EVAP VSV: Number of nipples - YotaTech Forums

Notices
3.4 Swaps The 3.4 V6 Toyota engine

EVAP VSV: Number of nipples

Reply

Old 06-30-2011, 03:55 PM
  #1  
Registered User
Thread Starter
 
Join Date: Apr 2011
Posts: 36
Thanks: 0
Thanked 0 Times in 0 Posts
EVAP VSV: Number of nipples

Any idea why my Vapor pressure sensor VSV would only have two nipples? as I was putting the rest of the EVAP together I ran into a wall.

I attached a few photos. The first is of the diagram I was following to set up my EVAP(96' evap setup). The second is of the location I grabbed the VSV from the intake manifold.

Did they change the EVAP system after 2000-01?

tacovr6 is offline  
Reply With Quote
Old 06-30-2011, 04:33 PM
  #2  
Registered User
 
MudHippy's Avatar
 
Join Date: Jan 2007
Posts: 6,106
Thanks: 0
Thanked 12 Times in 9 Posts
Originally Posted by tacovr6 View Post
Any idea why my Vapor pressure sensor VSV would only have two nipples?
I'm at a bit of a loss as to how to explain it. But having replaced one like that on my sister's Mazda, I can assume it's probably similar in design. From what I understand of how it functioned, I'm having a harder time trying to figure out why one would have three nipples honestly.

Why two? That's all that's needed to allow the sensor to detect vapor pressure in the fuel tank, which is the whole purpose for it(I thought). That VSV is an electronically-controlled vacuum switching valve that allows vapor pressure from the fuel tank to travel in one hose and out the other hose to the sensor.

Why three? Maybe it has something to do with pressure in the canistor too? You tell me...I ain't that good at trying to guess what the OBDII does. Time to download that manual I suppose...

Oh, almost forgot. Just cap the line going to it that doesn't go to the fuel tank or sensor

Last edited by MudHippy; 06-30-2011 at 04:39 PM.
MudHippy is offline  
Reply With Quote
Old 06-30-2011, 05:08 PM
  #3  
Registered User
Thread Starter
 
Join Date: Apr 2011
Posts: 36
Thanks: 0
Thanked 0 Times in 0 Posts
interesting thought. capping it might work. I'll have to see if it throws any codes. Anyone else want to chime in?
tacovr6 is offline  
Reply With Quote
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ZGjethro
95.5-2004 Tacomas & 96-2002 4Runners
5
06-07-2017 11:04 PM
White Stripe
95.5-2004 Tacomas & 96-2002 4Runners
4
10-06-2015 10:47 AM
justdifferentials
Just Differentials
3
09-29-2015 05:30 PM
irv
86-95 Trucks & 4Runners
7
09-29-2015 01:04 PM
elaketiger
86-95 Trucks & 4Runners
5
09-14-2015 09:58 AM


Thread Tools
Search this Thread
Quick Reply: EVAP VSV: Number of nipples


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

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: