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Connectors near ECM Unplugged, VSS, Speedo

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Old 09-30-2007, 12:29 PM
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Car: 89 Firebird Formula
Engine: 305 Vortec, Single-plane, 4 barrel
Transmission: T5, soon 700R4
Axle/Gears: 88 10 Bolt, Disc, Auburn, 3.23
Connectors near ECM Unplugged, VSS, Speedo

89 Formula 305 TPI

I have been troubleshooting my speedo/VSS, neither has power.

Near the ECM, from the wiring harness there is a two pin connector for the VSS and a multipin connector which has the speedo wire in it.

Both are unplugged and I do not see a way to plug them into the ECM/ ECM harness, is there a module/connector I am missing??


Two connectors at top of image.

-Dave

Last edited by PV9685; 09-30-2007 at 01:41 PM. Reason: add pic
Old 09-30-2007, 01:50 PM
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Re: Connectors near ECM Unplugged, VSS, Speedo

Looks like you're missing a DRAC module. This converts the 4x signal from the magnetic VSS to a 2x signal that the ECM can use.
Old 09-30-2007, 06:02 PM
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Car: 89 Firebird Formula
Engine: 305 Vortec, Single-plane, 4 barrel
Transmission: T5, soon 700R4
Axle/Gears: 88 10 Bolt, Disc, Auburn, 3.23
Re: Connectors near ECM Unplugged, VSS, Speedo

Thank You SOOOO Much!!!

You're the man!

-Dave
Old 09-30-2007, 09:52 PM
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Car: 89 Firebird Formula
Engine: 305 Vortec, Single-plane, 4 barrel
Transmission: T5, soon 700R4
Axle/Gears: 88 10 Bolt, Disc, Auburn, 3.23
Re: Connectors near ECM Unplugged, VSS, Speedo

Actually, does anyone know if these modules differed between transmissions/engines/gear ratios etc?

Because it looks like I'll be hunting in the junkyard.

Thanks,
Dave
Old 10-01-2007, 07:40 AM
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Re: Connectors near ECM Unplugged, VSS, Speedo

P/M Sent !


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