Cruise control trouble?
Thread Starter
Senior Member
Joined: May 2012
Posts: 705
Likes: 95
From: Manitoba, Canada
Car: 1987 Z28 IROC
Engine: 6.2L
Transmission: 700R4
Axle/Gears: 3.23
Cruise control trouble?
I have a 1985 Z28 with a 1991 speed density setup from a Trans AM. When I got the car it had a carbed 350 with the fuel injection harness as well as the cruise control components removed. It still has the cruise module in the dash and the wiring/brake pedal switches.
I put the cruise control equipment back on the engine and hooked up all the wires/connections/vacuum ball, ect but it won't work.
I have tried both the 1985 and 1991 cruise modules as they seem to plug into the same connector. The only thing I can think of is that it is not getting the speed signal.
I have a painless 4k pulse vss installed on my T5 and hooked up to the B9 & B10 pins on the 1991 ECM and have the red VSS wire from C1 ran to the cruise module.
I don't know what my next step should be.
I put the cruise control equipment back on the engine and hooked up all the wires/connections/vacuum ball, ect but it won't work.
I have tried both the 1985 and 1991 cruise modules as they seem to plug into the same connector. The only thing I can think of is that it is not getting the speed signal.
I have a painless 4k pulse vss installed on my T5 and hooked up to the B9 & B10 pins on the 1991 ECM and have the red VSS wire from C1 ran to the cruise module.
I don't know what my next step should be.
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
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