P0455 Evaporative Emission (EVAP) System Large Leak
#21
Well here is a thought: they changed the design of the electrical connector in, I think 2009 or 2010. I don't remember your year. If you purchase the new valve the wiring may be different. I know for sure that when you replace it on a 2008 you have to buy a pigtail adapter.
#22
Yes, I had to purchase the pigtail adapter, which btw was almost the same price as the solenoid!! What's up with that?? Anyway, I highly doubt that is the issue. I'm sure they tested the design of the pigtail. I have a call into my mechanic and hopefully he'll be able to test the solenoids to make sure they are functioning correctly.
#23
It is always possible that the connections are bad or the part is bad.
IIRC, They fail open. The signal is normally on (valve closed) then commanded off (valve open). Somebody had a broken wire near the axle.
IIRC, They fail open. The signal is normally on (valve closed) then commanded off (valve open). Somebody had a broken wire near the axle.
#24
P0455 tried everything in this post, need help
I replaced gas cap and reset,
Vapor vent canister solenoid, and reset,
and purge valve and p0455 won't clear.
I did over fill the gas tank
Can I replace anything else? Maybe the vapor vent canister?
I'm
Vapor vent canister solenoid, and reset,
and purge valve and p0455 won't clear.
I did over fill the gas tank
Can I replace anything else? Maybe the vapor vent canister?
I'm
#26
Un:nU
Thx blue
#27
Took my HHr to my buddy's new shop to look at a few issues. CEL light on with a P0455 code.(large evap leak). He did a smoke test on it and found it leaking at the evap canister where the purge valve(not sure if right part name) connects(behind rear axle). Pulled apart and found that the o ring(s) were missing. He didn't have any o rings that were thick enough but two worked. No CEL. WOO-HOO Just something else to look at before replacing parts.
#28
I don’t see the seal in your photos, perhaps a PO replaced the valve and forgot to transfer the seal.
See the seal on the canister side (left) port above my thumb ? That usually gets tossed with the old part . Careful removing it , at this age it’ll be brittle.
See the seal on the canister side (left) port above my thumb ? That usually gets tossed with the old part . Careful removing it , at this age it’ll be brittle.
#29
the old one didn't have that. Guessing it was already replaced and they didn't save it