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

T56 vss to ecu ??

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Old Oct 19, 2015 | 01:16 PM
  #1  
Jackrabbit501's Avatar
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Car: 1986 Camaro
Engine: 355 tpi
Transmission: 700r4
Axle/Gears: 3.73
T56 vss to ecu ??

Hey guys, I did a t56 swap from an original 700r4 in my 86 camaro. I'm trying to figure oUT how to get the vss signal to the ecu. The car idles pretty good, but once it's under load and moving it starts sputtering and backfiring. I think it has to do with the vss? Anyways I got an abbot cable x box from a member on here, does the box convert the signal to the correct signal for the ecu? Or do I need a different converter for that? Also I don't really know how to wire the thing, it has the 3 wires but the vss on the tranny only has 2?

If someone could shed some light for me it would be much appreciated
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Old Oct 19, 2015 | 05:34 PM
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jmd
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From: Aridzona
Car: `86 SS / `87 SS
Engine: L69 w/ TPI on top / 305 4bbl
Transmission: `95 T56 \ `88 200-4R
Re: T56 vss to ecu ??

Cable speedometer third gens have a VSS built into the back of the speedometer. This signal is fed to the ECM. So if you use the Cable X to spin the speedo, and assuming your car has a stock speedo / wiring, you'd be all set then.
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Old Oct 20, 2015 | 03:28 PM
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From: pawtucket RI
Car: 1986 iroc
Engine: alum. head 350 supercharged
Transmission: 6speed
Axle/Gears: ford 9in 3.90 35 spline moser axles
Re: T56 vss to ecu ??

cable x is pretty simple to wire you just have to find out in that booklet they send how many revolutions you'll be spinning with your wheel/tire combo and approximate that and just have a cable made for the box to your speedo i put mine under my front pass seat
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Old Oct 21, 2015 | 12:12 PM
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Jackrabbit501's Avatar
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Car: 1986 Camaro
Engine: 355 tpi
Transmission: 700r4
Axle/Gears: 3.73
Re: T56 vss to ecu ??

I did not know that, awesome thanks for the help

Originally Posted by jmd
Cable speedometer third gens have a VSS built into the back of the speedometer. This signal is fed to the ECM. So if you use the Cable X to spin the speedo, and assuming your car has a stock speedo / wiring, you'd be all set then.
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