Speedometer help please - Diesel Forum - TheDieselStop.com
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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post #1 of 13 (permalink) Old 11-19-2012, 04:56 PM Thread Starter
MHG
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Speedometer help please

We re working on a '91 4X4 w/ E4OD and a B-W transfer case. Both the speedometer drive gear and driven gear need to be replaced. The vendor mentioned in a thread here is out of stock on the drive gear, yellow 7 tooth. Anybody have a source? Is it available from Ford, if so part number? Thanks in advance. MHG
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post #2 of 13 (permalink) Old 11-19-2012, 05:27 PM
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I thought the E4OD equipped vehicles used the VSS in the rear differential.

1994 F-350 7.3 IDI Turbo, crew cab, E4OD,4:10 L/S, LB, Dually Photos
ATS Turbo upgrades: 3" DP with 3" exhaust Magnaflow XL muffler: Pictures Here
2012 Copper Canyon 273 FWRET w/2 slides, Air Lift 5000 bags
Pillar pod: Autometer C2 Series gauges: pyro,trans, boost, water, oil pressure
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post #3 of 13 (permalink) Old 11-20-2012, 01:45 AM
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That might be 1992+, I don't have the right book to prove one way or the other.

1992 F250 XLT 4x4 Super Cab 7.3 IDI E40D 3.55 ATS 088 4"R.C 360k
1982 MBZ 300SD W126 California model w/Sunroof, no EGR
1997 Audi A8 Quattro 225k Warm/Cold packages
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post #4 of 13 (permalink) Old 11-20-2012, 08:28 AM Thread Starter
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This '91 has one on the rear end and one on the transfer case
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post #5 of 13 (permalink) Old 11-20-2012, 09:16 AM
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Have you tried LMC, Rock Auto, and maybe 4Wheel Off Road.

1994 F-350 7.3 IDI Turbo, crew cab, E4OD,4:10 L/S, LB, Dually Photos
ATS Turbo upgrades: 3" DP with 3" exhaust Magnaflow XL muffler: Pictures Here
2012 Copper Canyon 273 FWRET w/2 slides, Air Lift 5000 bags
Pillar pod: Autometer C2 Series gauges: pyro,trans, boost, water, oil pressure
Hypermax Cowl induction, K&N air filter, flex-a-lite 26K trans cooler with fan,Tekonsha prodigy
Train Horns: Pictures here

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post #6 of 13 (permalink) Old 11-20-2012, 09:49 AM
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I wonder if they send the same signal

1992 F250 XLT 4x4 Super Cab 7.3 IDI E40D 3.55 ATS 088 4"R.C 360k
1982 MBZ 300SD W126 California model w/Sunroof, no EGR
1997 Audi A8 Quattro 225k Warm/Cold packages
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post #7 of 13 (permalink) Old 11-20-2012, 09:54 AM
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If I had to guess, I would bet the VSS in the rear end is electrical and signals the TCM for shifting, and the transfer case VSS is cable driven for the speedo/ODO.

1994 F-350 7.3 IDI Turbo, crew cab, E4OD,4:10 L/S, LB, Dually Photos
ATS Turbo upgrades: 3" DP with 3" exhaust Magnaflow XL muffler: Pictures Here
2012 Copper Canyon 273 FWRET w/2 slides, Air Lift 5000 bags
Pillar pod: Autometer C2 Series gauges: pyro,trans, boost, water, oil pressure
Hypermax Cowl induction, K&N air filter, flex-a-lite 26K trans cooler with fan,Tekonsha prodigy
Train Horns: Pictures here

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post #8 of 13 (permalink) Old 11-20-2012, 10:08 AM
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Probably true. I wonder if one could upgrade to a 1992+ cluster. I imagine it wouldn't fit without heavy modification anyway.

1992 F250 XLT 4x4 Super Cab 7.3 IDI E40D 3.55 ATS 088 4"R.C 360k
1982 MBZ 300SD W126 California model w/Sunroof, no EGR
1997 Audi A8 Quattro 225k Warm/Cold packages
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post #9 of 13 (permalink) Old 11-20-2012, 10:21 AM
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Quote:
Originally Posted by chuckster57 View Post
If I had to guess, I would bet the VSS in the rear end is electrical and signals the TCM for shifting, and the transfer case VSS is cable driven for the speedo/ODO.
Yep, unless the auto trans has a bearing on it, my '91 (5 spd) speedo is 100% old-time cable driven with the gear driven odometer. The diff sensor is for the ABS system. In '92 they switched to the digital mileage display.

Heavy truck and diesel mechanic (thankfully retired after 30+ yrs)
'91 F-250 SC 4X4, 5spd. ATS Turbo, 3:55 diff.

Last edited by LMJD; 11-20-2012 at 10:24 AM.
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post #10 of 13 (permalink) Old 11-20-2012, 10:39 AM
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Thanks for clearing that up.

1994 F-350 7.3 IDI Turbo, crew cab, E4OD,4:10 L/S, LB, Dually Photos
ATS Turbo upgrades: 3" DP with 3" exhaust Magnaflow XL muffler: Pictures Here
2012 Copper Canyon 273 FWRET w/2 slides, Air Lift 5000 bags
Pillar pod: Autometer C2 Series gauges: pyro,trans, boost, water, oil pressure
Hypermax Cowl induction, K&N air filter, flex-a-lite 26K trans cooler with fan,Tekonsha prodigy
Train Horns: Pictures here

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post #11 of 13 (permalink) Old 01-09-2014, 04:17 PM
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Quote:
Originally Posted by MHG View Post
We re working on a '91 4X4 w/ E4OD and a B-W transfer case. Both the speedometer drive gear and driven gear need to be replaced. The vendor mentioned in a thread here is out of stock on the drive gear, yellow 7 tooth. Anybody have a source? Is it available from Ford, if so part number? Thanks in advance. MHG

Is the T-Case a BW 1345?
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post #12 of 13 (permalink) Old 01-09-2014, 04:33 PM
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Quote:
Originally Posted by LMJD View Post
Yep, unless the auto trans has a bearing on it, my '91 (5 spd) speedo is 100% old-time cable driven with the gear driven odometer. The diff sensor is for the ABS system. In '92 they switched to the digital mileage display.
On my '91 the VSS seems to control the shifting. Don't know about the ABS. Having problems now.

1991 F -350 Dually extcab 2wd 7.3 IDI E4OD 145k miles and counting.
1987 F-350 4x4 6.9 C-6 rust,rot, and more rust
'97 f-350 5.8l ZF-5 dump body--my work truck
1990 MB 300D Turbo diesel
'80 Harley Wide Glide 93" S&S motor
2000 SE Roadglide
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post #13 of 13 (permalink) Old 01-09-2014, 06:18 PM
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E40D and RABS use the same VSS. It's spliced straight to both.

1992 F250 XLT 4x4 Super Cab 7.3 IDI E40D 3.55 ATS 088 4"R.C 360k
1982 MBZ 300SD W126 California model w/Sunroof, no EGR
1997 Audi A8 Quattro 225k Warm/Cold packages
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