The WHAT-IS-THIS-PART and WHAT'S-THE-PART-NUMBER Thread for US Toyota Vans 1984-1989

[davidgracevan]

i saw this pic and tried to compare it from my van, and i think some parts of my van is missing, can someone tell me where do the these (orange arrows) tubes go?... and what is this (red arrow) square? thanks

[timsrv]

The vacuum lines go to your power steering air valve. This is a device on your power steering pump. It's sole purpose in life is to slightly increase your idle speed when you crank the wheels hard (helps prevent stalls due to the load of the power steering when cranking steering hard while at idle speeds). The little black box (red arrow) is the connection point for the big + wire from the alternator. Tim

[davidgracevan]

now i know, thank you very much sir Tim for that...

[davidgracevan]

sir Tim, do you have any picture of that air valve in the PS pump?.... thanks

[timsrv]

[davidgracevan]

-thanks sir Tim for the picture, i checked my PS pump, there's no hole for the air control valve, i think it was replaced already... thanks again sir...

[davidgracevan]

-our van's engine has an ISC valve, when does this operate or turn on?

[davidgracevan]

-on the driver's side (door armrest), we have the master switch for the power windows and the power locks, mine has a missing button, between the power lock switch and power window switch, what is it for?

[JRSJ]

I believe that button is to disable the passenger side lock/window controls (I could be wrong). That particular button in my van is missing as well, but the PO had soldered a bridge between that circuit so that the passenger side works.

Someone correct me if I'm wrong.

[davidgracevan]

-mine is just a hole but with no solder to bridge, the passenger side power window still works... what could it be?

[JRSJ]

I looked into it and checked the owners manual.

1986 Toyota Van Owners Manual (I don't imagine it would be too different from an '89 manual.)
Page 51

"When the "P/W LOCK" switch is pushed in or the "WINDOW" switch is in the "LOCK" position, none of the windows, except the driver's window, can be raised or lowered."


You can view the manual here. Hope that helps.

[davidgracevan]

-thank you very much sir, now i know, i'll try to restore that switch back...thanks again...

[DeVan InterVantion]

Does anybody know what the green 2-wire connector goes to? It's in the bundle of 3 harnesses: TPS harness, O2 sensor harness + this Green connector. This bundle of 3 are all about the same length. I do not see anything that this green connector can connect to.
The van in question is an '88 LE, auto 4wd.

Thanks

.

[timsrv]

88 - 89 vans that were originally sold in California had stricter emission requirements than vans sold in the other 49 states. Vans sold in CA had different ECUs, a slightly different engine wire harness, and an EGR temp sensor. It looks like your van has the CA harness and quite possibly the CA ECU. That wire with the green end goes to the EGR temp sensor which is probably missing from your engine.

You could try to find that sensor or you could find a non-CA ECU (assuming yours is a CA one) and forget about it. The other option would be to just let it hang, but your "check engine light" would most likely illuminate and your ECU would display a code #71 while in the diagnostic mode. Tim

[mr_josh]

Hi all,

I'm Josh, I have an '86 2wd TV that was given to me after I brought it back to life. It's running pretty doggone well right now with the exception of some cold start issues that I'm going to troubleshoot this weekend.

Unrelated to that -I think- is this thing that I found under the passenger side front dash today (see attachment). It's a blue connector, at least three fairly large-gauge blue wires on one side, several other wires of varying gauge and color, too. Before I start scouring the service manual, anyone have any idea to what this is supposed to connect? Some accessory that I don't have? As far as I can tell, everything in the van works okay.

Thanks in advance!

Josh

[timsrv]

I'm pretty sure that's your Passenger side door harness. The wires it holds are for power windows, power locks, and the little red courtesy light in the door panel (none of which would work with that thing unplugged). Another possibility is the doors were replaced with non-powered ones and the harness is left over??? Tim

[mr_josh]

Well- the van has manual windows and no power locks, but I'm fairly certain that the doors haven't been swapped. I don't know, anything's possible, but the interior trim panels are the same, the locks are the same, everything looks pretty original.

I'll do a little investigating tomorrow and see what can be seen. I'll write down the wire colors and look at the FSM to see what can be deduced.

Thanks!

Josh

[Campwagon]

Why, its the HISTORY ERASER HARNESS!! what ever you do don't jumper the 2 main wires!! lol

[JRSJ]

Tim is correct, it is the plug for all the powered goodies in the door.

[Campwagon]

so, If one were to find power everything front doors they would plug right in? that would be kinda cool....