Just finishing up a head gasket replace on '92 22RE FI pickup.
Pressing the clutch in gives a relay click from the glove box area but no starter solenoid energize. Have I forgotten something?
Fresh battery, clean terminals, ground tight behind compressor, solenoid wire still attached to solenoid.....

 

See starting/ranking system explained on my build thread. It's for 86-88 4Runner but should be similar to yours.
Got a multi-meter? if not Harbor Freight is your friend.
keep us posted.

 

I almost sure this is a re-assembly issue since it was doing fine previously.
Safety Interlock?
Harness plug on plenum?
Seat switch?

 

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The only safety interlock I know is the clutch switch.
What harness plug on the plenum?
What seat switch?
What exotic 4Runner do you have?

Did you look at starting system to see what it takes to make starter solenoid click?
Anything else working?

Let me reiterate...
Got a multi-meter? if not Harbor Freight is your friend.

 

run a jumper wire with a spade from the starter motor (where the small wire attaches to the solenoid on the starter) and turn the ign to on and tough the jumper wire (that is attached to the spade connector you put on the starter) to the bat +. this will turn on the starter and as soon as you disconnect the wire from the batt + it will stop the starter motor.
if this works than you have a corroded wire to the starter soloniod (usually it is the first 5" of the wire attached to the starter) or your clutch cancel/nss wire is messed up.
so basically your ign switch is not making + from the batt through the keyed switch through the safety switch to engage the starter.
good luck

 

You can lead them only so far!!!

 

Now that was easy to read...
The ground is wet with the "chocolate milk" that came out of the pan.
It's good to tell me "spade terminal" so I only have to stay under it shortly. I was going to use an alligator clip to jump it.

I understand clutch safety switch.
Please, what is cancel/nss ?

 

I believe the clutch cancel switch is the button of the left hand side of your dash. That you depress to start the truck without pressing the clutch. Now that I have opened my mouth I'm probably wrong. Good luck

 

Do you have a ground wire from the firewall to the driver's rear side of the head?

 

nss= for an auto, neutral safety switch

 

You need a measurement of the voltage to the starter signal wire to the solenoid. If its less then 10v it will struggle to start/not start.

 

This will cause a lot of problems (EG frying a $400 stereo system... :homer