#1 Cheapest, best performing, most gains noticeable mod for the Ranger. - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #1  
Old 08-21-2009
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#1 Cheapest, best performing, most gains noticeable mod for the Ranger.

A/C Bypass Switch:



Hands down.. you -need- to do it if you have air conditioning... This thing is amazing! Just did it last night, and it really wakes the engine up when your wanting to cruise down the road and dont need the A/C - but want your cool air still blowing through. The Freon in the air conditioning still chills the air thats being ran through it - not as much as runnign the compressor.. but more then enough to provide a cool environment.

Benefits:
*Free's up Horsepower
*Cures the engine "pulsing" when the A/C clutch kicks in
*Improves MPG's by freeing up engine drag... just like an underdrive pulley kit, and clutch fan delete. (If switch is turned off)



How it works: You make a cut in the line that sends the signal for the clutch to kick in and get the compressor running, then install a simple switch to flick it on or off - a rocker switch, some simple electrical connectors, and a few feet of wiring only runs about $5 and this is simple the most noticeable gain you will get for the price, and small amount of time put in.


How To:

https://www.ranger-forums.com/forum2...or-switch.html





I'll say it agian.. if you havent done this yet - pull off that front panel, and do it! I can promise you won't regret it - I personally ran the switch through my glove compartment as it wont be switched on and off all the time.


I also verified - if you are using an LED rocker switch, the signal being sent through the switch isnt enough to light up the LED sadly - You are better off just going ahead and using a base line rocker with no special gimmicks.



DO IT! NOW! It takes 15 minutes if you have your tools ready, 30 minutes if you gotta dig through and find the bits and stuff.. sooo stupid easy you'll regret never having done it!

Last edited by WowMike2001; 08-21-2009 at 11:53 PM.
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Old 08-21-2009
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i may have to do this mod, i hate the compressor kicking on, and off all the time
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  #3  
Old 08-21-2009
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Yeah, that bugged me all the time - with a K&N Intake you coudl hear it suck in a huge chunk more air every time it does that... Feels good not having to worry about it anymore
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Old 08-21-2009
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you run a scanguage to verify your mileage?
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Old 08-21-2009
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Scangauge is as good as the odometer style MPG guessers.. I don't really trust them too much - as there are way too many figures to be runnign the guesswork - I do the ol fashioned gas station MPG test - proper math, lol..


I'm not worried about MPG myself.. I realize that through my driving habits, I usually get 12/13/14 miles per gallon, since most of my driving is in city - This is just one of those mods that is guarenteed mileage because of the less engine drag - of course - if you drive with the compressor in the off position, it wouldnt change much - but I like the defrost/foot setting, this lets me not have to have the compressor on for it :-)
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Old 08-22-2009
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i never use my A/C, so if i do this will i see any gains?

Last edited by Willzane; 08-22-2009 at 12:37 AM.
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Old 08-22-2009
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yes because your compressor still kicks on and off
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Old 08-22-2009
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cool ill have to ask my buddy to help me with this. tomorrow i might do this
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Old 08-22-2009
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Originally Posted by Willzane View Post
cool ill have to ask my buddy to help me with this. tomorrow i might do this
Its actually pretty simple - If I feel up to it.. I coudl honestly make a video to show the cable needing cut, and where I mounted my switch - just need a crimper, some electrical connectors, wiring, and a switch.
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Old 08-22-2009
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this might be worth doing ill have to try this out tomorow while i am fixin my coolant leak and changing my brakes.
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Old 08-22-2009
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Just a hint - if anyone is looking for a ground for there switch - just splic into the ground for the cigarette lighter.. easy location to get to.. I jsut used one of thsoe press splices and some electrical tape to get a ground.
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  #12  
Old 08-22-2009
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On my 96, the AC clutch cycles on and off if I have the airflow selector set to anything other than panel only or floor only. So I leave it in panel only all the time and the compressor stays off.
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Old 08-22-2009
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I usually get mine pretty cold then turn it over to the off...

what I'd like to have is climate control so it cuts off after it reaches a certain temp...
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  #14  
Old 08-22-2009
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Originally Posted by joatmon View Post
On my 96, the AC clutch cycles on and off if I have the airflow selector set to anything other than panel only or floor only. So I leave it in panel only all the time and the compressor stays off.
This lets you shut the compressor off perma with the switch - and still pull air through the air conditioning system thats been cooled by the vent.. hence - Free AC
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Old 08-22-2009
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ok so if this is done how would u work the A/C? the same way, turning the **** to max ac for cooler air? i kinda dont get it
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Old 08-22-2009
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Basically you are adding a recirculate function and a a/c button because for some reason most American cars don't offer these functions.. Normally the AC pump cycles on and off when you have the selector in any position(yes even with the heat on) other than off, face or floor. When you want the a/c on just close the switch.

Last edited by whippersnapper02; 08-22-2009 at 02:03 PM.
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Old 08-22-2009
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Could you make a vid of where you put the switch and where to slice the wire, etc... I have no experiance with wiring but i would really like to do this.
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Old 08-22-2009
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You put the switch where you want it and all you do is cut a wire and put the switch in there.
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Old 08-22-2009
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the a/c still comes on with heat to take the humidity out of the air... so isnt it still beneficial to have the compressor be able to kick on and off with the heat on so your windows dont steam up
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  #20  
Old 08-22-2009
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For summer, there isnt much of an issue - I suppose if you live in a florida style place with extreme humidity.. there may be an issue - but I personally dont think it woudl be taht bad inside teh cab.. its easy to jsut switch it on for a few minutes if needed as well
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Old 08-23-2009
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I may do this today if I get time, sounds pretty interesting
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  #22  
Old 08-23-2009
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so the switch actually kicks the compessor on, but when the vent is on it blows are through the coils which makes it cold also, without the compressor? but without the switch mod, and u turn it on lets say feet area, its warm kinda air, will it still do the same, how come air doesnt flow through the coils on vent?
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  #23  
Old 08-23-2009
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I'd like to try this. Ford has changed a lot of the wiring colors for '07. I have that red plug, but it looks like

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From the top down, I have green/gray, green/orange, green/purple, and purple/gray. Does anybody know, is it still the top wire? Has anyone done this on an '07+? Thanks
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Old 08-23-2009
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Quote:
Originally Posted by NATEFX407 View Post
I'd like to try this. Ford has changed a lot of the wiring colors for '07. I have that red plug, but it looks like


From the top down, I have green/gray, green/orange, green/purple, and purple/gray. Does anybody know, is it still the top wire? Has anyone done this on an '07+? Thanks


Thts a good question, I didn't get a chance to look at mine today but i'd assume its the same, I hope someone can chime in on the differences
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  #25  
Old 08-23-2009
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Originally Posted by BSGRanger View Post
Thts a good question, I didn't get a chance to look at mine today but i'd assume its the same, I hope someone can chime in on the differences



https://www.ranger-forums.com/forum2...different.html
Quote:
For 2007, the switch can be used in EITHER the green/brown OR the green/orange at the Function Selector Switch.


So, from that statement, either the first pin, or third pin can be used - splice into either, insert switch, mount switch, and done :-)

Last edited by WowMike2001; 08-23-2009 at 08:53 PM.
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