Question about 1999 Chevrolet Monte Carlo

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Where is the vapor canister vent solenoid on my 1999 Monte Carlo ls?

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It is located under the vehicle near the fuel tank behind the driver side tires wheel house.

Posted on Mar 21, 2014

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: OBD code P0499, P0499 NVLD Canister Vent Valve Solenoid, Cause?

its above ur fuel tank from what i kno of but it could be ur canister or just a short in the wire to ur solenoid

Posted on Jan 17, 2009

  • 37 Answers

SOURCE: HAVE A TROUBLESHOOTING MESSAGE PO446

DTC P0446 Evaporative Emission (EVAP) Vent System Performance

The vehicle control module (VCM) monitors the performance of the evaporative emission (EVAP) system by applying a predetermined level of vacuum to the EVAP system and monitors the vacuum decay rate. The VCM sets this diagnostic trouble code (DTC) if the vacuum decay rate is more than a predetermined value. The VCM monitors the amount of vacuum and the amount of pressure in the EVAP system by monitoring the fuel tank pressure sensor. For this DTC, the VCM turns ON both the EVAP purge valve and the EVAP vent valve when the Conditions for Running the DTC are met. This applies an engine vacuum to a closed EVAP system. The VCM turns OFF both the EVAP purge valve and the EVAP vent valve when the system reaches a correct amount of vacuum. The EVAP system should quickly RELEASE the vacuum in the EVAP system with the EVAP purge valve OFF and the EVAP vent valve OFF (open). This test indicates a blocked or restricted EVAP vent path if the EVAP system fails to release the vacuum quickly enough.

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Posted on Dec 06, 2008

  • 99 Answers

SOURCE: I have a 1997 Monte

it is by the gas tank if you open the hood it should have an emission hose and vacumn hose routing diagram which can help you locate it.

Posted on Dec 16, 2010

tayjoejoe
  • 2194 Answers

SOURCE: 1999 monte carlo -"security" light

This is a common problem on GM vehicles. This link explains it and should help you out... http://vatspasslockpasskeysecurityhelp.yolasite.com/

Posted on Aug 14, 2011

  • 1 Answer

SOURCE: 1999 monte carlo LS won't stay running

my gage go from half to full when i fill uo

Posted on Sep 29, 2011

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Dec 19, 2015 | 2000 Chevrolet Impala

1 Answer

Engine light code p0455 chev monte carlo


Hello,The problem is that the EVAP system is not able to achieve or maintain vacuum during the diagnostic testThe control module tests the evaporative emission (EVAP) system for a large leak. The control module monitors the fuel tank pressure (FTP) sensor signal to determine the EVAP system vacuum level. When the conditions for running the test are met, the control module commands the EVAP canister purge solenoid valve OPEN and the EVAP canister vent solenoid valve CLOSED . This allows engine vacuum to enter the EVAP system. At a calibrated time, or vacuum level, the control module commands the EVAP canister purge solenoid valve closed, sealing the system, and monitors the FTP sensor input in order to determine the EVAP system vacuum level. If the system is unable to achieve the calibrated vacuum level, or the vacuum level decreases too rapidly, the PCM will set the code you now have.So, you either have a stuck open purge valve, a stuck open vent valve, a false reading fuel tank pressure sensor, or a cracked/broken EVAP line.

Sep 21, 2012 | 2004 Chevrolet Monte Carlo

2 Answers

1999 ford winstar v-6 3.8 l ! what is a canister vent solenoid, i got code #p1451 and where is it located


Did you check the block box connected to the vent solenoid? There's a hose that comes off it that appears to run nowhere, that's the fresh air vent. If it's blocked it won't allow air into the system which will set the trouble code. If that's clear, the vent solenoid itself is bad and needs to be replaced.

Sep 11, 2012 | Ford Cars & Trucks

1 Answer

I have a 1999 Monte that builds pressure in the gas tank and need help because it has pop two gas tanks why is it building pressure .


Back by your tank, there is a vapor canister with a vent valve on it. That valve is supposed to let vapor from the tank into the canister. Check to see if the valve is working. You can test it by connecting it directly to the battery with some jumper wires. Once in the canister, the vapors are opened to the engine vacuum for burning by the purge valve once the car is warmed up and on the road. If the vent valve is working, but pressure is still building, the problem can be the purge valve at the engine. You can tell this is the problem if the cannister is full of liquid gas. Normally, and depending on the failure mode, these failures would set the engine light. If the light is on, get a scan to see where the problem is. Please let me know if you have more questions, and thanks for using FixYa.

vent valve/canister:
jturcotte_522.jpg

Jun 16, 2011 | 1999 Chevrolet Monte Carlo

1 Answer

P0446 ford escort 98


This Pinpoint Test is intended to diagnose the following:
  • Canister vent (CV) solenoid (9F945) (electrical concern only)
  • Fuel filler cap (9030)
  • Fuel tank pressure (FTP) sensor (9C052)
  • EVAP canister tube (fuel tank to EVAP canister)(9A228)
  • Fuel canister purge outlet tube (EVAP canister to EVAP canister purge valve) (9D661)
  • EVAP return tube (EVAP canister purge valve to intake manifold) (9G271)
  • EVAP canister purge valve (9C915)
  • Vacuum source line (input port vacuum to intake manifold)
  • Harness circuits: CV, FLI, FTP, EVAP Canister Purge Valve, SIG RTN, vehicle power (VPWR), reference voltage (VREF) and power ground (PWR GND)
  • Powertrain control module (PCM) (12A650)
This Pinpoint Test is used as an assistance in diagnosing the following EVAP components:
  • EVAP canister and bracket assembly (9E857)
    • EVAP canister sleeve assembly (fitting)(9D925)
    • Canister vent (CV) solenoid - hose assembly (9F976 or 9K318)
    • EVAP canister (9D653)
    • Canister vent (CV) solenoid (9F945)(mechanical concern only)
  • Fill limit valve assembly (9A086)
  • Fuel filler pipe flapper valve (9B085)
  • Fuel filler pipe check valve (9189), assembly (9285)
  • Fuel tank filler pipe (9034)
  • Fuel tank assembly (with fuel vapor vent valve) (9K007)
  • Fuel tank assembly (without fuel vapor vent valve) (9002)
  • Fuel vapor control valve (9B190)
  • Fuel vapor vent valve (9B593)
  • Liquid/vapor fuel discriminator (9G332)
  • On-board refueling vapor recovery (ORVR) T - connector assembly (9S314)
Description For additional information on the Evaporative Emission (EVAP) System, refer to Section 1A .
For additional information on the Evaporative Emission System Monitor, refer to Section 1A .
Pinpoint Test Schematics Escort/Tracer (2V)
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May 28, 2011 | 1998 Ford Escort

2 Answers

I have a 2004 Monte Carlo. Have there been issues trying to fill the gas tank? I can't open up a gas nozzle as it stops like the tank is full. The gas just does not go down cleanly, backing up or...


You either have an obstruction in the filler tube or the vent tube on the filler is clogged so it is not allowing air to escape as the gas is going in.

Jan 08, 2011 | 2004 Chevrolet Monte Carlo

1 Answer

02 monte carlo- EVAP code. tried new gas cap & erase code, check engine light back on w same code. how can i diagnose the system?


hi there, you see todays cars are so emmision friendly that not even the vapors from your tank can be released into the atmosphere so what they have done is all your vapors are put into a charcoal canister to absorb the vapors and the next time you start the car it has a purge solenoid open and burn the vapors off. if you look around the intake youll see a hose with a green cap follow it back to the charcoal canister and while your doing that just check the hoses and the hoses around the canister to make sure there is no holes or cracks in them and then follow the hose from the canister to the gas tank. if every thing looks good then i would replace the purge solenoid.

Aug 28, 2008 | Chevrolet Monte Carlo Cars & Trucks

1 Answer

My taurus failed due to code p0442 ecap emiss ctl sys leak detected (small leak)


    Continuous Memory Diagnostic Trouble Code (DTC) P0442 indicates that a fuel vapor leak has been detected [as small as 0.10 cm (0.04 inch)] in the Evaporative Emission (EVAP) system.
    Note: Prior to performing the following diagnosis inspect the Canister Vent Solenoid (CV) for contamination. A situation may exist where contamination holds open the Canister Vent (CV) solenoid enough to set DTC P0442 and also plugs the port to atmosphere enough to keep system from being vented quickly.
    • After market parts and accessories nonconforming to the EVAP system specifications.
    • Damaged, cross threaded or loosely installed fuel filler cap.
    • Small holes or cuts in fuel vapor hoses/tubes (EVAP canister tube, EVAP canister outlet tube or EVAP return tube) in the EVAP system.
    • Loose fuel vapor hose/tube connections to EVAP system components.
    • EVAP system component [EVAP canister purge valve, fuel tank pressure (FTP) sensor, canister vent (CV) solenoid, fuel vapor control valve tube assembly or fuel vapor vent valve assembly] seals leaking.
    • CV solenoid partially open when commanded closed.
    • EVAP canister leaking.
  • Check for presence of fuel filler cap.
  • Verify that the CV solenoid is properly seated on the EVAP canister (if possible).
  • Visually inspect for cut or loose connections to fuel vapor hoses/tubes in following locations:
    • EVAP canister to EVAP canister purge valve.
    • EVAP canister to fuel vapor vent valve assembly.
    • fuel vapor control valve tube assembly to fuel tank (if applicable).

Jun 26, 2008 | 1997 Ford Taurus

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