EVAP System Problems - Toyota Celica Forum
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#1 (permalink) Old 02-24-2012, 10:34 AM
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Default EVAP System Problems

I have a 2004 Celica Gt. 1.8L. I recently plugged in my computer to figure out my Check Engine Light issues. The codes that popped are P0441 P0442 P0446.

I've been trying to fix it for a little bit now, replaced some clamps on some air lines tied to the vsv valve and I stopped adding extra fuel when I fill up.

I'm completely confused. I need help. Its getting annoying and I'm trying to get at the heart of the problem.
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#2 (permalink) Old 02-24-2012, 11:33 AM
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there are 2 VSVs in the EVAP system. the first one has 2 nipples right next to each other. the first hose comes off the intake manifold and the other runs along the battery to a hard line at the firewall. the second VSV is located down by the fuse box. it has 2 nipples on it at 90 degrees to each other. one is connected to a hard line next to the frame and the other connects to your intake box

2001 Celica GT-S Turbo 2ZZ-GTE
1997 Celica GT S/C 1MZ-FZE
1997 Supra Turbo 2JZ-GTE
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All boosted = good!
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#3 (permalink) Old 02-27-2012, 07:43 PM
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Yah papers i got from auto zone said it could be;

Leak in EVAP system, Evap Line Leakage
Blocked Evap Purge Line
Faulty purge VSV
Faulty Fuel Cap
Pump module failure
Canister Faulty

And then these electrical issues I guess with it

Open or short Circuit Condition
Poor electrical connection
Faulty CCV vent control solenoid



The fuel cap, I know is fine, I believe it might be reading that cause of the leak, and the leak I think may be comin from the faulty VSV or canister, but I don't know if any of those electrical possibilities are effecting it aswell
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#4 (permalink) Old 02-27-2012, 07:45 PM
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Quote:
Originally Posted by Smaay View Post
there are 2 VSVs in the EVAP system. the first one has 2 nipples right next to each other. the first hose comes off the intake manifold and the other runs along the battery to a hard line at the firewall. the second VSV is located down by the fuse box. it has 2 nipples on it at 90 degrees to each other. one is connected to a hard line next to the frame and the other connects to your intake box


I did just install a CAI, could I have moved or disconnected something that would have started al this
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