svc from 4thgen to 3rdgen
Thread Starter
Junior Member
Joined: Sep 2005
Posts: 61
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From: south san francisco
Car: 84 camaro z28
Engine: 305 H.O.
Transmission: 5 speed
svc from 4thgen to 3rdgen
hi, i saw on the forum How to on SCV 4th gen in 3rd Gen it said find the green wire with the black stripe and connect that to the 16th pin, but on my 84 z28, 5sp, my ECM harness have no green wire with black stripe, i have attach a picture, any help would be appreciated, thank you.
Last edited by redcamz; Feb 5, 2006 at 11:08 PM.
Thread Starter
Junior Member
Joined: Sep 2005
Posts: 61
Likes: 0
From: south san francisco
Car: 84 camaro z28
Engine: 305 H.O.
Transmission: 5 speed
hi, has anybody install 4th gen delco radio into our 3rd gen and make the svc work? i can't seem to make it work, any help out there? thanks
Supreme Member
Joined: Oct 1999
Posts: 1,734
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From: Westminster, MD
Car: 89 IROC-Z
Engine: 355 TPI
Transmission: 700R4
I feel bad that no one has an answer for you, I don't know that I do.
But you need to start be checking the wiring diagram for you car and find the VSS wire to the computer. It may not be the same color in your car or localtion.
Then you need to get your ECM from out of the passenger side dash area and unplug the black connector (VSS buffer) from the yellow harness mounted on the ECM. Find the green wire with the black stripe and connect another wire (long enough to reach your radio bay) to it:
Member
Joined: Apr 2004
Posts: 278
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From: Sin City
Car: '86 IROC, '87 Volvo 240, '09 Malibu
Engine: LB9 5.0L
Transmission: 700R4
Well, this could be the problem... Is your 5-speed a T56 or just a T5? Because if it's just the original T5, then you likely don't have a vehicle speed sensor.
Thread Starter
Junior Member
Joined: Sep 2005
Posts: 61
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From: south san francisco
Car: 84 camaro z28
Engine: 305 H.O.
Transmission: 5 speed
thanks everybody for the info, my is the original t5, and if it is in the back of the speedo, which color of the 3 wire would it be, thanks for the reply.
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Supreme Member
Joined: Oct 1999
Posts: 1,734
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From: Westminster, MD
Car: 89 IROC-Z
Engine: 355 TPI
Transmission: 700R4
Originally posted by NEEDAZ
...you need to start be checking the wiring diagram for you car and find the VSS wire to the computer...
...you need to start be checking the wiring diagram for you car and find the VSS wire to the computer...
button. Try narrowing the search to the forum, and concentrate on posts by Trickster. 
Senior Member
Joined: Feb 2004
Posts: 860
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From: Albany, NY Area
Car: Red on Red 89 RS
Engine: LO3 305 TBI
Transmission: TH-700R4
Axle/Gears: 10-bolt / 2.73
pre 1990 f-bodies with a standard transmission do not have a VSS. You can purchase one and install it inline with your speedometer cable at the transmission and run the wire into the vechicle
Supreme Member
Joined: Oct 1999
Posts: 1,734
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From: Westminster, MD
Car: 89 IROC-Z
Engine: 355 TPI
Transmission: 700R4
I could be wrong, hope not, but I thought the computer still had an input from the box behind the speedo? Is that just for TCC control in the autos? Doesn’t the EGR or something have a min. speed to enable?
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