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

This part is still available for about 64 bucks I just got one last week

Hi Guys and gals,

With the time I had I looked through the forums as much as I could, but unfortunately I'm at work and this is time sensitive so hopefully you guys could offer me some advice on what to do to the van during my lunch break lol.

Drove my new to me 89 2wd 5speed to work (first time driving a standard manual vehicle, 1 hour to work, fun experience) and everything was going fin until 45 minutes into the drive I noticed the temp starting to rise. It started getting too close to the red so I pulled over and let it cool. It lost a little coolant, I'd guestimate about it took about 1 liter to fill it back up. Something interesting is that when I pulled over to cool it off I first tried turning the heater on to vent some heat but it wasn't giving me hot air. I know it worked before because I tried that out when I got the van running last week and It blew hot air when switched to hot. So something must have happened on the drive this morning. I'd research more thoroughly but I have to get to work. I have an hour lunch break later, what do you guys think I should check and attempt to fix at that point? I have access to random hardware from the maintenance department and I am no stranger to jerry-rigging or whatever the appropriate term is. Oh yeah and the thermostat was swapped out for a proper OEM part and gasket last week when I got the van running.


Edit*

Well it's lunch time, I was checking around "under the hood" and found this:

Attachment 5480

Am I right in assuming these are parts of the water temp sensor? That would make sense because the van did throw a code 22. Anyway, if this is indeed a messed up water temp sensor, would that be able to cause the engine to overheat? I'm curious as to what this water temp sensor does, because apparently theres another sensor of some sort that tells the dial on my dashboard how hot the coolant is. Anyway, please let me know what you think!

Please and thank you!
-Spencer

Also I'm done with work in about 2 hours and if nobody has any good advice it seems I'll be limping the van home :cry:

It is not likely this temp sensor caused your over heating. This sensor feeds the ECU with data regarding coolant temp so that the correct fuel mixture is delivered for the given coolant temperature.

I suppose if this sensor also fed data to the ECU to control timing, maybe in a roundabout way if the timing was being too retarded that could cause the overheating but I think likely coincidence.

Seems the easiest thing is get this connection fixed and then see if it does not over heat any more

The effect of having this sensor disconnected besides the obvious check engine light is that when a sensor is disconnected (has an open circuit ) the ECU will default to a rich fuel mixture to keep the engine operating. You would experience poor MPG and possibly smell a strong odor of fuel from the rich mixture, which in turn could damage the catalyst possibly from unburned fuel entering the exhaust.

Recently picked up an 89 Auto 4x4, non running.

I replaced the igniter and ignition/distributor coil and started putting the cover back on and noticed a wire that did not have a match. I can't find where the other end gets to. I only have the electrical wiring diagram for 87, and it does not show that particular wiring. I can trace wires from the same position to the TPS and an O2 and I think the oil level sender.

I recall reading that the 89s had a second O2 sensor, could this be for the second O2? Or something else I'm missing?

Attachment 5642

I would have to look at my other van when I got home to confirm but, I believe that is for the egr temp sensor which is a California emissions only item. My van is not California compliant though my wiring harness does have the mating connector. My engine apparently is so I have the sensor which is installed in the top of the intake right next to the egr valve. I believe if you look in the engine removal section of the factory service manual it mentions disconnecting this(California only) in the section about electrical connections to be disconnected.

Thanks for the info!

I searched pretty good and did not find the mating connector, so I guess it just isn't there. The manual did outline the part to disconnect in the engine removal section as well.

I left it loose, started it up, drove around, and didn't notice any big issues.

Can anyone identify what this part is on the driver side of the oil pan? Its a 1986 2WD 4YE.

Attachment 5859

My guess is oil pressure sensor or oil level sensor? Seems to be the source of a pretty serious oil leak.

Oil level sensor. There is an o-ring type seal on it. If you search "oil level sensor seal" you should come up with a part number.

Hay Tv family. I noticed the fuel gauge in my 1989 Toyota Van DX 4WD wasn't working so I hoped under to see the connections. Noticed the wires for the fuel sender had been caught up with the drive shaft. I ran to Pick N Pull and found some connectors and swapped it out for my missing ones. I have 2 wires, one brown and one grey that I can't seem to identify. I looked in my repair manual at the wiring diagram but can't seem to figure this out. Could this be for a fuel gauge cutoff switch? Help would be appreciated. Thanks gang.

Not sure if this helps but, I noticed in reading the engine wiring diagram, most of the brown wires are for check connector or sensor wires. If anyone can help clear this up, it would be greatly appreciated.

Found a clue to my unsolved mystery. Went to Pick N Pull this past weekend to pick a 1987 4WD TV, noticed the car was originally from California. Looking at the wiring that leads to the fuel sender and fuel pump, there was a connector that was unplugged. Very close to this unplugged connector was the downstream oxygen sensor. If any of you California TV drivers could clear this up for me, it would be greatly appreciated.

88 & 89's (FEDERAL) have a 2nd O2 sensor, it mounts in the rear pipe just behind the flange (ahead of the rear axle)
No idea about cali spec though.

I found a fossil on my 4WD, anybody know what it is?

Picture is rotated 90 deg.

Attachment 6125

Whatever that is, me think I need a new one no?

That looks like the A/C surge tank mounted to the top of the front crossmember of a 4WD.

Dhuh! Thank you sir!
I'm looking everywhere in the shop manual and Parts list and somehow completely overlooked the A/C System! The van is on the other side of the state since the hurricane and I'm going by pictures in my phone only.
Speaking of A/C, my 4WD is a single front A/C, my donor 2wd is a dual, how big of a job would it be to transfer the rear A/C stuff into the 4WD? (I'm planning of having the middle bench or captains in the back)

So, when I tore down everything instead of labeling everything physically I took a bunch of reference photos, but then, like you would expect, lost all my photos. :doh:

There are these two nipples that screw into the air intake chamber with the same OD's but very different ID's (one significantly restricted, the other is as open as it can be). Which one goes where?

I know the forward one goes to the PCV valve, but should that be the open or restricted one?

Here I am pointing to them...
Attachment 6415

The front one goes to the PCV Valve and the other one goes to the brake booster (metal line that comes off the firewall). The PCV valve port should be open. The restriction/flow is controlled by the PCV valve.

So I've noticed a yellow knob close to the cold start injector on the top of the block, that you can adjust to the left or right. I like to twist it sometimes when Im working on the van and pretend like I know what I am doing... but I dont. :cnfsd:

I searched forum and the manual but not quite sure what this is? Anyone know what it is and what it does?

thanks!

Do you have a photo? That does not sound familiar to me at all

Is this what you are talking about? I have no clue either.

Wow! Nobody knows what this is? Could it be only in California TV's? I think that is where mine originated.

Starting to collect any additional parts before I change out the engine and have spares are the same time.

Thank all of you.

MT

where does the rubber pipe go to? it looks like an adjustable valve or diaphragm.

It looks similar to the picture posted, but mine has a spring on the shaft and is aligned horizontally.

I can't seem to upload a picture on the forum so I've made a link: https://drive.google.com/file/d/1C5A...w?usp=drivesdk

Hope this works. Thanks for looking into this all, very curious now.

I do have a California model I believe. See the emission notes near engine opening. 86 LE cargo 2wd

Could not find it (yet) in my FSM for '87 but a few searches shows this as "Diaphragm, Sub-Assby. Cooler, Idle Up w/cooler, w/PS & cooler p/n 8860628010. Hopefully that is the number. Got my first cup of coffee done looking for that. I will go look at my vans after it stops raining as I have 4Y, 4YEC models.

Attachment 6553

The moral of the story is you shouldn't adjust things just because they are there.
I don't mean that in a mean way.
I think its just human nature as it is a fairly common affliction.

Many things have adjustable components, but its more about dialling things in at the factory, once set, they should require no further attention.

The problem is you don't know what issues you may have created by altering it or if its impacting your other issues, in any way.
Hopefully you can find the info on how to properly adjust it.

Hey BestyBrown:

I found a thread here:
http://www.toyotavantech.com/forum/s...hlight=idle+up

It is thread #10 where Tim identifies this part and explains what it does.

At least that is what my take is.

Check it out.

MT

Saw a youtube video of a guy with a toyota truck playing with his... RPM's of the "idle-up" vary as you turn the plastic knob... pretty sure counter-clockwise to increase idle speed.

A/C idle up valve.

It's the same on EVERY Toyota I have ever worked on. It is used to compensate for the load when the A/C kicks on and corrects the idle to the proper rpm.

If you are going to adjust it:

Start engine, note rpm.

Turn A/C on, note rpm and adjust as required to match engine idle rpm.

/procedure. :)>:

Attachment 6835
New 1987 Toyota Van owner. Smog Check repair shop says this part (valve) has a fume leak and is stuck open. It's on top or by the fuel tank. He took a picture of it and says he can't find the part to replace. Does anyone recognize this? Excited for the good times to come!

Thanks!

After doing some research I'm now wondering if it is the fuel level
sending unit.

Where did he say fumes are leaking from, and to where? For example, from the fuel tank to atmosphere, or from the tank to canister? Something about what the tech said doesn't make sense for a 30 year old vehicle. These don't have complicated EVAP systems like new cars.

Quote:

---

Originally Posted by VanCo

Where did he say fumes are leaking from, and to where? For example, from the fuel tank to atmosphere, or from the tank to canister? Something about what the tech said doesn't make sense for a 30 year old vehicle. These don't have complicated EVAP systems like new cars.

---

I'm guessing it was fuel tank to the atmosphere. He called it a fuel tank evap valve and said it was at the top of the fuel tank. Sounds like the mechanic might not have known what he was talking about. He said fume leak was definitely from this part he photographed.

This is the extent of the EVAP system:

Attachment 6836

There is a vent on the tank (looks like the picture you posted), it goes into a check valve then the charcoal canister, then the throttle body. There is no EVAP valve. If the vent is leaking, it may be a hose issue, or an issue with it sealing to the tank. That is not a "replaceable" part. Meaning, it doesn't/can't go bad.

When they check the EVAP line they pressurize the fuel tank with the line at the charcoal canister clamped. If the pressure drops there is a leak. If he detected a leak on the top of the tank specifically, you will need to drop the tank and reseal the vent, and replace the rubber vent hose.

Hi All,

I am looking for a replacement part for the hook that mounts beneath driver's side seatbelt to hold that seat up when accessing my engine. I have no idea what the part is called, and thought to ask you all here.

I have been a member for a while and thank you all for threads that have been very helpful on the road. I have been traveling the country full time for three years, and the Toyota support has been great.

A few months in the New Mexico desert heat has been brutal on the interior plastic parts of my van. Thanks for any advice.

:silvervan:

Quote:

---

Originally Posted by LDV

Hi All,

I am looking for a replacement part for the hook that mounts beneath driver's side seatbelt to hold that seat up when accessing my engine. I have no idea what the part is called, and thought to ask you all here.

I have been a member for a while and thank you all for threads that have been very helpful on the road. I have been traveling the country full time for three years, and the Toyota support has been great.

A few months in the New Mexico desert heat has been brutal on the interior plastic parts of my van. Thanks for any advice.

:silvervan:

---

Here is the part number and name part might be discontinued but check. It costs like 20 bucks I recall

58936-28010-03 Band,Engine hole service cover

Forget about the OEM plastic strap. They are hard to find and break easily.
You can make your own for $10 or less:

http://www.toyotavantech.com/forum/s...ng-some-parts!

Hi all!

while i was changing the engine oil yesterday on my 1988 4wd (atm tranny), i realised that the upper throttle cable was broken... i did not noticed any issues with that, but if this cable exist, it have his utility.....

What is the purpose of this cable? Where can i find it on the handbook? Is it easy to replace that cable?

Thank you!

Only 6 remaining at Rock auto

https://www.rockauto.com/?mfr=PIONEER&partnum=CA1990

was unable to find that cable somewhere else