Broken Cruise Control
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Supreme Member
iTrader: (1)
Joined: Mar 2010
Posts: 1,088
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From: Goose Creek, SC
Car: 1987 IROC-Z and 1988 Iroc-Z
Engine: 5.7 350 V8 and 5.0 305 V8
Transmission: 700R4 Automatic Transmission
Axle/Gears: 3.27 Posi
Broken Cruise Control
The title I think speaks for itself. Why is it my cruise control isnt working? I recently replaced alot of the fuses which fixed most of the electrical but cruise is still broken.
Supreme Member
Joined: Jun 2005
Posts: 1,800
Likes: 2
From: Bremerton, WA
Car: 1992 RS / 1989 RS
Engine: 3.1L MFI / Vortec 383 TBI
Transmission: T5 / LS-T56
Axle/Gears: 3.42 open / 3.73 Eaton posi
Re: Broken Cruise Control
Mine doesn't work either. I think it's the switch on top of the clutch or brake pedal misaligned, just need to get under there and fix and/or replace it. Might be worth a look for you to check that out too.
Junior Member
Joined: Oct 2009
Posts: 33
Likes: 0
From: Groton, SD
Car: 1992 Chevy Camaro Z28 G92
Engine: 305 TPI
Re: Broken Cruise Control
I am having the same problem. Just replace the push rod bushing on my clutch thinking that would fix the problem. When my old bushing broke off, The cruise stopped working. It was zip tied for about 2 months. I figured the clutch was resting on the senser. New bushing went on and nothing happened... Senser possibly stuck? Let me know if you discovered anything
Supreme Member
Joined: Sep 2002
Posts: 9,192
Likes: 19
From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: Broken Cruise Control
If it helps anyone, here's the wiring diag for cruise: http://www.austinthirdgen.org/mkport...se_control.jpg
Wiring diags for almost everything are here: http://www.austinthirdgen.org/index.php?pid=19
Wiring diags for almost everything are here: http://www.austinthirdgen.org/index.php?pid=19
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iTrader: (2)
Joined: Sep 2009
Posts: 1,591
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From: WI.
Car: 1987 iroc
Engine: 383 TPIS intake, Dyno Don headers
Transmission: 700R4 w/Pro-built Auto/transgo 2-3
Axle/Gears: 3.27/3.70 borg warner 9 bolt
Re: Broken Cruise Control
The two most common causes are the brake light switch on the arm of the brake pedal and the cruise control module behind the passenger side dash.
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iTrader: (1)
Joined: Oct 2005
Posts: 1,050
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From: Glen Park, NY
Car: 1987 IROC-Z
Engine: TPIS II Supercharged w/Nitrous
Transmission: 700R4 Probuilt
Axle/Gears: 3:73 Richmond 12 Bolt
87 IROC Cruise Control Module
I have been looking for my cruise control module.. You state that it is on the passenger side. Take off protector panel. It is located up by the ecm? I still don't see it.
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Supreme Member
iTrader: (2)
Joined: Sep 2009
Posts: 1,591
Likes: 5
From: WI.
Car: 1987 iroc
Engine: 383 TPIS intake, Dyno Don headers
Transmission: 700R4 w/Pro-built Auto/transgo 2-3
Axle/Gears: 3.27/3.70 borg warner 9 bolt
Re: 87 IROC Cruise Control Module
Its about 4" square 3/4" thick mounted on the end of the heater box on passenger side. It's a tight fit to get to, but you should'nt have to remove any dash parts.
Supreme Member
iTrader: (1)
Joined: Oct 2005
Posts: 1,050
Likes: 0
From: Glen Park, NY
Car: 1987 IROC-Z
Engine: TPIS II Supercharged w/Nitrous
Transmission: 700R4 Probuilt
Axle/Gears: 3:73 Richmond 12 Bolt
Re: 87 IROC Cruise Control Module
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