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7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

       
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Old 08-26-2008, 10:50 PM   #1 (permalink)
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1989 F 350 4x4 7.3 death Wobbbbble

89 f 350 has developed unbearable Death wobble at @40 mph. Can anybody give me the rundown on what is most likely the problem, the parts, parts cost, some quick do's and dont's .
thnks, remote
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1989 F-250 4x4 C-6 7.3
1989 F-250 4x4 C-6 7.3
1991 F-250 4x4 E-4OD 7.3
1989 F-350 4x4 5 speed manuel 7.3 (present project truck)
1989 F-350 4x4 E-4OD 7.3 (4 door) (future project)
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Old 08-27-2008, 08:50 AM   #2 (permalink)
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Check the complete front end for worn steering parts..........loose wheel bearings etc.

Cost can be up there.......depends on what you find and if your doing the repairs.

Thank your lucky stars you do NOT own a newer style Dodge 4x4 pickup....... on average the cost of front end rebuilds we see is around $2500.....
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93 F250 7.3 IDI S/C XLT 4X4 E40D 3.55LS, Captains chairs, Tutone Mocha, Leer 48" Hiboy cap, FR & RR hitches, full DeeZee running boards. Factory ordered/delivered Jan 93 has 160K+, it's basically a stock truck with all the Ford options, just no disc player.
Toys: 26'Jayco FK TT, 18'Sylvan Pro Fish.

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Old 08-27-2008, 10:07 AM   #3 (permalink)
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My 89 has the same problem so while I was having the ignition switch fixed had them look at it. Mechanic said it needed a track bar kit. $148.00 installed.
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89 C-350 Centurion 4X4 (F-350 4door Bronco), W/93 7.3L IDI non-turbo, ZF 5-Speed(LUK)/BW 1356/Dana 60/Sterling 10.25, 3.55, Hypermax Turbo/Intercooler, 3 1/2" Exhaust/Pyro(inop), RDT, 265/75R16 BFG/AT on 16X8 American Racing Wheels 130,000 and still going strong
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Old 08-28-2008, 08:10 PM   #4 (permalink)
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Adding a steering stabilizer fixed my wobble on 3 different trucks... 95 F350, and my 85 & 91 Chev 1-tons.
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95 F350 Crew 5spd/4.10, SuperChips tuner, solid flywheel, T444E waterpump, 205° stat, Locked F&R, 9.00R16 Michelin XLs
97 E350 SRW cutaway, E4OD/D70/4.10, 19.5s on the rear, deep trans pan, batteries inside, 1800W inverter, manual glowplugs
84 C30 Suburban, 6.2/4-spd, 3.21s
Other rigs I goof around with regularly:
93 F350 4x4, 7.3 IDI turbo, 5spd, 4.10s
90 F250 4x4, 7.3 IDI, 5spd, 3.55s
, D60 swap, straight pipe, turned up fuel screw
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Old 08-28-2008, 08:56 PM   #5 (permalink)
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Death wobble solved for $40.00

Death Wobble Solved for $40.00. After having wheels balanced for $20.00 at tire shop and tire shop guys look over tie rods, checking wheel bearing play etc. and find nothing really that looked bad I drove down road and unlike before the death wobble happened when I hit the brakes in addition to trraveling forward at about 35 mph. I went strait from there to lineup shop and guy pulled me on rack and looked over same tie rod ends in front of axle that tire guys did. Same opinion about wheel bearings and rod ends, but this guy noticed something that both the tire guys and I had missed. Up behind the axle is a bar with bushings that anchor on a plate with 3 bolts. This plate is in front of and above the oil pan center the truck. The 3 bolts were loose causing everthing down the line to supect when they were the cause. After tightening 3 bolts we checked toe end and it was good. $40.00 solved nightmare death wobble.
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1989 F-250 4x4 C-6 7.3
1989 F-250 4x4 C-6 7.3
1991 F-250 4x4 E-4OD 7.3
1989 F-350 4x4 5 speed manuel 7.3 (present project truck)
1989 F-350 4x4 E-4OD 7.3 (4 door) (future project)
John deere 450C Crawler
Ford 6610 4x4 Tractor
Diamond Rio Dump Truck
Chevy Dump Truck
International Semi
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Old 08-28-2008, 09:02 PM   #6 (permalink)
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Nice find and a cheap fix not all are that easy though.................
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93 F250 7.3 IDI S/C XLT 4X4 E40D 3.55LS, Captains chairs, Tutone Mocha, Leer 48" Hiboy cap, FR & RR hitches, full DeeZee running boards. Factory ordered/delivered Jan 93 has 160K+, it's basically a stock truck with all the Ford options, just no disc player.
Toys: 26'Jayco FK TT, 18'Sylvan Pro Fish.

Proud Canadian BOOB man too!!
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Old 08-28-2008, 09:45 PM   #7 (permalink)
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Forgot to say thanks to all. Thanks!!!!!!

Thanks to all!!
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1989 F-250 4x4 C-6 7.3
1989 F-250 4x4 C-6 7.3
1991 F-250 4x4 E-4OD 7.3
1989 F-350 4x4 5 speed manuel 7.3 (present project truck)
1989 F-350 4x4 E-4OD 7.3 (4 door) (future project)
John deere 450C Crawler
Ford 6610 4x4 Tractor
Diamond Rio Dump Truck
Chevy Dump Truck
International Semi
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