95 4runner 22re, no a-c idle up? (1 Viewer)

Joined
Jul 30, 2017
Messages
97
Location
tucson 85719
Gents, (and Ladies)
I have a full-on virgin 1994 4Runner 5spd/ 4wd/ 22re. Recent/fresh engine runs great, except it struggles to idle with ac on. I dont sense any a-c idle up taking place. Should it? vac solenoid kinda deal?? Thx! KB
 
Joined
Mar 10, 2021
Messages
31
Location
Florida
Got one of these on it?

truck 004aciu.jpg


A/C idle up valve
 
Joined
Jun 25, 2021
Messages
679
Location
Marana, AZ
"Usually" it's a blown diaphragm in the idle up valve. BUT....the solenoid can also be bad. The valve is NLA new so troubleshoot to see if it's the valve or solenoid.

I got a used valve that worked from a friend. I also saw some good writeups on yotatec where some people used a later model valve from a Toyota van or something that is still available new. And there is a thread where a guy cut the crimp off the old valve, opened it up, replaced the diaphragm and used small nuts and bolts to put back together. Too much work for me.

You can always turn up your idle for now until you get it fixed.

If I can find those threads later I'll post the links.
 

pappy

photosynthesizing
Moderator
Joined
Oct 7, 2003
Messages
11,977
Location
Too far north. Too far east.
That plastic nut on top of the valve 88repo shared can also be turned to allow more air into the plenum, increasing the idle with the AC (counter-clockwise, up). The VSV was still available awhile back. 88690-22470.
 
Joined
Jun 25, 2021
Messages
679
Location
Marana, AZ
I think I saved one recently and I'm on the NW side. Let me go look.

Yep, I saved the one from my valve with the blown diaphragm.
 
Last edited:
Joined
Jun 25, 2021
Messages
679
Location
Marana, AZ
Here's the one I cut open. I checked it with a Mity -Vac and it didn't hold vacuum.

The diaphragm is dried out and cracked.

The OP can have the adjusting screw if wanted. I'm leaving for Wisconsin tomorrow so let me know soon.

IMG_20220830_115852993.jpg


IMG_20220830_115923142.jpg


IMG_20220830_115938847.jpg
 

Users who are viewing this thread

Top Bottom