Evap Vent Valve Filter
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green02crew
- Crew Elite
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I cleared the code and was going to get around to taking care of the problem, but... it hasn't come back recently. The only change I made was I stopped driving down a dirt road everyday. Strange? I think so.
2002 S-10 Crew Cab
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roadrunner
- Crew K Elite
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Not really. Perhaps vibration aggravated situation or dust getting under the little rubber disc valve in the evap filter/vent valve. Just speculation on possibilities.
2001 CC LS, pewter, stock, 4.3,Wait4meperformance, CFM throttle blade, Helix throttle body spacer, 4spd auto, 3button electric 4x4 shift, heavy duty factory suspension, Bilsteins, 1" rear wheel spacers, skid plates.
Re: Evap Vent Valve Filter
Ok, 2 threads from the dead in one week!
2005 2 door blazer
110 000kms
p0449 code
Here is what I have done so far. I reset the code and it came back after 2 starts, twice. Tonight I checked voltage at the connector for the solinoid. 0 volts with no key and 12 volts with the key turned to the first detent and 14.4 with the truck running. I then used a nine volt battery to force the solinoid and I couldn't hear or feel anything. I also tried turning the key on then connect the connector and I still couldnt feel a thing. On line I have read that some scan tools can force the solinoid, I don't have this luxury. So it would seem as though the solinoid has failed.
After that lengthy story, I guess what I am asking is; Have I missed anything?
TIA,
Paul.
2005 2 door blazer
110 000kms
p0449 code
Here is what I have done so far. I reset the code and it came back after 2 starts, twice. Tonight I checked voltage at the connector for the solinoid. 0 volts with no key and 12 volts with the key turned to the first detent and 14.4 with the truck running. I then used a nine volt battery to force the solinoid and I couldn't hear or feel anything. I also tried turning the key on then connect the connector and I still couldnt feel a thing. On line I have read that some scan tools can force the solinoid, I don't have this luxury. So it would seem as though the solinoid has failed.
After that lengthy story, I guess what I am asking is; Have I missed anything?
TIA,
Paul.
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HenryJ
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Re: Evap Vent Valve Filter
Next trick is to remove it and clean the valve. Then apply vacuum and use a 9 volt battery to test it.
I suspect you are right and it has indeed failed. Replace it with the newer model.
That one has a larger filter and should be better.
I suspect you are right and it has indeed failed. Replace it with the newer model.
That one has a larger filter and should be better.
"Speed doesn't kill, suddenly becoming stationary does." - Richard Hammond
"Speed is just a matter of Money - How fast do YOU want to go?"-Mechanic from Mad Max-
If at first you don't succeed - Don't take up Skydiving! - ThunderII KE7CSK
Re: Evap Vent Valve Filter
3 more questions;
How do I apply vacuum to test it?
Is the round canister the newer version?
What is the aprox. price of the unit?
How do I apply vacuum to test it?
Is the round canister the newer version?
What is the aprox. price of the unit?
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HenryJ
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Re: Evap Vent Valve Filter
Suck on it.blaz wrote:How do I apply vacuum to test it?
YesIs the round canister the newer version?
$15-$25 at your local dealer. Rockauto has it for $15.41What is the aprox. price of the unit?
"Speed doesn't kill, suddenly becoming stationary does." - Richard Hammond
"Speed is just a matter of Money - How fast do YOU want to go?"-Mechanic from Mad Max-
If at first you don't succeed - Don't take up Skydiving! - ThunderII KE7CSK
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stukapilot
- Enthusiast
- Posts: 39
- Joined: Wed Feb 23, 2011 9:14 pm
- Location: Cold Bay, Alaska
Re: Evap Vent Valve Filter
I'm having the 446 code also, how do I get the hose off the solenoid? That white plastic clip is giving me trouble!
Re: Evap Vent Valve Filter
Ok, update time;
Good news;
No more engine light!
Bad news;
In Canada the part is closer to the $50 mark.
Helpful hints;
After you check voltage and the connector is disconnected check the resistance of the solinoid. The new one measured 20 ohms, the old one measured 1.5 megohms. This is a quick easy check and will let you know whether it is worth cleaning or not. In my case not!
Good news;
No more engine light!
Bad news;
In Canada the part is closer to the $50 mark.
Helpful hints;
After you check voltage and the connector is disconnected check the resistance of the solinoid. The new one measured 20 ohms, the old one measured 1.5 megohms. This is a quick easy check and will let you know whether it is worth cleaning or not. In my case not!
Re: Evap Vent Valve Filter
Sorry, I didn't have a white plastic clip. It was black and I just had to squeeze the sides of the clip in then pull it off. Hope it helps.stukapilot wrote:I'm having the 446 code also, how do I get the hose off the solenoid? That white plastic clip is giving me trouble!