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7.3L IDI (Non-Powerstroke) Diesels Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

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post #1 of 4 Old 11-08-2008, 01:51 PM Thread Starter Rookie
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New Here and Have questions

I just picked up a rust free 88 idi 4x4, but it has some problems. Before I bought it I was told the trans was bad, but if you shift from drive (doesn't move) back to park. The trans makes a grinding or ratcheting sound. What could this be? could something be broke in the transfer case? The guy I bought it from said that overdrive was out of the trans, but I have never heard of one of these trucks with an overdrive auto.

sorry if that was longwinded but I really want this truck on the road.
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post #2 of 4 Old 11-08-2008, 01:54 PM
Other vehicle is an F250
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Welcome to the org.! Be patient and I bet a tech will be along soon to help you.

2001 F250 Lariat Crewcab, Automatic, 4X4

(Late '99 Regular Cab Work Truck)

6.5" Pro Comp Lift ~ Traction Bars ~ Son-Built Sliders ~ 16" Pro Comp Xtreme Wheels with 35" BFG TA KM2s
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Stage 1 Injectors ~ HankDaddy Mod. ~ BUILT TRANNY! 352 HP Shootin' for 375!
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post #3 of 4 Old 11-08-2008, 02:05 PM
Emergency Services
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You could have broken the gears that control drive and reverse, i did it once. sucks. or maybe a bad TC

On vacation from a truck for a year or...
Looking at 6.4s Moving in a few months then hopefully buying my dream truck!!!

Driving an Audi till then...
but at work I drive
16 E-450s 7.3 powerstroke Ambulances
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post #4 of 4 Old 11-09-2008, 06:05 PM
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I have a 91 idi that has an overdrive transmission. It depends cause i believe that they come with a three speed auto or a four speed (overdrive), it sounds to me like there is a broken belt in the transmission allowing the shaft to spin freely, and when you put it in park it grabs and grinds the gear. smell your tranny fluid and see if it smells burnt, drain the tranny fluid and pull the filter and see if there is any metal shavings in it.

1991 Ford F250 Lariat
Ext. cab. Long Bed
81k original miles
True dual exhaust
Pump advanced
Sittin on 33's
7.3 IDI

1996 Ford Probe GT-ZE
2.5 24v DOHC V6
2800lb car+225hp=:burnout
True CAI
Magnaflow Cat Back Exhaust
2 10" Kenwood Excelon Subs
1800w Kenwood Mono Amp
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