VSS input for 7730 ECM
02-09-2010, 09:47 AM
#1
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Car: 91 TPI Caprice
Transmission: TH700R4
VSS input for 7730 ECM
a short question: at the 1227730 ECM with 8D (running a TPI) I usually have the VSS directly connected to the ECM, and the ECM supplies the output signal for the speedo (basically the ECM has the function of former VSS Buffers)
Now i have a 89 Van with mechanical speedo and a speed-sensor attached to the speedo, which supplies a brown speed output wire to this Van's factory TBI-ECM.
Is there a way to use this signal at the TPI-ECM? it would safe me a lot of time because otherwise I would have to get a new VSS.
Now i have a 89 Van with mechanical speedo and a speed-sensor attached to the speedo, which supplies a brown speed output wire to this Van's factory TBI-ECM.
Is there a way to use this signal at the TPI-ECM? it would safe me a lot of time because otherwise I would have to get a new VSS.
02-09-2010, 10:57 AM
#2
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Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
Re: VSS input for 7730 ECM
They used that computer in different applications with an optical sensor.
Connect that brown wire to C6 on the computer. and disregard the B9&B10
Connect that brown wire to C6 on the computer. and disregard the B9&B10
02-09-2010, 08:52 PM
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Car: 86 Monte SS (730,$8D,G3,AP,4K,S_V4)
Engine: 406 Hyd Roller 236/242
Transmission: 700R4 HomeBrew, 2.4K stall
Axle/Gears: 3:73 Posi, 7.5 Soon to break
Re: VSS input for 7730 ECM
That will work but you must be able to reprogram the chip.
Option word 3 at $8018, bit 6 must be cleared to enable to optical input.
Option word 3 at $8018, bit 6 must be cleared to enable to optical input.
02-10-2010, 01:33 AM
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Car: 91 TPI Caprice
Transmission: TH700R4
Re: VSS input for 7730 ECM
thank you guys, that's great
I'm using Tunercat for programming, can this option be set there too?
I'm using Tunercat for programming, can this option be set there too?
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