How To: A/C In an LS Swapped 3rd Gen! | LSA Blower Swap
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- Опубликовано: 29 авг 2024
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Parts Below!!!
A/C Wiring Diagram:
i38.tinypic.com...
1986 Camaro A/C condenser, newer years are a different part number!
www.amazon.com...
Accumulator:
www.amazon.com...
r134a Retrofit Kit:
www.amazon.com...
Specs for shorter A/C hose:
coldhose.com/c...
16 inch #10 (1/2) inch hose
Fittings: Part # BL1310, BL1323
Hawks Ls swap f body hoses:
www.hawksmotors...
PCM Pins:
www.ebay.com/i...
The following parts can all be found on Rockauto.com:
Evaporator:
FOUR SEASONS 54537
4th Gen A/C Pressure Sensor and connector:
FOUR SEASONS 36698 Pressure Switch
FOUR SEASONS 37236 Harness Connector
Ford Orifice Tube:
MOTORCRAFT YG343
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This video was a LONG one.. I didn’t install the catch can being I hope to have the blower on very soon.
Thank you SO much for this. Just recharged my stock AC setup in my '90 Camaro with the Ford orifice as suggested. 33 degrees at the vent on max in 86 degrees ambient sitting still. First time it's made cold air in 17 years!
I thought the wiring was going to be a lot more challenging lol. I’m not excellent at wiring and I’m pleased to know it’s this simple. Thank you for the great and knowledgeable videos!
Third Gens have never be known for having the greatest a/c. I replaced the whole system on my 84z and still my a/c sucked. I switched from electric fans to mechanical clutch fan ftom an 87 monte carlo ss. It fit right in with minor modifications. Car runs cooler, does not drain power, and my a/c actually works better. I will seal my evaporator shown in this video so i can get colder air. Great video thanx for the info!
So I sealed my evaporator just like in the video, man, i can feel the difference! My a/c is actually blowing cold air. When I replaced my evaporator I never sealed it and it was the reason for me not getting enough cold air! I'm very happy and enjoy driving my 84z now! Thanx LsxMatt for putting informative videos for us third gen enthusiasts!
Great content in the vid! Just a side note to help you and anyone else out that has the older cars, the 88-92 cars have a different high side hard line that has a pressure switch where you put yours but the service port and orifice tube are up right next to the air drier/accumulator. You can put that line in the place of what you have now and it will be much easier to service the system.
I dig the long videos Matt...they make me wanna swap something for myself other than just for customers at my shop haha....btw gotta say Coldhose kicks ass, I used them in my "Arctic chiller" design for super cooling my lsa supercharger coolant and never had an issue with any of the kits I sold using their hoses...they are insanely fast for shipping too that's the main reason I keep using them.
Great content! Thanks for making this. Helps me out immensely. Keep up the good work.
@lsxMatt This is a great video, but there is one mistake. When using a fixed displacement compressor like your Sanden, the A/C request signal from the dash control needs to go through the existing low pressure switch before going to the PCM. The low pressure switch is needed to prevent the evaporator freezing up. The LS1 Camaros didn't need a low pressure switch because they used the V7 variable displacement compressor that internally sensed the low pressure and adjusted flow to meet demand.
I'm working on doing this with out ecu I did an ls swap can you h3lp me with wiring up the request straight to relay to c9ntrol low and high pressure switch and compressor clutch. Thank you for your time
@@goldking1438 What vehicle?
@@Mike_Neukam 91 rs camaro
Hey you should get the heater valve ac Delco 15-5533 it will work with the 3ed gen vacuum selector and when on full cold it acts as a bypass so pump still circulates. It's the valve from a 99 k1500 and many other vehicles.
A little more info in case some finds this trying to solve their problem. Right now your air is going through the hot heater core and the AC box add this valve and the heater core will not be getting hot water. The 4th gen uses a flapper door to divert the air and water all ways flows through the core thirdgen shut off water flow to the core. But ls pumps require the heater core ports to flow. This valve allows this.
Loved the detail that you went into. Great video!
super clean and nice looking, I hope my looks like that when I get going
Been waiting for this upload all week. Can’t wait for the supercharger install.
I did that to my Regal years ago it was so Cold people were shocked!
I also deleted air intake from under the hood and drilled holes in case inside carefully! Haha
Awesome video! I just subscribed as well! I just completed my Supercharged LS Swap. Plan to add AC at a later date, so I’m glad I came across this video. Thank you!
You have a great channel! This is my number one channel. Can’t wait to see you put in your super charger.
Makes me want to go out and get me a 3rd Gen to go with my 4th Gen now.
Great video man! I would love to connect AC onto mine again.
Great video. Really saved me! Will be doing the same ac install very soo !! Thank you Matt!!
Any chance you can update the wiring diagram, looks like the image hosting is gone.
First of all, love your third gen! Beautiful car! I would like to ask, how did you wire your dual Ls fans to your camaro! Did you use the stock wiring to connect them? Or did you buy a wiring kit? My Camaro is a 1984 z28. It is equipped with a single electric fan. I would like to upgrade to a Ls dual fans from a fourth generation Camaro. I just don't know how to go about wiring the dual fans. Any help i would appreciate it! Thanx and keep the videos coming!
its very likely you can split the line and add onto it, the cool part about electric motors is that they cant pull power they are not being supplied without damage, if you split the line and run it to both, worst case scenario is that your fans don`t spin as fast, that could even be changed however if you put a higher amp fuse. just make sure the cables are wide enough to handle it
Thanks for posting lol actually replacing my evaporator and accumulator this weekend now I know which way to put the orifice tube 👍🏻
Paul Sermeno No problem! Haha don’t forget the foam!
Where do the orings that came with the accumulator go can’t figure it out already got the evaporator ones on
I'm not into blue but that car is clean asf
How did you hook the wiring up for the ac? did you do a basic standalone harness?
I can't help but notice you didn't include the low side switch in your wiring diagram. Is it hooked up or no?
What did you do about the heat coming off your heater core? Did you install a bypass valve to stop circulation of the coolant through the heater core?
Dude awsome video
Great videos - thanks. I just opened the evaporator in my untouched 1985 camaro sport coupe to replace it for R134 conversion. My evaporator has a screen glued onto the drivers side with glue like the residue you can see on your evaporator. Looks like someone has had your evaporator out and has removed the screen. Perhaps if was used to filter out leaves and debris from getting into the plenum?
I would assume that a g body ac system would pretty much be the same thing. Thanks for the video.
Really nice work!
Dang man you should have replaced your condensor with a parralel flow condensor you can get them from summit or classic industries. spectra part number 7-4426
rfoster2323 Lmao by the time I learned about this I was pretty much done with the video. I’m gonna see how it does in the 90 degree weather then go from there.
I live in Tn and its pretty humid here most of the time. I changed mine to a parallel flow and my vent temps went from low 60s to low 40s.
Also that is a good tip about that foam next time I open mine up I will replace the foam like you did.
I found it, thanks. Definitely on the list now.
So is the spectra 7-4426 better than the spectra 7-3231?
When you did this how did you make your electric fans work
Is there a particular reason why you chose those sensors?
I was debating on using the sensors from the truck "year/model" and get them through rock auto (crazy cheap for each 1).. My swap came from a 2005 truck (using a similar compressor) as you into a 95 c1500 T56 conversion. Not sure whether to order what you posted up or use what went into the vehicle that my transplant came from into a 10 year old truck..
The parts you mention look close/identical (small differences), 1 sensor is a 3 pin (high side) and the other for the dryer/accumulator is a 2 pin. ECM is a P59 DBC, Holley turbo manifold (7875 Gen 3) and Holley cooling manifold drive system (pieced it together much cheaper than the whole package saved almost $1300), air is all that's left, hard lines and rubber lines are en-route.
Thanks for the content!! Love the channel!
Thanks for the video. This is gunna help so much..
Great vid man... couldn't you use the 3rd gen A/C harness and just send the a/c request signal to the LS PCM? I'm using a Holley Terminator X, so it'll be interesting to see how it goes. But my car was not a factory a/c car, so I swapped in the harness and control module from a 90 model camaro. Hoping to use the thirdgen relay and switches with the sanden compressor. We'll see... thanks for the vids!
Dang you swap out everything, lol…wasn’t sure where the leak was, lol…I’d just went and had some custom hoses made,and used the GEN3 stuff and a compressor of my choice,lol. Ok I will cut you a break, ya I probably would of done the same thing based off of your investment of everything else...
Matt. Do you have the specs for the lower hose by chance? I see you put the one for the top shorter one
Subscribed! I just bought an 88 IROC and plan to do an ls swap. I’ll be using your videos and advice so thanks in advance. This may be the wrong thread to ask but are you using spacers on the front?
I just did a ls1 swap and used the same PSI harness as you. What I want to know is how did you wire your blower motor power? Looks like the blower motor harness plugged into the factory engine harness and mine is long gone.
Fantastic video. Thanks!
Can you put the part number for the Ford Orifice tube that you used
Motorcraft YG343
Hey man i know this is old but i had a question i did everything you did on the video and my ac compressor doesnt turn on? Do i need to program the computer for the ac to turn on? 89 firebird with a 5.3 is what i have.
Badass video 👍👍
What’s the part number for the pressure switch?
Sweet car!!
im doing this for a customer of mines , has exact same set up and motor .. other than the other parts where did u get the a/c compressor bracket ?
Hey great vid I’m doing it now .but what if u got the blue n green connectors on the ecu ?
why is the orfice tube a motor craft part ?
It’s from a 96 crown Vic.
Did you have any fitment issues with AC box and rear valve cover?
where did you get the LSX rocker molding sticker from?
My firebird didn’t come with A/C stock I’m taking the engine out and prepping everything for a swap does anyone know if you can get a kit to fit an evaporator in it or maybe steal one from a junkyard 3rd gen that had A/C? Would like to install ac along with the swap
Where did you get the high pressure sensor from?
Its a Four Seasons part #, 36698. Rockauto and Amazon has them.
Ok thanks bro
2 questions did you buy a new LS motor and if so what year is it? I have a 86 IROCZ and thinking about putting a LS motor in it. Any feed back would be greatly appreciated. Thanks in advance
I watch a lot of your videos and have learned a lot, thanks for the help. Great video’s and very nice car
How did you wire the a/c? Did you wire it into the ls pcm?
The link to the condenser has the inlet and outlet on the drivers side but in your video it looks like they are on passenger side. Is that correct? I am doing LS swap in my 85 and don’t want to run lines from passenger side to drivers side condenser if I don’t have to.
The picture is upside, that’s the correct one. You can also get a parallel flow condenser now that works way better with modern refrigerant. Check out rockauto.
That’s where I have been looking It just looked like the connections to the condenser were in drivers side and was hoping to get one with passenger side connections
Is the condenser you have still holding up good.
@@JacobKetelaar-d8m Yea its fine but I want to swap it out for the newer style for better cooling.
Last question hopefully. I haven’t been able to get a straight answer from parts sellers. If I replace the evaporator, the condenser, and accumulator with brand new parts that have never had r12 In them, can you run 134 or do the parts need to specify 134 compatibility? Some parts on Rockauto like some of the accumulators and evaporator don’t specify 134 compatibility. I did find the spectra parallel flow condenser on there and it does state 134 compatible
What brand accessory bracket are you using?
Did you changed the blower inside the cabin?
Hey Matt who did your swap? I’m located in Long Island NY
Are both side of the hose 12 o clock position?
so even i have a a 5.3 swap in a 91 do i just buy the parts you have on the links ?
Do you have a video on your pulley set up? Before the blower...?
George Herrejon yea check in my lsa blower swap playlist. I have a video installing the lsx concepts accessory drive.
Where did u bougth the sterring wheel from?
Hello bro do you still have ig if so can you send me the AC wiring diagram my wires were cut
Ok, so question for you matt. Currently have a 89 GTA that im wanting to upgrade the system to 134A. But my blower blows at defrost only. Could be the diaphram under the dash or the vacuum line correct? Is there an upgrade to this style system that is decently easy?
Yea theres a hard vacuum line that runs from the hvac harness in the bay over to a port on the intake manifold. On my car it goes to that black plastic box by the brake booster. Make sure that line has vacuum first. But yea, defrost is the default blower mode, so if you have no vacuum to the diaphragm in the dash, it wont switch.
Nevermind, just watched the rest of the video. Very clean setup. Seems relatively simple. Awesome ride, awesome videos. Gained a SUB today.
You have a link to where I can get that steering wheel?
How many wires do we have to pin in
I need the same ac hoses what's your spec?
What evaporator did you use?
im gonna have to order a new hardline with two ports , could I still use the 4th gen pressure switch ?
Yea
Did your a/c compressor have a lead for power or did you use the connector from psi ?
Psi doesn't give you any a/c connections. I had to wire in my own a/c.
Thanks man got everything installed just about just have to wire up everything
What compressor, pulley/bracket, and belt are those?
The compressor I got with my accessory drive from lsxconcepts.
I need spec on long line please
did you solder the high pressure sensor to the line?
Can’t be soldered to any aluminum line. If copper, plan for 400 PSI stability.
hey I have a question I wanted to know did you use the AC recognition wire to stepler throttle up when your compressor comes on?
@G B > On the “LS” engine, regardless if drive by cable or drive bace cabe, the A/C button inside is a request to the compressor to come on. The PCM looks at the 3 wire “Trinary” switch to see if pressures are too high to allow A/C operation. The on-off switch at his compressor shuts off when pressures are low (Evap Freezing) or on to start cooling. The PCM will maintain programmed warm idle, colder air fast idle and back out the IAC for slightly higher idle warm if A/C is allowed. If drive by wire, same thing only it uses the internal motor of the throttle body to run a little faster.
No additional switches or wiring is required. Just let your re-programmer know if you have A/C or not to enable this function or at least double check to make sure it is on. They can raise the idle for all functions warm if running a high lift cam or A/C. If the power steering high pressure line is equipped with a fitting for a PCM sensor, idle will rise when hitting lock or end of travel for the P/S as the internal p/s valve drags down the engine as well. Hope this helps!
ASE Master Tech since 1978 - Retired
@@deankay4434 @ on ls stand alone harness,,, I will use the 3 pin trinary high pressure sensor,, frim 04 tahoe,,, But,, which pin on pcm i would use ? As a/c request!!?
GerardO, > The best place to go, is on the Internet at Lt1swap.com At this website you can get your wires and functions now and later if reprogrammed by Brandon. He only charge $50.
My GM service info timed out so I am working blind except for the PCM & BCM systems being used on my 1967 C10. All parts come my sons wrecked Tahoe but 2003. I don’t think anything has change but all on paper in plastic sheet protectors in order of cells. Sorry, best of luck! Brandon is tops with tons of info! Also, inside the button requesting A/C compressor on, the signal travels to PCM thru class 2 serial data.
@@deankay4434 @ i been on lt1swap,, I dont see a a/c request on list,, all i see its to remove yhe a/c outputs, But i want to use all a/c stuff
@@deankay4434 @ do u have a 67, i do too, U got a/c?? On c10
What's up with the chevy lumina steering wheel
Have you seen the stock base model thirdgen wheel?🤮
@@lsxmatt yes I have. I have owed 2 91 camaro rs and 86iroc 87iroc 85iroc 86 camaro
134 a is80% of original r12 charge
Whats the part # for the compressor you are using? It looks sweet.
SD709, Summit sells them.
Stupid question, I have an 87 gta stock tpi setup still, I converted to r134 a few years back, works ok, not great. Will that spectra part number 7-4426 work in my car, would I have to change anything??
I know at some year the hardline going to the evaporator changes, so there’s a different condenser part number. Just check your year on rockauto and they should have the spectra condensor that fits.
I made it 22 seconds, techno music and somebody washing their car on a video that supposed to be about air conditioner bracket
1 oz of oilngood
And no it will not cool like the r12 did. Thanks EPA