02-11-2014, 06:08 PM | #1 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
|
AC wiring
I have the AC working but not through the Computer. The new compressor doesn't have the connector for the wiring harness. Is there anyway to get this wired so the computer controls the AC?
Anybody done there this way before? The compressor is running off the fan switch out of the dash through the low pressure switch on the acumaltor which is hooked to the ground wire of the compressor. The 2 wire connector is just laying there not hooked up to anything. I tied it off to the bracket.
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
02-11-2014, 07:23 PM | #2 |
1965 Chevy C10, 2005 4.8L/4l60
Join Date: Aug 2004
Location: DFW Texas
Posts: 8,546
|
Re: AC wiring
I have an old air system and it doesn't go through the computer either.
__________________
Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 support our troops! |
02-11-2014, 07:38 PM | #3 |
It's alsways something.....
Join Date: Nov 2008
Location: Douglasville GA
Posts: 1,171
|
Re: AC wiring
Andy, If its working now Id leave it alone. I remove the ac wiring from the LS harness and have the tuner remove the ac from the computer. As far as I know, all it would do thru the computer is bump up the idle when the ac is on, and Ive never had it be an issue with the ac not run thru the computer. Hope this helps
__________________
1968 RS Camaro 'Vert Matching number 327 and M21 Muncie 1968 C10 Black with red interior and orig paint. 5.3 / 4l60e,3:73 POSI 17" Torq Thrusts 1968 CST 514 Red with black interior. Buddy Buckets, Factory A/C, PS, PB- 20" AR custom shop TT, 5.3 and 4l60e |
02-11-2014, 07:49 PM | #4 | |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
|
Re: AC wiring
Quote:
Yes it does. I thought it kicked the thing off when you got on it hard. If this isn't the case then yes I will leave it alone and put the plug back up into the wiring where it can't be seen. Thanks. I don't know where I got this idea but that is how I I always thought it worked.
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
|
02-12-2014, 01:50 AM | #5 |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
|
Re: AC wiring
When wired through the PCM, the compressor will be shut off at WOT. You would need both hiigh and low pressure switches in your A/C lines, then you would need to wire the fans to becontrolled by the PCM if they are not already. Then the fan control would need to be enabled in the tune to change the recirculate door wiring to fan controls. You would also need to wire in an A/C compressor relay to the clutch. Its doable, but if its worked the way it is in the past, I'd just leave well enough alone.
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
02-12-2014, 07:41 AM | #6 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
|
Re: AC wiring
Yea, that sounds like the thing to do. Just leave it as is.
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
02-12-2014, 11:42 AM | #7 |
*************
Join Date: Apr 2005
Location: Pensacola, FL
Posts: 17,858
|
Re: AC wiring
+1! I'm mean 3,
__________________
Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 |
02-13-2014, 10:44 AM | #8 |
Vintage Evil
Join Date: Aug 2005
Location: Hastings, Nebraska
Posts: 956
|
Re: AC wiring
I thought I read somewhere there was a wire to connect the AC to the computer to bump up idle when the AC was running?
|
02-13-2014, 12:05 PM | #9 |
Registered User
Join Date: Nov 2001
Location: Springfield, MO
Posts: 2,939
|
Re: AC wiring
Yes there is, I am sure his installer took care of it.
Mine is controlled by by normal dash switch but I "teed" into the "power" to the AC compressor to my computer so it will bump the idle when the AC is on. I need to bump it up some more it will still try to stall at times. Combined with the cam and now being a manual it seems to be a bit tricky to "catch" the idle quickly when the clutch goes in during a stop.
__________________
Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!" |
02-13-2014, 01:44 PM | #10 | ||
Senior Member
Join Date: Jul 2009
Location: Athens, AL
Posts: 499
|
Re: AC wiring
Quote:
Quote:
For what it's worth, the aftermarket Sanden compressors or the stock Gen III/IV compressors don't take a lot of power to turn. In my opinion, it's not even worth the added hassle for the ECM control because they just don't load the engine enough to matter. |
||
02-13-2014, 02:31 PM | #11 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
|
Re: AC wiring
I was told not to worry about it and run it as is. That's how I plan to roll! Will see how it does this summer and go from there.
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
02-13-2014, 04:21 PM | #12 | |
Registered User
Join Date: Nov 2001
Location: Springfield, MO
Posts: 2,939
|
Re: AC wiring
Quote:
Dave
__________________
Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!" |
|
02-13-2014, 04:56 PM | #13 |
Slots go on anything!
Join Date: May 2003
Location: Richardson, TX
Posts: 5,957
|
Re: AC wiring
Andy, the wire that is powering your Sanden compressor- is that the green wire that went to the original compressor?
__________________
1974 Jimmy- 5.3/4L80e/NP241 |
02-13-2014, 05:55 PM | #14 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
|
Re: AC wiring
Yes, just like it was before the swap. I ran it coming home the other night from Hawks but really didn't pay it much attention as to it idling up are anything. I was to worried about how the motor sounded with the new exhaust! It got cold though!
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
Bookmarks |
|
|