FJ62 de-smog question...
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Indeed, and where'd you find the replacement one nipple vacuum piece?
As far as wiring. This engine is in my FJ40. As such, I had lots of creative freedom when it came to installation. As I recall, the harness for those three VSVs comes off the cowl harness, not the engine harness. So, all the "extra" wires were removed, including the connectors for the other two VSVs. The wires for the fuel pump VSV was singled out, and I installed a Weatherpack connector. I think this was the only connecter where I didn't retain the OEM plug. Reason? The fuel pump VSV is wired with something else (EGR?).
Thanks to @pappy I hooked my fuel regulator VSV back up. I took apart the factory plug by removing the wires (after marking them) and only left the two wires for the VSv I was using. I soldered in a couple of wires and ran them in the loom to the alternator, then put them in a heat resistant sleeve to the vsv. To go back to stock, I would only need to splice two wires.
Not as pretty an engine bay, but this is what it ended up looking like.
EDIT!! Please note the vsv rubber lines are hooked up backwards!!!
Not as pretty an engine bay, but this is what it ended up looking like.
EDIT!! Please note the vsv rubber lines are hooked up backwards!!!
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Good catch. The way it's plumbed would just amount to a vacuum leak.
The vacuum line from my FPR doesn't go to the VSV, it's routed to a nipple right next to the big hose on the front of the intake manifold. A difference perhaps, with the California emissions 3FE?
I suppose one could attach the single VSV along side of engine compartment without taking apart wire harness while still losing the big bracket on top of inner fender. This piece does have those washers intended to reduce vibration, which suggests this feature may have some value?
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Pappy, I just finished desmogging my '88 FJ62. One of the tees on the VSV for the FPR was broken before removal, and all three VSVs were frozen "open." Just removed all of them. I saw the part number in the picture you posted, and did a search - apparently, Toyota still stocks a part with that part number, although it has a female plug port rather than the two wires running into the top through a rubber casing. I ordered it and am going to try wiring it up, and connecting it to the FPR.
Nothing but positive things to say so far re: Desmog. Engine runs smoother, and the noticeable bog at 1500-2200 RPM is almost gone now. Also, the transmission seems more responsive. Previously, getting it to downshift required significant throttle input. Now, it feels "right." It also holds gears longer. I thought perhaps the kickdown cable needed adjustment, but removing the smog equipment actually fixed the transmission shifting issues that were mild annoyances.
Will report back after I receive the new VSV and try wiring it back in. Curious about MPGs. The engine definitely feels like it is running better now.
Wow! Look at that open acreage under the hood on the 62!
When I rebuilt my 3fe I completely desmogged it. I got rid of everything that wasn’t essential. All the VSVs, charcoal canister, throttle body heater, air pump, plugged the ports in the head. I think the only vac line I have is for the fuel pressure regulator. It runs awesome, especially with the H42 swap, but I have noticed if it gets hot in traffic, it’ll bump the idle up to ,1500-1800 rpm.
I’m wondering if that has anything to do with the FPR VSV? I’m going to dig it out of my random parts box and re instal it and see what happens. 
I’m wondering if that has anything to do with the FPR VSV? I’m going to dig it out of my random parts box and re instal it and see what happens.
I reinstalled my FPR VSV last month and, while the performance is about the same, I saw a 15%+ improvement in fuel efficiency on the highway.
which of three VSV'S/wiring did you use?
I noticed Toyota tended to mount their VSVs to plates or assemblies mounted to the engine with rubber isolators. I'm guessing that may be a way to reduce wear and tear from engine vibration. I moved my FPR VSV from the intake manifold to the firewall.
So I'm pretty sure I'm running into issues with my FPR, idle is funky and seems to be running rich. Went to look at it today and was tracing to vacuum lines and realized I tossed the VSV's when I desmogged my FJ62, yay! That when I found this thread....
Any ways in my quick search looks like the toyota discontinued the 25860-61010 VSV for the FPR and smog stuff.
However, I found this on City Racer OEM Vacuum Switching Valve for Land Cruiser FJ62 FJ60 FZJ80 - https://www.cityracerllc.com/products/oem-vacuum-switching-valvefor-land-cruiser-fj62-fzj80
Does any one know it this will work instead?
Any ways in my quick search looks like the toyota discontinued the 25860-61010 VSV for the FPR and smog stuff.
However, I found this on City Racer OEM Vacuum Switching Valve for Land Cruiser FJ62 FJ60 FZJ80 - https://www.cityracerllc.com/products/oem-vacuum-switching-valvefor-land-cruiser-fj62-fzj80
Does any one know it this will work instead?
