Replacing Vent Valve Solenoid & Purge Valve Solenoid (EVAP Valve) 2005 GMC Yukon
When you get a check engine light, your parts store can test it with a
little electronic device - ask for the check engine light tester.
They go by many names, but look for EVAP Valve or Vent Valve/solenoid &
Purge Valve/solenoid. The one in the rear of the car, near the gas tank, is
known as the "Vent Valve Solenoid Canister." The one in the engine
compartment is called a " Purge Valve Solenoid."
Replacing the one in the engine compartment did the trick. I'd start by
replacing that one first then test it.
$25.97 Vent Valve Canister (fuel tank one)
$35.72 Purge Valve (engine compartment one)
GM Dealer quote: $281.00
I saved $219.31
GM EVAP Vent Solenoid Testing
2002 Chevy Silverado 4.8L with a P0449 EVAP Vent Solenoid trouble code. For
more info. see www.autocomputerstroubleshooting.com
Automotive Evaporative Emissions - Part One
From www.autofixworld.com: Part One of a two-part video describes how
onboard monitors test vehicle fuel containment systems for fuel vapor
leaks. Three types are discussed: pressure test; vacuum test; and natural
vacuum leak detection.
EVAP System Operation
EVAP System Operation
Amazon Printed Books
Amazon Kindle Edition
Explain the operation of the EVAP system. The EVAP system is in charge of
recovering the excess fuel vapors and re-introducing them into the engine.
It isn't just an emission system. If it malfunctions is also has a huge
effect on engine performance and certain components operation will be
cancelled by the ECM if the EVAP system fails. Learn how they operate here
and how to test. The OBD-II scanner or Scan-1 is used to diagnose these
systems and evaluate the process. See how it works.
Amazon Printed-Books & Kindle:
Google Play Android APPs:
Amazon Video DVDs:
Barnes & Noble Nook:
Apple iTunes iPad:
Meet the Purge (Evap) Solenoid
Q&A about the fuel vapor system, purge solenoid valve, and charcoal
canister. This video applies to a wide range of vehicles. Re-edited and
uploaded with better information.
2001 Chevrolet Silverado Fuel Pump Replacement
In this video we'll replace the fuel pump in a 2001 Silverado. These
instructions will be similar for all Chevy and GMC Trucks and full size
SUV's from 1999 - 2006. Click the link above to find the exact fuel pump we
used in this video.
Wells EVAP Training with Sgt. Tech. P0440, P0441, P0442 etc.
http://www.wellsve.com/ This video demonstrates how a typical EVAP system
functions. P0440, P0441, P0442, P0456, P0457, P0455, P0443, P0446, P0449,
P0450, P0451, P0452, P0453, P0496 trouble codes with explanations and
possible causes. Why Wells fuel tank pressure sensors are rated the best.
"The information presented in this program is based on a specific
diagnostic case and might not directly apply to the vehicle you are
repairing. We do not represent or warrant that the information presented
is complete or error free. Please take all safety precautions. We
disclaim any and all liability for losses, injuries or damages in
connection with your repair."
Clear check engine light for less than 5 dollars
More Tutorials on my CHANNEL: http://www.youtube.com/user/moccina
*This video is an EXPERIMENT I wanted to try on my car, and is for
INFORMATIONAL purposes ONLY. This fix is for off-road use. The content
shown in this video is not intended to encourage emissions test cheating.
I enjoy the process of testing theory because you always learn something
new, regardless of the outcome.
Using a spark plug defouler kit, I install a "buffer" in between the
downstream oxygen sensor and the catalytic converter. Quite often,
frustrated car owners get the P0420 code for reasons other than a bad cat.
I have heard of people getting the code just because they removed the
converter and reinstalled it. It can also happen if you run your vehicle
out of gas etc... etc...
It is also common for car owners to get the P0420 code, replace the
converter, and both o2 sensors-- only to have the code come back after 1000
miles or so. This can be a very frustrating, time consuming and of
course-- expensive venture. Here is one way to resolve the issue. Good
luck and have fun!
Check Engine Light Diag EVAP Codes
This is a video of a 2006 GMC Sierra that had a check engine light & some
evaporative emissions codes. I show how to diagnose the problem with a
scan tool and the upgraded parts required to repair it. The codes in the
PCM were P0449 & P0455. I repaired it with a procedure in GM TSB
02-06-04-0374 that was to repair a restricted EVAP vent path &/or code(s)
P0446 / P0442. This problem could also result in a fuel tank that is hard
VR6 Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80) - 720p How to DIY
This video shows how to remove and install an EVAP Canister Purge Regulator
Valve (N80) on a 12v AAA MKIII VR6 (1991-1999.5). There are small
differences with the 12v and 24v MKIV VR6 (1999.5 +) but unless someone
gives me one, I can't make a specific video ;)
I had the following DTC using Vag-Com:
16824 - EVAP Emission Control Sys: Malfunction
P0440 - 35-00 - -
N80 VW Part #: 077 133 517 C
Replacing your N80 is a common fix for the above fault. If that doesn't
work, you can also replace your gas cap and check your lines for leaks.
Some VR6s do not have an N80 Valve (so I'm told).
Should be the same procedure for all VR6 MK3 Volkswagens (Golf, Jetta,
Corrado, Passat, Eurovan, Audi, Polo, Cabriolet, Bora, Vento, Typ 1H A3,
How To Find A Vacuum Leak - EricTheCarGuy
Vacuum leaks are one of the biggest causes of engine performance problems.
This video is pretty straight forward in it's approach to finding a vacuum
leak. On thing I might mention is that not all vacuum leaks are at the
engine. Some HVAC systems run on engine vacuum and can cause a leak under
the dash in some cases. I've even seen vacuum operated door locks. Just be
sure to be careful spraying flammable stuff on a hot engine, you don't want
to take one problem and make it a whole lot worse. You can also use a spray
bottle with water to do this same test. It may not be as effective, but you
don't have to worry about spraying a flammable substance on a hot engine.
For more information on diagnosing engine performance issues, check out
this article I wrote.
The best place for answers to your automotive questions:
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Fuel Vapor Canister Solenoid
A 101 on the sophisticated computer purge valve, the component of the car
which is used for its vapor recovery systems.