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Transmissions and Drivetrain Need help with your trans? Problems with your axle?

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Old 09-02-2009, 06:42 PM   #1
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Join Date: Jun 2009
Location: new jersey
Posts: 21
Car: 1989 Firebird
Engine: 305
Transmission: 700r4 w/ kit

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700r4 sensor/plug? what is it

i just swapped 700r4 and there is a plug with two prongs on my old one. it is located in the rear of the tranny, driverside, near the torque arm. the 700r4 that i replaced it with does not have a plug, it has a small threaded shaft on it in the exact spot. i have no idea what either of these are for... and the plug from the old tranny does not fit the new one. any ideas???

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Old 09-02-2009, 11:50 PM   #2
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Join Date: Jul 2006
Location: Stamford, CT
Posts: 52
Car: 1987 IROC-Z Clone
Engine: 350 Vortec (Head-work By AFR)
Transmission: 700R4 (Rebuilt - all PATC goodies)
Axle/Gears: BW 3.70:1 (Auburn, Moser, TA Perf)

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Re: 700r4 sensor/plug? what is it

The electrical terminal on you old transmission is for your vehicle speed sensor to operate your electrical speedometer...

The threaded connector on your new transmission is for a speedometer cable to operate a mechanical speedometer
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Old 09-03-2009, 10:05 AM   #3
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Location: new jersey
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Car: 1989 Firebird
Engine: 305
Transmission: 700r4 w/ kit

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Re: 700r4 sensor/plug? what is it

so im guessing that if i dont have that connected my speedo wont work?
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Old 09-03-2009, 10:48 AM   #4
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Join Date: Aug 1999
Location: Lawrence, KS
Posts: 16,248
Car: Met. Silver 85 IROC
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's

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Re: 700r4 sensor/plug? what is it

Quote:
Originally Posted by NJrFirebird View Post
so im guessing that if i dont have that connected my speedo wont work?
No, the speedo won't function. In a T-5 the two connections, VSS and sleeve, are interchangeable. This 'may' be the case with a 700R4. Try the swap and see.

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Old 09-03-2009, 10:48 AM
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700r4, connection, connections, electrical, eletrical, plug, plugs, pulg, sensor, speed, speedometer, speedos, transmission, wire, work
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