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From: BillyG on 12 Aug 2008 22:02
On Aug 12, 9:16 am, "Patrick C" <m...(a)privacy.net> wrote:
> Yes, I spent all of about $11 so far compared to the $80+ cost of the valve
> but I enjoy trying to repair things myself and call outs from autozone for
> the error code did mention gas cap, hose leaks, as well as the valve and
> canister.

My check engine light has not come back since clearing the P0441 code
5 days ago. I'd read overfilling tank can lead to this code that is
something I frequently do so will run my car towards empty before
refueling as long as the light stays off. I realize most of the time
problems are more complicated but hopefully mine will prove to be more
basic.
From: Jeff Strickland on 12 Aug 2008 22:32

"BillyG" <curiousbill2006(a)aol.com> wrote in message
news:3cf1d71c-aca0-4d80-81a4-8108834bb533(a)k30g2000hse.googlegroups.com...
On Aug 12, 9:16 am, "Patrick C" <m...(a)privacy.net> wrote:
> Yes, I spent all of about $11 so far compared to the $80+ cost of the
> valve
> but I enjoy trying to repair things myself and call outs from autozone for
> the error code did mention gas cap, hose leaks, as well as the valve and
> canister.

My check engine light has not come back since clearing the P0441 code
5 days ago. I'd read overfilling tank can lead to this code that is
something I frequently do so will run my car towards empty before
refueling as long as the light stays off. I realize most of the time
problems are more complicated but hopefully mine will prove to be more
basic.

<JS>
The Evaporative Emissions Control System includes the gas tank, filler
hoses, and the plumbing that directs unused fuel and gasoline fumes back to
the gas tank.

ANY Evap System code should first be isolated away from the gas cap. Since
you and your significant other spend in inordinate amount of time opening
and closing the gas tank via the gas cap, AND the system is delicately
balanced between a small pressure and a small vacuum AND the balance can be
easily disrupted by a leak caused by the gas cap, AND this disruption can
show up pretty much anywhere in the system, I always suggest isolating the
User Errors from the stuff that can acutally break. This system is not a
safety of flight item, so you can easily afford to adopt a wait-and-see
attitude.

Surely, there are lots of parts in the system that can fail but these all
cost money to fix (well, a vacuum line can break off but this is a rare
event, and if the gas cap is sealed well then the broken vac line will show
up while you wait). The gas cap is free, if somebody failed to securely
tighten it. I would not buy a new gas cap, but I'd wait a week or two to see
if the gas cap being securely tightened will fix the problem.

After that, I'd do what Ray says.







From: johngdole on 12 Aug 2008 23:39
The purge valve vacuum switching valve (VSV) is located near the air
filter housing. You'll see a rubber hose from it going to the throttle
body.

If you run the engine and disconnect the canister side of the VSV,
when the valve operates you'll hear "loud sucking sounds". Well, if it
doesn't "suck" (ie little vacuum) then the valve is sticking.

You can gently clean and lightly lube the VSV by straightening the
small metal tabs that hold the port cap. Just be careful if you break
them you'll need a new VSV.

Always exercise caution when working on fuel related systems.




On Aug 12, 7:02 pm, BillyG <curiousbill2...(a)aol.com> wrote:
> My check engine light has not come back since clearing the P0441 code
> 5 days ago.  I'd read overfilling tank can lead to this code that is
> something I frequently do so will run my car towards empty before
> refueling as long as the light stays off.  I realize most of the time
> problems are more complicated but hopefully mine will prove to be more
> basic.

From: Patrick C on 13 Aug 2008 19:21
My problem has seemed to have gone away for some reason, I'll just have to
wait and see.

From: Ray O on 14 Aug 2008 01:04

"Patrick C" <me(a)privacy.net> wrote in message
news:JZJok.22907$Ri.14526(a)flpi146.ffdc.sbc.com...
> My problem has seemed to have gone away for some reason, I'll just have to
> wait and see.

I believe that particular trouble code has two-trip detection logic, so if
the problem is absent for 2 consecutive trips, the malfunction indicator
light (MIL) will extinguish, and if it is present for two consecutive trips,
the MIL will illuminate again.

Tightening the gas cap will not make that particular code go away, so
unfortunately, it will probably re-appear.
--

Ray O
(correct punctuation to reply)


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