PS, thanks for all the help and God Bless!

 

The a/c compressor should not run when the cooling fans kick on. The compressor is only turned on by a relay that supplies power when you turn on the a/c. The compressor is not at fault.

I would unplug the a/c compressor relay and test the relay socket. There are four pins: Two pins should have 12V all of the time. One will be grounded to activate the relay (open circuit when the relay is off). The fourth pin feeds power to the compressor. The wire color for the fourth pin is the same as the color of the wire at the compressor (red I think).

 

The idle-control system is supposed to anticipate the AC running. If some wires are crossed to cause the AC to come on when its not supposed to, that would certainly confuse the idle system. (AC is a much larger load than the fan alone.)

 

Ok so heres another update: After all the other parts and fixes Ive tried (read above posts). I decided to try another before I give up and take it to a mechanic (ouch to the pride!!) I read one of the posts in the DYI forum about idle issues. After 3 different IACV's I tried to see if maybe it was the FITV staying open or something like that. So I took it off and was able to get the whole intake top assembly off, and got the FITV off but not before I broke 2 bolts off. The previous owner lived near the ocean here so aside from the bad paint, the engine, etc. has a alot of salt corrosion, so almost every part I take off breaks a bolt. But anywho I took the new FITV, cleaned it up and tested the thermostat following all the instructions from the DIY, and of course it still does it.

Im hoping someone that reads this can figure this out, because honestly Im stumped on this one. One other detail I can add that may help someone figure this out. When Im in the car and the cooling fan comes on, I can hear the same sound cominf from the vents that the a/c makes while the compressor runs, its hard to describe the sound, but all cars make it. The same sound you hear from the vents when you turn off your a/c. Like the freon thats left escaping. So I know this must be compressor/condenser/AC related.

 

If it is wire crossed thats going to be a tough one. Im an ex service tech for washers, dryers, and ozone generators and I remember how hard it was to diagnose and trace wire/ ground issues!

 

So you probably understand how much harder it is for US when we cant even see your car from here...

Watch the hub of the pulley on the A/C compressor. The clutch is visible, and youcan SEEthe clutch/hub spinning & stopping as the A/C cycles. That will absolutely verify if the A/C is or is not running.

 

Your description suggests an overcharged AC system causing a compressor overload or a compressor that is failing and has a lot of internal friction (inadequate lubrication). This might overwhelm the ability of the IACV to compensate for compressor load.

Yes, fans and compressor always come on together. You need air moving over the condensor for the AC tocool, hence fans always run w/ AC.

You may need a complete AC overhaul; new/used compressor, condensor, receiver/drier,evaporator,and a good flush if the compressor is shedding metal particles. These particles will become distributed in the AC system and cause replacements to fail. Very difficult to flush from condensor and evaporator. I like used parts, and if you DIY this repair is not that hard.

Good Luck

 

OK here is what you do.. first off, make sure that the a/c is off and the fan speed inside the car is on off, this should keep compressor from engaging..
Now,, start the car , if the a/c compressor clutch is engaged,,( get a flash lite and look at the outer part of the compressor ) anyho.. if it is engaged,, chk to see if you get power at the red wire ( wire going to compressor ) if you get power there and a/c is on the off mode, there is something energizing the relay or red wire is getting a power supply from some other place, make sure that the red wire is not pinched anywhere.. if ok,, pull the compressor relay and see what happens ..

also as it was adviced,, if a/c system is overcharged it will cause what it seems a rough idle ..too much load.. but for that the a\c needs to be engaged ,, even if system is overcharged and a/c if off ( compressor not engaged) it has no bearing on the idle ..

IF there is no power at red wire .. and the clutch is engaged,, chk the a/c compressor clutch gap ,,

if the fan switch on the off position inside the car you should not have or hear any air flow from the dash vents ( at idle ) car not moving ...
chk this and let us know

 

Desert Honda: I just got your reply and I printed it to go check everything you said. I did however get a chance to check the clutch when the a/c is turned off. And YES the compressors clutch does activate and spin when the cooling fan comes on. This is with the a/c completely turned OFF. So I am pretty sure I have a short somewhere. Ill post back shortly, im giong to check the rest of what you said in the post above. Thanks again guys for your patience. I know mine is very close to running out and just living with it.

 

Ok, I have a few more details on this. I checked wires and couldnt find anything pinched. And the clutch looks ok as far as I have knowledge for. But heres another couple things that may help figure this out. When the car is warmed up, and the cooling fan comes on (turning the compressor clutch also) and I take out the cooling fan fuse, OR, remove the connector that goes to the fan control module under the glove box, The cooling fan stops, BUT the compressor keeps running. And it will stay running until I put the fuse back in or connector back on and cools the engine down to the correct temp to open the coolant temp switch. And if the the fuse or connector is OFF and the car reaches the normal temp to turn on the cooling fan, ONLY the compressor clutch activates at the high temp.
So the compressor clutch is turning on at the same times the cooling fan should, whether or not the cooling fan itself is in the circuit. So the compressor must be crossed directly with the cooling fans hot wire somewhere. Where I have no idea. Needless to say Im even more frustrated then before and just want it fixed, I hope this update helps someone figure out and Thanks again.