Hey, did the Purge Valve problem cause the "large/small evaporative
control system leak" check engine light? I've had that occasionally,
but haven't gotten it checked out.
It's funny how some of the problems are the same! I've had two of your
issues; I wonder if the 3rd is the same?
On my 2001 elantra, between when I bought it at 68k and 105k now, I've
had:
1) Power Door Locks don't work (I just replaced the fuse with a
slightly higher rated one; though after reading this I'll have to look
at the door harness corrosion thing)
2) Alarm sounds at random intervals - A switch on hood doesn't
register that the hood is closed, probably because the hood is a bit
bent there. I stuck a rubber stopper on the switch so that it will
close properly -- then again maybe that bent the hood
3) Check engine light re: Evaporative system, large leak
4) Silent computer error code: Transmission Position Sensor bad. I
bought a new one, but have been too lazy to put it on.
5) Coolant boiled over, from a faulty thermostat. This lead to:
6) Radiator Leak. Had to get that replaced.
7) Bad Transmission output sensor; I replaced that (an easy job,
thankfully)
8) Check engine light re: Evaporative system, small leak -- no doubt
the same thing as above, but again... too lazy to get it fixed
9) Check engine light re: Catalyst efficiency low; When I also got a
light about the O2 sensor being bad, I replaced that, which fixed this
as well.
10) Bad Transmission input speed sensor, replaced, also an easy job.
Then there's the newest issue: Sometimes the TCM sets a code that my
OBD-II reader can't read. Gonna have to get that checked out.
These are apart from the things that are probably blamable on my bad
driving:
A bent tie rod, axle, and other suspension components after driving up
a curb really badly (this was my first car ever, it took some abuse --
but fortunately never shared that abuse with other cars).
Tires that wore unevenly, and to the belt before I noticed, because of
said damage, that left the car out of alignment for almost a year.
And also apart from regular maintenance that I'm curious about -- I
had to replace the same headlight bulb twice in a row within a year.
And of course that mechanic that could have messed up my car by
putting Dexron fluid in my transmission.
*sigh*
But when I'm not working on it, I do like my car.
jmh_ottawa - 16 Aug 2007 17:20 GMT
Yes that's the problem... the only symptom i have is that it's damn slow to
fill the gas tank.
hyundaitech - 16 Aug 2007 22:36 GMT
Failures with the purge valve won't cause problems filling the tank. The
purge valve is between the engine and the fuel tank. You're looking for a
problem-- to be specific, a blockage-- between the fuel tank and
atmosphere.
jmh_ottawa - 21 Aug 2007 02:47 GMT
The code is P0441 i'm supposed to take this in tomorrow so i'll likely
inquire about it further to see what their take is on it.
jmh_ottawa - 21 Aug 2007 16:44 GMT
Just got some more info from my dealer:
The OBD codes i'm getting are
P0441 - Evaporative Emission Control System Incorrect Purge Flow
P0445 - EVAP Emission Control System Purge Control Valve Circuit Shorted
Initially i opted for a smoke test to see wher ethe leak may be but that
was prior to checking the codes. It seems the two are linked and getting
the purge control valve changed may be the best starting point.
It seems unlikely that this would cause gassing up to be slow but at least
it eliminates it as an issue and further testing can be done fro mthat
point on. I did mention that perahps the Vacuum Switching Valve may be the
problem.
The saga continues...
hyundaitech - 16 Aug 2007 22:29 GMT
1. Blown door lock fuses tend to be issues with the door lock actuators,
not the wiring. The corrosion of the wiring connectors tends to lead to
more odd and erratic issues due to continuity between unrelated circuits.
2. You're on the right track here. If you have more trouble than it's
worth, you can just unplug the hood switch. The alarm system will then
think the hood is always shut.
3,8. Large leak failures (P0455) are rarely due to the purge valve. If
the purge valve is indeed the cause, the purge valve will be stuck shut
(the normal position when not energized) even when energized. This code
means that the engine is not able to pull a vacuum on the vapor system.
More frequent causes are fuel in the vapor lines or the canister, or an
actual vapor leak somewhere (including an improperly installed or sealed
fuel cap).
If you can retrieve the actual code number that sets in the TCM, I can
tell you what it means.