Has anyone actually used a 3.4 AC Amplifier?

b18vteceg · 07-30-2009, 01:44 PM

Tried everything under the moon to get my 3.0 ac amp to work and the only way i can get the compressor to work is to basically hot wire the compressor and bypass the amp and that's just not an option. so i went and got a 3.4 ac amp and wired it up and it still isnt getting the correct input from something because it still wont give a +12v to my compressor. there is alot of hear say about people doing this but i have not seen any posts on it.

So i'm callin people out! hahah.....has this been done and who has done it and how did they wire it to function?

Thanks

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yodathespian87 · 07-30-2009, 02:05 PM

Haven't done it but still working on splicing mine together and I recall certain wires for the A/C amp. It works stock so there must be a way to get it to work.

vital22re · 07-30-2009, 02:29 PM

you're probly not getting any pwr to it because you have not enough freon or too much. Or you don't have things properly wired. Look up the wiring diagrams and study them well.

b18vteceg · 07-30-2009, 09:02 PM

studied them for the last 3 weeks....its wired correctly.....and there is no sensor for too much or not enough freon.....not that i know of unless its built into another switch....i get power to my 3.4 amp board and everything tones out per specs from TIS but when i hit the ac switch it never sends power to the clutch....

ozziesironmanoffroad · 07-30-2009, 09:40 PM

well if the old 22r/22re a/c compressors have a low freon sensor that wont supply power to the compressor if theres not enuf freon, then why wouldnt yours?

vital22re · 07-31-2009, 02:11 AM

i don't think you looked at wiring long enough... there are dual pressure switches that cut out for too high pressure and too low as to not kill the pump. And if the rig is auto theres a cut out if your coolant temp gets high. So yeah .... could be any one of those.

bwhitehead · 07-31-2009, 03:28 AM

b18vteceg,

They may be right. Since you were using the ac with out the ac amp before since some one wired incorrectly previoulsy you may have the high pressure swith cutting the system out. We can take a look at it today.

vital22re · 08-01-2009, 12:23 AM

b18vtec did you get the ac amp for the same year/model as your swap? I have the matching one for my swap and my a/c works fine. I was told by the dealer it needs to match the taco to taco and runner to runner depending what your donor was.

b18vteceg · 08-02-2009, 05:35 PM

they do not match but i ran the number with toyota dealership and they said the same amp was used from 96 to 00 and mine is a 2000.....and check all my pressure switches and they are correct....bwhitehead and i are gonna tackle it some more tomorrow....

odonekanobe · 08-08-2009, 09:34 AM

I have been waiting for someone to show how to get the a/c to work on the swap. I know with an ORS harness, or even TMZ's that they work, but I really would like to know what I need to do to get mine to work. I have all the mechanical parts, I just need to know what I need to do to wire it to work.

thefallman · 08-17-2009, 08:39 PM

Its simply a matter of wiring to get them to work. Thats the way ORS and TMZ do thier harness's. Now to get them to work PROPERLY and shut off the compressor at low idle and other such things, you need to use a 3.4 a/c amp. Which is simply a matter of making a conversion harness from the a/c sections of the wiring diagrams of the years of your swaps.

Im using the 3.4 ac amp in my 89 and will do the same in the 92 4runner its been over 3 years since i did my swap so im not sure on the details but im going to do a full write up on every step of the 92 4runner swap.

the 92 will feature full working
3.4 Cruise Control
3.4 A/C amp
3.0 A340H Automatic trans.
and other features.

b18vteceg · 08-17-2009, 10:43 PM

i purchased a 3.4 ac amp and made a conversion harness and its still not kicking it on....brandon and i are still working on it....but its been sorta put on the back burner....its possible my ecu might not be giving the correct signal....

i wont go into TMZ harness's.....because mine started out a TMZ harness.....but ors i believe uses a relay....regardless im still working on it.....

thanks for your input....

vital22re · 08-17-2009, 11:24 PM

still strugglin with this? is your system charged? Is your dryer clean? My ac has been workin decent after the swap.

07-30-2009, 02:05 PM	#2 (permalink)
yodathespian87 Contributing Member Join Date: Apr 2008 Location: Colorado Springs, Colorado Posts: 467	Haven't done it but still working on splicing mine together and I recall certain wires for the A/C amp. It works stock so there must be a way to get it to work. __________________ 86 Pickup 4x2, Manual (Sold) 87 Extra Cab Pickup 4x4, Manual (Sold) 93 4Runner 4x4, Manual, 3.4 Swap In progress 90 4Runner 4x4, Manual, Blown 3.0 (Stripping out for parts then to become a trail rig/camping/fun truck) 94 Lexus SC400, 1UZ, magnaflow exhaust, after market headlights, bought for parts for the swap into the 90 4Runner

07-30-2009, 02:29 PM	#3 (permalink)
vital22re Registered User Join Date: Feb 2006 Location: kirkland washington Posts: 683	you're probly not getting any pwr to it because you have not enough freon or too much. Or you don't have things properly wired. Look up the wiring diagrams and study them well. __________________ 92 toyota truck 3.4 5spd 4.56 gears magna flow cat and muffler2 1/4 piping isr mod to intake 1.5 bjsfront add a leafs and 2inch lift shackles rear rancho shocks all around sitting on 265/75/r16 nitto terra grapplers

07-30-2009, 09:02 PM	#4 (permalink)
b18vteceg Registered User Join Date: Apr 2007 Location: Vancouver, WA Posts: 92	studied them for the last 3 weeks....its wired correctly.....and there is no sensor for too much or not enough freon.....not that i know of unless its built into another switch....i get power to my 3.4 amp board and everything tones out per specs from TIS but when i hit the ac switch it never sends power to the clutch.... __________________ -88 3VZ-E SR5 Runner lifted on 35's - locked front and rear - 63 chevy springs - Rock Sliders (STOLEN) :( -88 3VZ-E SR5 Runner OEM BABY! (SOLD) -91 3VZ-E SR5 Runner OEM BABY! (SOLD) -94 3VZ-E SR5 Runner 32" BFG (SC 3.4L) (MINE FOREVER) -95 3VZ-E SR5 Runner 32" MTRs (SOLD)

07-30-2009, 09:40 PM	#5 (permalink)
ozziesironmanoffroad Registered User Join Date: Sep 2007 Location: Spring Valley, CA Posts: 5,677	well if the old 22r/22re a/c compressors have a low freon sensor that wont supply power to the compressor if theres not enuf freon, then why wouldnt yours? __________________ The 22r series engines are made from the fires of hell, and will fight tooth and nail to not be sent back. 1988 Toyota P/U 4x4 22re, 1200 miles on the rebuild engine builder .268 cam pioneer CD deck 31x10.50x15 BFG A/T BAJA 100W lights on prerunner bumper KC Daylighters 100W rancho rs5000 MUD IS A VALID PAINT JOB! If not living life to the fullest, why live it? my trucks official buildup thread

07-31-2009, 02:11 AM	#6 (permalink)
vital22re Registered User Join Date: Feb 2006 Location: kirkland washington Posts: 683	i don't think you looked at wiring long enough... there are dual pressure switches that cut out for too high pressure and too low as to not kill the pump. And if the rig is auto theres a cut out if your coolant temp gets high. So yeah .... could be any one of those. __________________ 92 toyota truck 3.4 5spd 4.56 gears magna flow cat and muffler2 1/4 piping isr mod to intake 1.5 bjsfront add a leafs and 2inch lift shackles rear rancho shocks all around sitting on 265/75/r16 nitto terra grapplers

07-31-2009, 03:28 AM	#7 (permalink)
bwhitehead Registered User Join Date: Mar 2004 Location: Vancouver WA Posts: 16	ac b18vteceg, They may be right. Since you were using the ac with out the ac amp before since some one wired incorrectly previoulsy you may have the high pressure swith cutting the system out. We can take a look at it today.

08-01-2009, 12:23 AM	#8 (permalink)
vital22re Registered User Join Date: Feb 2006 Location: kirkland washington Posts: 683	b18vtec did you get the ac amp for the same year/model as your swap? I have the matching one for my swap and my a/c works fine. I was told by the dealer it needs to match the taco to taco and runner to runner depending what your donor was. __________________ 92 toyota truck 3.4 5spd 4.56 gears magna flow cat and muffler2 1/4 piping isr mod to intake 1.5 bjsfront add a leafs and 2inch lift shackles rear rancho shocks all around sitting on 265/75/r16 nitto terra grapplers

08-02-2009, 05:35 PM	#9 (permalink)
b18vteceg Registered User Join Date: Apr 2007 Location: Vancouver, WA Posts: 92	they do not match but i ran the number with toyota dealership and they said the same amp was used from 96 to 00 and mine is a 2000.....and check all my pressure switches and they are correct....bwhitehead and i are gonna tackle it some more tomorrow.... __________________ -88 3VZ-E SR5 Runner lifted on 35's - locked front and rear - 63 chevy springs - Rock Sliders (STOLEN) :( -88 3VZ-E SR5 Runner OEM BABY! (SOLD) -91 3VZ-E SR5 Runner OEM BABY! (SOLD) -94 3VZ-E SR5 Runner 32" BFG (SC 3.4L) (MINE FOREVER) -95 3VZ-E SR5 Runner 32" MTRs (SOLD)

08-08-2009, 09:34 AM	#10 (permalink)
odonekanobe Registered User Join Date: Jul 2007 Posts: 29	I have been waiting for someone to show how to get the a/c to work on the swap. I know with an ORS harness, or even TMZ's that they work, but I really would like to know what I need to do to get mine to work. I have all the mechanical parts, I just need to know what I need to do to wire it to work.

08-17-2009, 08:39 PM	#11 (permalink)
thefallman Registered User Join Date: Jun 2006 Location: Walla Walla, WA Posts: 550	Its simply a matter of wiring to get them to work. Thats the way ORS and TMZ do thier harness's. Now to get them to work PROPERLY and shut off the compressor at low idle and other such things, you need to use a 3.4 a/c amp. Which is simply a matter of making a conversion harness from the a/c sections of the wiring diagrams of the years of your swaps. Im using the 3.4 ac amp in my 89 and will do the same in the 92 4runner its been over 3 years since i did my swap so im not sure on the details but im going to do a full write up on every step of the 92 4runner swap. the 92 will feature full working 3.4 Cruise Control 3.4 A/C amp 3.0 A340H Automatic trans. and other features. __________________ ~Brian GETTING FIXED 89 Ex-Cab 3.4 Conv. T100 Auto Tranny ~Phoenix 94 Ex-Cab 22re 5spd Came with parts truck. Doesnt run yet. 90 4runner 3.0 Auto (Wifes Toy) 92 4runner 3.0 Auto (Currently With Blown Engine) (New 3.4 Swap i think)

08-17-2009, 10:43 PM	#12 (permalink)
b18vteceg Registered User Join Date: Apr 2007 Location: Vancouver, WA Posts: 92	i purchased a 3.4 ac amp and made a conversion harness and its still not kicking it on....brandon and i are still working on it....but its been sorta put on the back burner....its possible my ecu might not be giving the correct signal.... i wont go into TMZ harness's.....because mine started out a TMZ harness.....but ors i believe uses a relay....regardless im still working on it..... thanks for your input.... __________________ -88 3VZ-E SR5 Runner lifted on 35's - locked front and rear - 63 chevy springs - Rock Sliders (STOLEN) :( -88 3VZ-E SR5 Runner OEM BABY! (SOLD) -91 3VZ-E SR5 Runner OEM BABY! (SOLD) -94 3VZ-E SR5 Runner 32" BFG (SC 3.4L) (MINE FOREVER) -95 3VZ-E SR5 Runner 32" MTRs (SOLD)

08-17-2009, 11:24 PM	#13 (permalink)
vital22re Registered User Join Date: Feb 2006 Location: kirkland washington Posts: 683	still strugglin with this? is your system charged? Is your dryer clean? My ac has been workin decent after the swap. __________________ 92 toyota truck 3.4 5spd 4.56 gears magna flow cat and muffler2 1/4 piping isr mod to intake 1.5 bjsfront add a leafs and 2inch lift shackles rear rancho shocks all around sitting on 265/75/r16 nitto terra grapplers Last edited by vital22re; 08-17-2009 at 11:40 PM.

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