Disconnecting air conditioning. (higher mpg)

[SoNic67]

Read the portion about the "VENT" position. Page 122.

 

[storlied]

My 98 V8 will cycle the a/c regardless of A/C or heat, whichever option... doesn't matter. I can sometimes feel a drag in the performance from it..

I'm interested in doing something about this too. Maybe just a belt but I fear my heat will be broken as I've heard it's used still for some reason.

 

[yavapaires]

Read the portion about the "VENT" position. Page 122.

Page 122 in my owners manual deals with the cargo, dome, map, and cleaning the interior lights. What book are you looking at????????

 

[budwich]

There may be a difference (but I doubt it). As suggested, read thru the manual a bit to the sections on the individual positions. As you have quoted, that "section" of the manual is just stating that the "selector" can be used to turn on the heater and A/C except in OFF... which is true... however, that statement does not make any statement about what combination of "events" happen with what position. You will see that in vent, the incoming air to the cabin can only be "cooled" to the temperature of the outside BECAUSE no A/C is done (and the outside air is circulated because of door positions)... similarly on the floor only position, the door is closed to stop outside air and again NO COOLING of air is done (ie. no A/C). The wiring on the switch has no way to make a connection in those positions. This agrees with both schematics and operator's manual. I don't think it has anything to do with canada versus the US... imo.

 

[yavapaires]

I am sick and damn tired of people telling me how fu--ing stupid I am. Even if you don't come right outand say it. I know how my Ex operates. The other morning the OAT (outside air temperature) was around 45F. With the VENT ( center dash) on, the outlet air temp, measured with a thermometer, was down to 36F. THE COMPRESSOR WAS RUNNING. Whether it is supposed to or not, is of little relevance. This is not the only vehicle I have owned where this occured. Also, it seems from other posts, it aint the only 96 that does this. Get over it people, that is the wat it is. Case closed.

 

[Karpiel73]

Whoa whoa, simmer down guys.

So while my Ex. is sitting at a red light in drive or in the driveway in park, the consistent ticking noise and change in rpms is the ac compressor?

 

[Stic-o]

can't you just pull the fuse or relay? :scratch:

 

[Trolling]

wait, i'm still confused.

does it go on even if i dont use the a/c, defroster or the heater? i mean, i've always had the knob set to off.

 

[SoNic67]

Page 122 in my owners manual deals with the cargo, dome, map, and cleaning the interior lights. What book are you looking at????????

I just read the one that I downloaded free from Ford for your Dead Link Removed. My original manual is for 2001 says the same. Same for My Mercury Sable, for Ford F-150... it is all the same for the Ford vehicles A/C. Now, I cannot say if or why your works all the time. Just state what it should be doing by Ford manual.
Dead Link Removed

Dead Link Removed

 

[yavapaires]

Karpeil73, that is the case with my, and it seems a lot of others. Maybe it not supposed to, but it does.

 

[yavapaires]

Trolling, yes, that seems to be the case.

 

[budwich]

wait, i'm still confused.

does it go on even if i dont use the a/c, defroster or the heater? i mean, i've always had the knob set to off.

OFF IS OFF. There is no electrical path in the system to allow the energizing of the a/c clutch (in 96 and a coupler others that I have looked at).... unless your system has a "problem"... ie. not running as DESIGNED. Outside of that, as you have read here, other positions can work any which way you "want" or "have"... consult your manual, be happy... if you want it to work according to its design, then investigate and fix the issue accordingly, some people here might even try and help track down the issue.

 

[yavapaires]

Well Mr Budwich, you seem to bave all the answers, tell the rest of us where to look to "fix the problem". The wiring appears to be factory, and never tampered with. I am sure I am not the only one who would like to know. But, I may be the only one to challenge you. So tell us how to fix it.

 

[budwich]

I think in your case since you are happy with its operation, you should leave it alone and be content that your vehicle is special... or you could just go to the next page in your manual (102) and changed the description for "vent" operation... that would fix it.... good day.

 

[yavapaires]

Budwich, you are at least partially correct. This morning I removed the heater control panel and did some checking with a test light. In vent (dash) and floor position the purple wire was NOT hot, in all other positions the wire was hot. I have to assume the purple wire sends a signal to turn on the compressor, by way of my testing. So my apologies to you, sir. However the damn compressor still cycles when in the mix(floor and dash) position.

 

[BrianDye]

My compressor on my 92, 95 sport, 95 XLT, and 00' Limited with digital controls ALWAYS cycles/cycled. No matter what the outside temp, no matter what I had the controls set to. Even when turned all heat/ac off, it still cycled. I pulled the fuse under the hood this winter. All was well. Now its warm again, so I put the fuse in and use my AC.

 

[SoNic67]

I guess you too need to read the manual... or the snipped posted by me above.

 

[tlutz211]

Ya I have a 97 sohc and the comp cycles no matter what position with the exception of off... It really irritated me then I found a thread on here saying that it is normal for this to happen in order to dehumidify... But while I have everyone's attention, perhaps someone might have a suggestion for my latest annoyance... Now that it's getting hot (Houston) we are actually running the ac. The problem is that the clutch will all of a sudden disengage and start blowing hot air (outside temp) but if I pop the hood and hit it once with a pair of pliers or something while running it restarts and blows cold! Wtf? Any ideas?

 

[yavapaires]

SoNic67, mine is NOT the same system that you refrenced. Mine is the manual system. Thank you for your input anyway.

 

[yavapaires]

Tlutz211, possible worn clutch, or loose wire connection. In my opinion