oldgold3vze

The air valve on my 85 22re is located under and slightly behind the throttle body with 2 coolant and 2 air lines and a blue electrical plug running into it, but I can't seem to find it on my 89. The problem is that I want to put the 22re from my 89 into my 88 4runner (currently has the 85 motor in it) with as little intake modification as possible. Now, my question is, how important are the air hoses that run into the valve? I can easily run the coolant lines, but the intake on the 89 motor doesn't have the plugs for the air lines. What would happen if I connect the coolant lines, but block off, or loop, the air lines? I really favor the clean factor of not having these extra air lines, but I'm afraid they are pretty important and I will have to switch the entire intake.

thook

I really don't understand the problem. If you're going to put the '89 motor in, that would make it unneccessary to do anything with the air valve....you'll have a different motor entirely. Or are you saying you're just going to put the bottom end from the '89 into the 88', but use the '85 induction system?

Oh, the air valve on the '89 motor is integrated with the throttle body. It's underneath of it......fastens to the belly.

oldgold3vze

My dilemma is that there is this blue plug (it goes into the air valve) that is part of the 88 wiring harness that I need to plug in to the air valve, but the 89 motor doesn't have the air valve or plug.

thook

Ah.....well, that's okay. It doesn't matter. The 85'-88' models had a remote auxiliary air valve. The vacuum hose runs from the TB to the valve and to the intake plenum. When the motor's cold the valve is open, air passes through the TB hose, through the valve, through the second hose, and into the intake to raise the idle until the motor warms and then valve shuts almost completely. The connector is a heater circuit powered via the fuel pump relay. When the ECU detects the coolant temp to be operating temp, it shuts power off to the connector. That connector goes to the bimetal element that actually operates open/shut of the valve. Anyway, the '89 motor/air valve/TB style none of that is necessary. The air valve in this case is thermal wax regulated and integrated with the TB, so no remote air hoses are necessary nor does it require voltage heating. So, you can just leave the blue connector uplugged and wrap it with tape or something to keep water out.

oldgold3vze

Awesome! That is the exact answer I was hoping to hear, wrap it and forget about it. Now, what if I want to try and fix up my 85 motor and put it in another toyota without the blue plug on the wiring harness?