AC Idle Up Vacuum Switching Valve (VSV) Replacement (4 Viewers)

[84Cressida]

Reviving this old thread because my VSV is clicking on and off and worried it may be on it's way out. (And I also now own the Cruiser that started this thread )

Is this part still available or is there an alternative? Below is what I have now.

View attachment 3905461

That’s 88690-32280. Call a dealer and ask if still in stock (and how many)

 

[kody472]

That valve is easy to test: just apply 12v and should click and 'open' to allow vacuum/air and when 12v removed it's closed. You can try cleaning it, including pulling off that black cylinder thing, which is a filter, and blowing it out. A drop or two of WD40 in the nipple and in the tube where the filter is sometimes frees up the solenoid.

Otherwise, many of those valves are still available, and only about $30ish

I'll give it a shot. I know it's working, just starting to make a loud constant clicking noise.

 

[kody472]

That’s 88690-32280. Call a dealer and ask if still in stock (and how many)
View attachment 3905509
View attachment 3905510

I'll do that. Wouldn't hurt to have spare parts around.

 

[Spike Strip]

FWIW, and for future searchers, all these VSVs function identically, what differs is the connector and the attachment bracket.

Also, Rockauto sells made-in-Japan Aisin VCVs (same thing - Aisin is also a Toyota VSV OEM) that can be adapted to whatever bracket you have. You have to swap the little black cylinder-filter over, as Toyota sells that separately (not in USA). Problem is the connector is different and you'll need to get the proper modern pigtail, 90980-11162 . Lots of aftermarket pigtail on ebay under that part #

 

[84Cressida]

I'll do that. Wouldn't hurt to have spare parts around.

Were you able to inquire with them?

 

[kody472]

Were you able to inquire with them?

Haven't had the chance, but plan to this week.

 

[kody472]

Haven't had the chance, but plan to this week.

Were you able to inquire with them?

I checked with the dealership a few weeks ago. There were 2 left in the states and one was at a Lexus dealership. They wanted over $400 for it, so i went the @Spike Strip route and ordered the Rock Auto Aisin VSV and Ebay pigtail route. Below is a screenshot form the Toyota Parts website.

 

[84Cressida]

I checked with the dealership a few weeks ago. There were 2 left in the states and one was at a Lexus dealership. They wanted over $400 for it, so i went the @Spike Strip route and ordered the Rock Auto Aisin VSV and Ebay pigtail route. Below is a screenshot form the Toyota Parts website.
View attachment 3964028

It was $44 MSRP before. I don’t know what happened. Several magnet valves shot up in price for no reason.

 

[kody472]

Alright. So I replaced the VSV along with the pigtail. I also replaced the vacuum hose going to the booster because it was cracked (green arrow in 1st pic). The engine still wants to surge as the rod from the pot on the carb goes on and off continuously.

I took the hose off the top of the VSV and attached it to the pot and the engine idled right up (green arrow in 2nd pic). That should say the pot is good and vacuum should be sufficient? I also used a test light to make sure the VSV was staying powered on and it is.

I also temporarily tested the vacuum ports with new hose with no change. I would assume my vacuum lines are ok then?

What else could be causing this? I’m assuming this engine is desmogged correctly. I’m having a hard time reading the guide.

 

[kody472]

Still racking my head on this. Any ideas why it surges with when the valve kicks on? I know the valve keeps toggling on and off, but I would think it’s supposed to hold a constant RPM speed? Is this correct?

 

[Spike Strip]

Does the valve toggle on and off with 12 volts applied directly to it?

 

[kody472]

Does the valve toggle on and off with 12 volts applied directly to it?

Yes. Egn off, ign on. Press the blue AC button and it clicks on. Push it again, and it clicks off.

Is there some sort of carb adjustment that needs to made? Would this have anything to do with the AC amplifier?

 

[Spike Strip]

I don't exactly understand what you're experiencing. The Idle up will cycle on and off so the A/C system doesn't freeze.

The function of the A/C Amplifier is to take temp and RPM data and cycle the compressor (and thus, idle up) so the evap doesn't freeze up. There are adjustments that can be made on the amplifier. If it's cycling too often, there are adjustments that can be made. (see link below)

Yes, there is an 'Idle Up' adjustment on carb, on the side where the idle up dashpot is. Procedure is in the 2F engine FSM, to set the Idle speed when the 'Idle up' is activated.

This thread shows it pretty well:

Thread 'The A/C Amp Thread'

May 2, 2015

This thread is all about FJ60/FJ62 A/C amplifiers. You know, that little black box that mounts on the evaporator case behind the glove box. There are plenty of other threads concerning A/C amps and I thought about adding to those, but in the end decided that the information here breaks enough new ground that it deserves a dedicated thread.

There are details here about the A/C amps for the FJ60 (p/n 88650-60020) and the FJ62 (p/n 88650-90A03) . Both are fairly similar and designed to perform three functions:
1) prevent the compressor from engaging during engine start-up or at low idle...

• TrickyT
• Replies: 138
• Forum: 60-Series Wagons

• 

 

[kody472]

I don't exactly understand what you're experiencing. The Idle up will cycle on and off so the A/C system doesn't freeze.

The function of the A/C Amplifier is to take temp and RPM data and cycle the compressor (and thus, idle up) so the evap doesn't freeze up. There are adjustments that can be made on the amplifier. If it's cycling too often, there are adjustments that can be made. (see link below)

Yes, there is an 'Idle Up' adjustment on carb, on the side where the idle up dashpot is. Procedure is in the 2F engine FSM, to set the Idle speed when the 'Idle up' is activated.

This thread shows it pretty well:

Thread 'The A/C Amp Thread'

May 2, 2015

This thread is all about FJ60/FJ62 A/C amplifiers. You know, that little black box that mounts on the evaporator case behind the glove box. There are plenty of other threads concerning A/C amps and I thought about adding to those, but in the end decided that the information here breaks enough new ground that it deserves a dedicated thread.

There are details here about the A/C amps for the FJ60 (p/n 88650-60020) and the FJ62 (p/n 88650-90A03) . Both are fairly similar and designed to perform three functions:
1) prevent the compressor from engaging during engine start-up or at low idle...

• TrickyT
• Replies: 138
• Forum: 60-Series Wagons

• 

I'll try to upload a video this evening showing what it's doing. From what I can tell from your reply and the post linked, it is definitely cycling way to often. It's probably every second it cycles, almost like I have a big loping cam.

 

[kody472]

I don't exactly understand what you're experiencing. The Idle up will cycle on and off so the A/C system doesn't freeze.

The function of the A/C Amplifier is to take temp and RPM data and cycle the compressor (and thus, idle up) so the evap doesn't freeze up. There are adjustments that can be made on the amplifier. If it's cycling too often, there are adjustments that can be made. (see link below)

Yes, there is an 'Idle Up' adjustment on carb, on the side where the idle up dashpot is. Procedure is in the 2F engine FSM, to set the Idle speed when the 'Idle up' is activated.

This thread shows it pretty well:

Thread 'The A/C Amp Thread'

May 2, 2015

This thread is all about FJ60/FJ62 A/C amplifiers. You know, that little black box that mounts on the evaporator case behind the glove box. There are plenty of other threads concerning A/C amps and I thought about adding to those, but in the end decided that the information here breaks enough new ground that it deserves a dedicated thread.

There are details here about the A/C amps for the FJ60 (p/n 88650-60020) and the FJ62 (p/n 88650-90A03) . Both are fairly similar and designed to perform three functions:
1) prevent the compressor from engaging during engine start-up or at low idle...

• TrickyT
• Replies: 138
• Forum: 60-Series Wagons

• 

Here’s a video.

Is this normal? I wouldn’t think so, but I could be wrong.