996 EVAP Canister

[goldenwarrior1]

Its CEL Gremlin week! Anyone know where following components are located on a 02 996 C4S? Popped the CEL P0447 this week and it comes back everytime I start the car. Searched site for all info and Gas cap seal looks good although I may replace it as a cheap elimination factor...

1. EVAP Canister

2. EVAP Solenoid (Shut off Valve)

[Loren]

All the pics you should need are here.

This was a fuel door solenoid replacement - but the EVAP canister has to come out to do that. And, you can see the valve in the pics.

(Thanks to Chuck Jones for taking the pics for me).

[goldenwarrior1]

All the pics you should need are here.

This was a fuel door solenoid replacement - but the EVAP canister has to come out to do that. And, you can see the valve in the pics.

(Thanks to Chuck Jones for taking the pics for me).

Loren,

Thanks for the fast response. Lots of detail. I will take pictures and post the results if this fixes the problem. I had that whole inner shield out last weekend and I bet I must have knocked something loose...

As always, thanks for your huge contributions!

R/Tom

[mtimmy]

I had that code before. turns out to be the solenoid that is on top of the engine that get stuck to always on causing the tank to purge all the time.

All the pics you should need are here.

This was a fuel door solenoid replacement - but the EVAP canister has to come out to do that. And, you can see the valve in the pics.

(Thanks to Chuck Jones for taking the pics for me).

Loren,

Thanks for the fast response. Lots of detail. I will take pictures and post the results if this fixes the problem. I had that whole inner shield out last weekend and I bet I must have knocked something loose...

As always, thanks for your huge contributions!

R/Tom

[goldenwarrior1]

I had that code before. turns out to be the solenoid that is on top of the engine that get stuck to always on causing the tank to purge all the time.

All the pics you should need are here.

This was a fuel door solenoid replacement - but the EVAP canister has to come out to do that. And, you can see the valve in the pics.

(Thanks to Chuck Jones for taking the pics for me).

Loren,

Thanks for the fast response. Lots of detail. I will take pictures and post the results if this fixes the problem. I had that whole inner shield out last weekend and I bet I must have knocked something loose...

As always, thanks for your huge contributions!

R/Tom

The solenoid on top of the engine is the EVAP purge valve. If you disconnect it or if it fails it pops a P0441 code on my durametric software. I found the cannister purge valve in the right wheel well to be bad. I have it on order and should have it replaced in the next week or so. Will post some pics of the install if it cures the problem.

[dwaynemosley]

All the pics you should need are here.

This was a fuel door solenoid replacement - but the EVAP canister has to come out to do that. And, you can see the valve in the pics.

(Thanks to Chuck Jones for taking the pics for me).

Referencing the valve mentioned in the first post as "2. EVAP Solenoid (Shut off Valve)", and the one Loren pointed out in the DIY, is this the valve that doesn't open when there is difficulty putting fuel in the car? My car wouldn't accept fuel a few days ago. It splashed back and out as described in some of the other messages here. Standing there I remembered some of the posts about this problem, so I took my palm and pounded on the top of the fender. I heard a creaking/popping noise for about 3 seconds and then I was able to pump fuel into the car. Is this the other solenoid that Loren was referring to in the DIY about the flap solenoid? If so, is there any way to lube it or repair this "sticking" problem without changing the solenoid, or is exchange the solution? Are any special tools or precautions required for this effort?

Any input anyone can provide on the solution is very welcome. A part number would help a lot if that's available. The car is a 2003 Targa.

[Loren]

All the pics you should need are here.

This was a fuel door solenoid replacement - but the EVAP canister has to come out to do that. And, you can see the valve in the pics.

(Thanks to Chuck Jones for taking the pics for me).

Referencing the valve mentioned in the first post as "2. EVAP Solenoid (Shut off Valve)", and the one Loren pointed out in the DIY, is this the valve that doesn't open when there is difficulty putting fuel in the car? My car wouldn't accept fuel a few days ago. It splashed back and out as described in some of the other messages here. Standing there I remembered some of the posts about this problem, so I took my palm and pounded on the top of the fender. I heard a creaking/popping noise for about 3 seconds and then I was able to pump fuel into the car. Is this the other solenoid that Loren was referring to in the DIY about the flap solenoid? If so, is there any way to lube it or repair this "sticking" problem without changing the solenoid, or is exchange the solution? Are any special tools or precautions required for this effort?

Any input anyone can provide on the solution is very welcome. A part number would help a lot if that's available. The car is a 2003 Targa.

The valve that is in question item and is at the top center of the photo.

[tac27]

I'm a bit confused between Dwayne and Loren's comments....are there two valves? One above the EVAP cannister (as shown in Loren's picture) and one on top of the engine.

I'm getting the "p0444 tank vent" error code; I just had an indie replace the AOS. Since he was 'fiddlin' around in the engine compartment, Dwayne's comment makes sense if there is a valve 'on top of the engine' too.

If that is the case, where would I find it?

Tim

Las Vegas

Edited September 21, 2009 by tac27

[tac27]

I looked up the code, P0444 and it reads "EVAP Canister purge vavle."

I found this diagram above posted by Loren in another thread; figure one is the EVAP Canister Purge valve. As it trails away from the fuel tank and filling neck, I'm assuming figure one must be near the engine (it is illustrated toward the lower right in the diagram).

This makes sense then that is the error code; I'm thinking the indy mechanic who just replaced my AOS may have bungled something or forgot to reattach something (specifically, whatever figure one attaches to...)

Edited September 21, 2009 by tac27

[Loren]

I looked up the code, P0444 and it reads "EVAP Canister purge vavle."

I found this diagram above posted by Loren in another thread; figure one is the EVAP Canister Purge valve. As it trails away from the fuel tank and filling neck, I'm assuming figure one must be near the engine (it is illustrated toward the lower right in the diagram).

This makes sense then that is the error code; I'm thinking the indy mechanic who just replaced my AOS may have bungled something or forgot to reattach something (specifically, whatever figure one attaches to...)

You have to read through the other posts - there was a second question about the valve on the filler pipe.

The EVAP Canister Purge valve is as shown in your diagram - it is on the engine.

[tac27]

Ah, after reading, and then rereading, I finally caught the sutble difference.

There are two purge valves; one is the 'EVAP canister purge valve' located in the engine compartment (Figure 1 in the diagram) and the other is the 'operating purge valve,' which is located behind the right fender (Figure 7 in the diagram). It is also a bit confusing that the Evap canister purge valve isn't located next to the EVAP canister, but at the opposite end of the car, on top of the engine.

One of the ealier post uses the generic term 'purge valve' to describe both parts at the different locations.

So...I just took a look in the engine bay and there are a lot of hoses. Anyone have a photo showing which one is the EVAP canister purge valve?

I'm thinking it is located, or runs, behind the air intake 'snorkel; is that a correct guess?

Tim

Edited September 21, 2009 by tac27

[tac27]

Okay, found this picture someone had posted about another issue, but I think it has what I think is the EVAP canister purge valve.

I've circled it in red with an 'arrow.' Not the best art work.......

Thanks,

Tim.

(later edit)

Hey, Hey! found it...

Edited September 21, 2009 by tac27

[tac27]

Update....

I found an electrical connection that has a plug behind that valve; the other half was tucked neatly behind the throttle body. I happened to find it as I was running my fingers along all that tubing and wiring, from the left side of the engine toward the throttle body; surprise! something not plugged back in. Explains the P10444 code 'open circuit.'

Will the CEL eventually turn off, or do I need to take it to someone who can clear the code from the DME?

Tim.

[Hurdigurdiman]

what happens if you clear the code by disconnecting the battery for 15 mins or so. Does that permanently delete the code or will the code pop up again. Does all  codes have to be deleted by a durametric type device? My small durametric will not allow me to clear codes. I have a cheap generic one. So to remove the CEL I use the battery method. After another 30 miles, up the samwe code comes again. I ask myself" Did I actually cure the fault and is that the old code popping up the CEL from memory. Can anyone answer me that question thanks.

[JFP in PA]

Disconnecting the battery will not clear all types of codes or MIL's, there are several that have to be manually cleared with an appropriate diagnostic tool.  Many fault producing codes that can be cleared by disconnecting the battery will promptly return because the fault is still there and needs to be corrected before the MIL will not return.

[Hurdigurdiman]

that's good to know JFP in PA. Thanks so much. I have an indi who will clear my po466 with his tool lol.  I have done lots of testing and the likes. Not found any vac leaks but still working on them with a hand held vac pump.