Question on operation of EVAP Canister Purge valve/Solenoid - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Closed Thread
 
 
 
Thread Tools Search this Thread
Old 04-13-2008, 05:24 PM   #1
reb
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Jan 2008
Location: Long Island, NY
Posts: 79
Thanks: 0
Thanked 0 Times in 0 Posts
reb is on a distinguished road
Default Question on operation of EVAP Canister Purge valve/Solenoid

The purge valve/solenoid on top of the Charcoal canister is in the closed position when fed voltage. Its not clanging open/closed like the vent solenoid at the valve cover.

If you apply and remove voltage (plug/unplug connector) the valve opens and closes as its supposed to.


Why is it not opening and closing as normal. Is the PCM sending it a signal to remain closed. Or is the valve gone bad.

In the closed position, its pulling vacuum on my gas tank.
reb is offline  
Old 04-13-2008, 05:44 PM   #2
reb
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Jan 2008
Location: Long Island, NY
Posts: 79
Thanks: 0
Thanked 0 Times in 0 Posts
reb is on a distinguished road
Default

(The purge valve opens (vent valve closed) to apply slight vacum in fuel tank. The fuel tank vapors are pulled from fuel tank through the evap canister into the intake. This routine is run by the PCM to basically check the integrity of the Evap System. Normally the purge valve is shut, the vent valve is open.)



This post says its normal for the canister purge valve shut and the vent valve open.


So why am I getting so much vacuum on the gas tank to deform its shape??
reb is offline  
Old 04-13-2008, 05:58 PM   #3
Senior Member
Posts like a Corvette
 
Join Date: Feb 2007
Location: Sanford Michigan
Posts: 1,200
Thanks: 0
Thanked 0 Times in 0 Posts
crash93ssei is on a distinguished road
Default

Please continue in your other topic you have going. Someone will chime in soon with more knowledge of the EVAP system, just please have patience

http://www.bonnevilleclub.com/forum/...ic.php?t=96934

Locking this one.
crash93ssei is offline  
 
 
Closed Thread

Related Topics
Thread Thread Starter Forum Replies Last Post
Canister purge solenoid=help Twinpilot Oldsmobile 10 11-30-2014 08:46 AM
OEM Part number for Tube Evaporator Canister to Purge Valve GunsOfNavarone 2000-2005 5 04-02-2013 07:08 PM
Purge valve solenoid or egr valve? SEXI SADI GMC/Chevrolet Truck/SUV 5 03-28-2012 12:18 PM
vapor canister purge valve vac line 01 Bonny krank 2000-2005 1 09-02-2011 08:06 AM
P0449 EVAP purge/vent solenoid circuit condition jbmark33 2000-2005 4 05-24-2007 01:30 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 01:05 AM.


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.