ramrugby09

Ok... Ive charged my a/c and it works while Im driving. When I stop and am just idling the compressor cuts off. If I slowly give it gas the compressor will kick on right past idle.

oh yeah... 1986 4Runner 22RE

^VooDoo^

I belive thats normal, Well, I know in some vehicals.
It keeps from over heating in idle and Give the engine a chance to rev before the load is forced on it.

the_4runnin'_beast

That sound right to me...BUT...If that ain't the case it could be the A/C compressor clutch? In which case you would brobly need to replace the whole unit.

ramrugby09

Well...I guess thats right? So the compressor can only come on when I am driving? I'm not sure about that because to fill the system you have the truck idle and turn the a/c on full blast. When there is enough pressure it should kick on and suck the freon in....right? To fill mine I jumped the compressor so it would pull it in. Anybody?

bruizer

At idle,on a hot day, the system runs high head pressure and is inefficent.

TNRabbit

There is what looks like a large plastic BOLT to the left of the head; use it to idle up to @ 1100 rpms when the AC compressor is kicked in and it will keep the AC going when you are at idle rpms. There is also a low pressure cut off switch behind the glovebox that will adjust up the compressor cut off. If the plastic bolt under the hood doesn't work, THEN try the screw behind the glovebox.

AaronW

TNRabbit,
Could you describe the plastic bolt a little more in detail for me? I'm having difficulty locating it.

TNRabbit

Go to this link: http://www.toyotanation.com/forum/t113388.html

just to the right of the "E" in EFI on the intake manifold it shows the bolt. That thread also addressess other idle issues with the 22re.

nunsa

Greetings!
With all due respect to other posters, Nah!
Your compressor should not kick off at idle! One more time: Your compressor should not kick off at idle! With that being said, Your AC idle up needs to be adjusted! My guess! Educated! With the AC on there's a big screw, plastic, let me think, pass. side? Turn it up! Yes, turn it up!
Take care of your prob.s!
Let me know!

4runnerx3

Look behind the glovebox door. Near the top is the air conditioner amplifier. It has a little knob for adjusting compressor cut-off. If the cut-off rpm is too high, turn the adjustment knob clockwise to adjust, and turn it counterclockwise if the cut-off rpm is too low. The magnectic clutch cut-off is 600-700 rpms.

TNRabbit

You need to adjust the idle up first. (under the hood)

Willcipher

Another thought, it's possible the A/C idle up VSV is not working or the vacuum lines aren't correctly attached. The A/C compressor will kick off at RPM's below the A/C amplifier threshold; set from the factory at roughly 600 RPMs. With the compressor engaged, the VSV should pass a vacuum to the bypass valve (thing with the big white screw). I believe the engine should idle around 850 with A/C on.

ramrugby09

Ok where is the a/c idle up vsv? Is it on the valve cover? Does it have two vacuum lines going to the plastic screw adjuster that is next to the F in EFI? If so mine is not connected at all. I have found several sets of wires dangling under the intake manifold. One set is W-G and W-R, one is blue and W-Black, and one is a single green. I looked in my haynes manual and found that the A/C idle up vsv has a W-G and W-R going to it so...? Any ideas?

TNRabbit

Can you post pics of your underhood mess?

ramrugby09

I can try to post one up.

04 Rocko Taco

Always a help.

ramrugby09

Ok here they are.

etan

could be overcharged. too much pressure in the system.... can affect your idle and everything.

TNRabbit

Holy Crap! Did they just cut it off??!? I think I may have what you need; let me check when I get home....

ramrugby09

Yeah they just cut it off. I've been drivin like this for a year!