Another after-swap-wiring question
Thread Starter
Supreme Member
Joined: Mar 2001
Posts: 1,346
Likes: 2
From: Monticello, IN USA
Car: 1991 Z-28
Engine: 350
Transmission: T-5 (gonna buy the farm)
Another after-swap-wiring question
Okay, on the A/C compressor there are 2 conectors, one in front, just behind the pulley, and one on the rear. Both have a green wire that are conected to each other, then this green wires goes to the ECM. Can anyone tell me what the controls? Can I wire this up differently if it is something I need?
Thanks,
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Joshua Johnston
1991 Z-28
Flowmaster
K&N
305 / 5spd. (Temporary)
Soon to have:
350, Ported Vortec heads, Edelbrock RPM, Holley 750 D.P., HEI, 11.07:1 CR, Comp Cams Roller-.510"/.520"-282*/288* dur., Shorty Headers, Dual 2.5 Exhaust, T&R Motorsports custom air intake
Thanks,
------------------
Joshua Johnston
1991 Z-28
Flowmaster
K&N
305 / 5spd. (Temporary)
Soon to have:
350, Ported Vortec heads, Edelbrock RPM, Holley 750 D.P., HEI, 11.07:1 CR, Comp Cams Roller-.510"/.520"-282*/288* dur., Shorty Headers, Dual 2.5 Exhaust, T&R Motorsports custom air intake
Junior Member
Joined: Aug 2001
Posts: 79
Likes: 0
From: Fredericksburg, VA
The green wire is the power lead off of the PRESSURE CYCLING SWITCHes it engages the clutch at a certain pressure, and disengages when pressure falls(low freon,)or gets too high It is also a signal to the ECM that A/C request is on(I think this regulates fans and idle) the power from this can be traced directly to the HVAC controls in the interior
mike
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"Experience life, Don't use it" Julie (petrick) Fink
mike
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"Experience life, Don't use it" Julie (petrick) Fink
Supreme Member
iTrader: (1)
Joined: Feb 2000
Posts: 2,361
Likes: 1
From: Savannah, GA
Car: 1997 Jeep Wrangler
Engine: 4.0L
Transmission: 5 speed
Axle/Gears: 8.8 rear, 4.56 gears, 4:1 transfer
The switch on the rear of the compressor is the HIGH PRESSURE CUT OFF switch. It opens when the pressure exceeds 430 psi and dis-engages the clutch to prevent damage.
The connector on the front of the compressor is the CLUTCH ENGAGE, it is the one that actually turns on the A/C.
Your '91 A/C is similuar to this wiring link here: http://www.geocities.com/vtcamaro/Pi...rams/pg231.jpg
The CLUTCH CYCLING SWITCH is on the accumulator, it turnes the compressor off when the pressure drops below 29 psi, as when the system is low and needs a re-charge.
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86 Camaro Sport
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Hooker Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project
The connector on the front of the compressor is the CLUTCH ENGAGE, it is the one that actually turns on the A/C.
Your '91 A/C is similuar to this wiring link here: http://www.geocities.com/vtcamaro/Pi...rams/pg231.jpg
The CLUTCH CYCLING SWITCH is on the accumulator, it turnes the compressor off when the pressure drops below 29 psi, as when the system is low and needs a re-charge.
------------------
86 Camaro Sport
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Hooker Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project
Thread Starter
Supreme Member
Joined: Mar 2001
Posts: 1,346
Likes: 2
From: Monticello, IN USA
Car: 1991 Z-28
Engine: 350
Transmission: T-5 (gonna buy the farm)
Thanks guys. I got the engine running, but my gauge problems need fixed first. It is cooling off here, so I won't need the A/C.
Thanks again,
------------------
Joshua Johnston
1991 Z-28
Flowmaster
K&N
305 / 5spd. (Temporary)
Soon to have:
350, Ported Vortec heads, Edelbrock RPM, Holley 750 D.P., HEI, 11.07:1 CR, Comp Cams Roller-.510"/.520"-282*/288* dur., Shorty Headers, Dual 2.5 Exhaust, T&R Motorsports custom air intake
Thanks again,
------------------
Joshua Johnston
1991 Z-28
Flowmaster
K&N
305 / 5spd. (Temporary)
Soon to have:
350, Ported Vortec heads, Edelbrock RPM, Holley 750 D.P., HEI, 11.07:1 CR, Comp Cams Roller-.510"/.520"-282*/288* dur., Shorty Headers, Dual 2.5 Exhaust, T&R Motorsports custom air intake
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