My 4 runner ac install. Factory A/C install, from A/C Switch to condenser.
I'm going to list part numbers and sources for everything that was required.
A/C switch used from fb marketplace
A/C Relay harness used from fb marketplace
A/C harness for an 86 mmccul3797
A/C amplifier mmccul3797
Evaporator box used from fb marketplace
A/C low pressure switch # 2227541010 toyota dealer
Thermistor 8862589101
Evaporator denso 476-0006 amazon
Expansion valve denso 475-2086
Liquid line tube (goes from Expansion valve through firewall) used from fb marketplace
Hardline from liquid tube to condenser hardline (discontinued toyota)friend
Rubber line from Evaporator to A/C compressor friend (rebuilt at hydraulic shop)
Rubber line to condenser used fb marketplace(rebuilt at hydraulic shop)
A/C compressor denso 471-0133
A/C manifolds used fb marketplace
A/C compressor bracket used fb marketplace
A/C compressor bolts to bracket 22re performance
A/C idler pulley toyota #88440-35030 22re performance
A/C belt 22re performance
Condenser denso 477-0133
Hardline receiver dryer to condenser (discontinued)friend
Hardline from dryer to Hardline from Evaporator (discontinued)friend
Receiver dryer denso 478-0101
A/C o ring kit 4 season 26751 amazon
PAG 46 oil Autozone
R134a retrofit fittings similar as thee mudder va-lh11 on amazon
Miscellaneous mounts and brackets for condenser, receiver, and ac lines from friend
A/C vsv toyota 88690-22470
A/C idle up valve 88606-28010
Vacuum hose 1.5ft section to hookup up idle up vsv Autozone.
A/C r134a mine took 1.6 lbs at a local autoshop that charged me 70$
Good write up I used
How to install A/C in a 1st Gen Pickup/4Runner | IH8MUD Forum
Tons of research in toyota forums, and the fsm
Notes
A/C amplifier and amplifier harnes need to come from your model year. There's differences in wiring harness that connect to truck (see ih8 mud link) and the amplifiers are different per fsm ewd's (cross reference 86 to 87)
Receiver drier "in" direction needs to have the "in" port connected to hardline that goes to condenser not the hardline to Evaporator
The Autozone sure bilt r12 conversion fittings #lx vc12 the high pressure side was too deep to depress Schrader valve to charge.
Apparently all these trucks are wired for A/C. I found the ac vsv plug wire under upper intake. Follow the vsv wiring on top of valve cover toward intake and it will be taped up or in my case hanging down. Learned this from mmccul3797.
Add oil to components per fsm.
I could have saved some money and reused Evaporator and condenser but figured I went this far might as well get new. I could have reused other components like idler pulley vsv idle up etc to save money. Buying the stuff used gave me a lot of the hardware need to install which made life easier since it all went in oem locations. I purchased this truck with what looked to be a home made ac system that used a hodge podge of parts and didn't work. Trying to fix is what lead me on this rabbit hole and luckily I found light
No expert but learned a ton and more than happy to share. Hope this helps
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