Notices
86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Need help identifying the function of these VSV's

Old 04-19-2019, 02:35 PM
  #1  
Registered User
Thread Starter
 
jordanbailey's Avatar
 
Join Date: Sep 2018
Location: Canada
Posts: 21
Received 0 Likes on 0 Posts
Need help identifying the function of these VSV's

Hello everyone.

Does anyone know what function these valves (Red and Blue) serve?

https://imgur.com/a/ooCKaQT

They are located on the passenger side wall of the engine compartment (1992 Pickup 3vze), right behind the fuse box. I thought that they were part of the EGR system, but despite being connected via vacuum line to the other valves of the EGR system, they aren't listed on any diagram of the EGR system.

Any help is appreciated, thanks!
jordanbailey is offline  
Old 04-19-2019, 02:43 PM
  #2  
Registered User
 
Join Date: Sep 2007
Location: San Francisco East Bay
Posts: 6,685
Likes: 0
Received 126 Likes on 111 Posts
ADD (automatic differential disconnect). http://web.archive.org/web/201204242...26addcontr.pdf

Your's is plumbed slightly different than mine, but should work. The other end of the blue/white check valve should go directly to the "gas filter" (3 outlet fitting on plenum), possibly shared with cruise control.

These VSVs do NOT connect to anything in the EGR system.

Last edited by scope103; 04-19-2019 at 02:46 PM.
scope103 is offline  
The following users liked this post:
jordanbailey (04-19-2019)
Old 04-19-2019, 02:54 PM
  #3  
Registered User
Thread Starter
 
jordanbailey's Avatar
 
Join Date: Sep 2018
Location: Canada
Posts: 21
Received 0 Likes on 0 Posts
Thanks, Scope!

Believe it or not, I was thinking about reaching out to you directly about an issue I've been dealing with. I've seen you as an active voice on EGR related threads and am chasing an issue with mine.

Last edited by jordanbailey; 04-19-2019 at 03:10 PM.
jordanbailey is offline  
Old 04-19-2019, 04:00 PM
  #4  
Registered User
 
Join Date: Sep 2007
Location: San Francisco East Bay
Posts: 6,685
Likes: 0
Received 126 Likes on 111 Posts
Originally Posted by jordanbailey View Post
... I was thinking about reaching out to you directly about an issue I've been dealing with. ...
Not to be unnecessarily unfriendly, but most questions like that don't benefit from a PM. Just start a thread and post it here. If I don't know the answer, there are lots of people who do! (And if I DO know the answer, it might benefit other people if the answer is posted in the forum.)
scope103 is offline  
Old 04-19-2019, 06:31 PM
  #5  
Registered User
Thread Starter
 
jordanbailey's Avatar
 
Join Date: Sep 2018
Location: Canada
Posts: 21
Received 0 Likes on 0 Posts
Yeah, no worries. It's a good point.
jordanbailey is offline  
Old 04-22-2019, 01:02 AM
  #6  
Registered User
 
Join Date: Dec 2018
Posts: 14
Likes: 0
Received 0 Likes on 0 Posts
Vsv

On my 91 the red is fuel pressure regulator valve green is EGR and blue was pair! I did full EGR/pair delete and hard line delete so I only use the Red now!
snoWStomper85 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
yamaha73
86-95 Trucks & 4Runners
10
06-18-2015 06:19 PM
SeeBeeAre
86-95 Trucks & 4Runners
4
09-23-2012 08:43 AM
SeeBeeAre
86-95 Trucks & 4Runners
0
09-17-2012 03:38 PM
flrunner
86-95 Trucks & 4Runners
1
01-14-2010 05:41 PM
UKMyers
86-95 Trucks & 4Runners
9
02-08-2007 08:15 AM


Thread Tools
Search this Thread
Quick Reply: Need help identifying the function of these VSV's


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: