs with stick shift and 275 HP have a cat. None of the other '99.5-up 7.3Ls had a cat.

And yeah, the PMR rods might be a consideration only if you plan to hot-rod the engine to a very high power level.





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My Sierra Blanca (Spanish for White Mountain) in the sig pic was a great pickup for 11.5 years. I sold it several years ago. I drove a hand-me-down 2003 F-150 SuperCrew 4.6L 2V for a while, but it was unacceptable for towing more than a rowboat. Replacement is a 2012 F-150 EcoBoost SuperCrew Lariat that tows my 5,000-pound TT like a dream. Replaced the 2012 with a 2019 F-150 3.5L EcoBoost with max tow.
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post #4 of 16 (permalink) Old 05-03-2005, 10:49 AM Thread Starter
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Re: Whats the difference between the different year 7.3's? thanks

alright thanks for the information.

but umm what of the faults [img]/ubbthreads/images/graemlins/smile.gif[/img] there has to be more than just glowplugs [img]/ubbthreads/images/graemlins/smile.gif[/img]

the cummins got pump problems... consistently, whats the ford got in problems [img]/ubbthreads/images/graemlins/smile.gif[/img]

want to know so i can figure how much it may cost me over time.

So I says to the guy,
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post #5 of 16 (permalink) Old 05-03-2005, 11:29 AM
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Re: Whats the difference between the different year 7.3's? thanks

Mine has 133,000 milews on it, with excellent reliability.

I had to replace the pinion seal at about 67,000 miles. My PCM (computer) went south at 123,000 miles. My front brake pads lasted about 90,000 miles before one broke. My rear brake pads lasted 123,000 miles before one broke. My limited slip rear axle wasn't working too good, so the dealer fixed it under warranty. Other than that, just routine maintenance required.

Some folks say the camshaft position sensor (CPS) is a problem child (so they keep one in the glove box - just in case). Others have problem with brake rotors warping. But my CPS is still going strong, and brake rotor warpage is almost always the owner's fault for not properly torqueing the lugnuts.

One other difference in the models: Ford added an oil-to-water tranny cooler in the bottom of the radiator about mid-way through the 2000 model year. So if you buy one with automatic tranny that has only the oil-to-air tranny cooler and plan to tow with it, then you'll probably need to add more tranny cooling capacity. (I had the 2001 radiator installed in mine to add the oil-to-water tranny cooler.)

The big weakness in the truck is the automatic tranny. It will hold up fine if you never let it get too hot. But too much heat will kill it in a heartbeat. So you must have a good aftermarket tranny temp gauge and drive by that gauge. If it gets near the redline of 225 then stop and let it cool off - and change the ATF to synthetic and plan to install more tranny cooling capacity.

At 112,000 mostly-towing miles, I got tired of worrying about my tranny so I had it bullet proofed. $3,750 total out the door, but no more worries. [img]/ubbthreads/images/graemlins/warmsmile.gif[/img]



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post #6 of 16 (permalink) Old 05-03-2005, 09:23 PM Thread Starter
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Re: Whats the difference between the different year 7.3's? thanks

thanks guys appreciate the information!

seriously appreciate the information you got for me!

ill probably be buying one in the next month or so, so you might see some more posts out of me by then :L)

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post #7 of 16 (permalink) Old 11-06-2019, 10:34 AM
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More Detailed Question - 2000 vs 2003 7.3 PSD

I recently purchased a 2000 F250. In the recent past I owned a 2003 5.0, 2WD, etc... The point is that I have the factory service manuals for the 2003. I'm mainly concerned with plumbing and accessories on the engine than detail differences in the rods, etc.

From the discussion in this thread it appears that I should be able to work with the 2003 manuals for the time being. I plan on getting a set of 2000 manuals when I sell my 1999 F250 but that might be a month or more.

A quick thumbs up or an explanation of minor "exterior" engine differences would be helpful.

Thanks guys!
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post #8 of 16 (permalink) Old 11-06-2019, 11:10 AM
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Its less about engine differences and more about the control systems. The 02-03 models use more integrated controls. For example, the 2000 has a starter solenoid hanging on the left fender. Same design Ford used since the 50s. The 02-03 have a starter relay in the fuse box. The 02-03 has a module that controls most of the body functions - the VSM (vehicle security module). The 2000 has a GEM - general electric module. There are a lot more differences between the early 99s and the 99.5-01 models, but the differnces between the 02-03s and the 99.5-01 are electrical.
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post #9 of 16 (permalink) Old 11-06-2019, 03:52 PM
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2003 5.0 ?

Aren’t the service manuals pretty unique when it comes to the “...plumbing and accessories on the engine...” of a 5.0 gasser vs 7.3 diesel?


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2002 F-250 4x4 CC SB 7.3 PSD w/4R100. 182,000 miles.
NOS Black CPS. ScanGauge-II, AIC, Bilstein 5100, Stancor GPR, Marinco Mod, B&W Turnover Ball, Michelin Defender LTX


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2002 F-250 4x4 SC LB 7.3 PSD w/ZF-6. 177,000 miles.
NOS Black CPS. ScanGauge-II. Bilstein 5100. Stancor GPR. Walker BTM. Noco Mod. Michelin Defender LTX 285/75/16.

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2000 F-250 4x4 SC SB 7.3 PSD w/4R100. 164,000 miles.
NOS Black CPS. Rebuilt Fuel bowl w/gold spring, 6.0 Cooler, Walker BTM, Stancor GPR, Michelin LTX M&S2.

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post #10 of 16 (permalink) Old 11-06-2019, 03:57 PM
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Quote:
Originally Posted by RT View Post
Its less about engine differences and more about the control systems. The 02-03 models use more integrated controls. For example, the 2000 has a starter solenoid hanging on the left fender. Same design Ford used since the 50s. The 02-03 have a starter relay in the fuse box. The 02-03 has a module that controls most of the body functions - the VSM (vehicle security module). The 2000 has a GSM - general electric module. There are a lot more differences between the early 99s and the 99.5-01 models, but the differnces between the 02-03s and the 99.5-01 are electrical.
Thank you RT. I'll continue my search for the correct FSM's.

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post #11 of 16 (permalink) Old Yesterday, 12:12 AM
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2003 5.0 ?

Aren’t the service manuals pretty unique when it comes to the “...plumbing and accessories on the engine...” of a 5.0 gasser vs 7.3 diesel?
No. The base manual is a two volume set listing all the drivetrain options, including all engine options, in volume 2 (2003). So that manual covers everything about the 7.3 PSD and all the other engines.

And since I'm on the subject, the 1992 manual set I have has a specific manual for the engine. I can't say if there's a second manual for the PSD, but the engine manual I have is applicable only to gas engines.

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post #12 of 16 (permalink) Old Yesterday, 08:12 AM
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Sounds like a very comprehensive manual.


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2002 F-250 4x4 CC SB 7.3 PSD w/4R100. 182,000 miles.
NOS Black CPS. ScanGauge-II, AIC, Bilstein 5100, Stancor GPR, Marinco Mod, B&W Turnover Ball, Michelin Defender LTX


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2002 F-250 4x4 SC LB 7.3 PSD w/ZF-6. 177,000 miles.
NOS Black CPS. ScanGauge-II. Bilstein 5100. Stancor GPR. Walker BTM. Noco Mod. Michelin Defender LTX 285/75/16.

SOLD:
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2000 F-250 4x4 SC SB 7.3 PSD w/4R100. 164,000 miles.
NOS Black CPS. Rebuilt Fuel bowl w/gold spring, 6.0 Cooler, Walker BTM, Stancor GPR, Michelin LTX M&S2.
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post #13 of 16 (permalink) Old Yesterday, 11:24 AM
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And since I'm on the subject, the 1992 manual set I have has a specific manual for the engine. I can't say if there's a second manual for the PSD, but the engine manual I have is applicable only to gas engines.
Unlikely given the first PowerStroke hit the market in 99...

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 #14 of 16 (permalink) Old Yesterday, 12:04 PM
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Unlikely given the first PowerStroke hit the market in 99...
Uh, you forgot about the OBS trucks with PowerStrokes. First one in 94.

First truck -- 1929 Model A Ford pickup, restored from ground up. Wish I still had it!
'99.5 F250 PSD Supercab LB 4x4, ZF-6 w/SB Con OFE, 3.73LS, Boost & pyro gauges, Swamps S175/146 injectors, DP 80 HP Econo PCM (classic version
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), AIS,
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post #15 of 16 (permalink) Old Yesterday, 12:11 PM
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Quote:
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Quote:
Originally Posted by RT View Post
Unlikely given the first PowerStroke hit the market in 99...
Uh, you forgot about the OBS trucks with PowerStrokes. First one in 94.

Now I know how the IDI guys felt. You can't forget about us bottom dwellers

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