![]() I am still not sure what type of screw it is - looked like a small Robertson. I was able to reach it with a long screw driver but it was so badly rusted that nothing was doing. I saw the screw that you are talking about on the back of the valve. Only downside was the dirt raining down on my face. so I was able to slide under without lifting it up and placing the car on jack stands. Here's a re-count of my experience trying to remove the vapor pressure valve. OttawaD wrote:Thanks for getting back to me. This procedure really solved my P0446 problem. The Vibe is positive to pass inspection proven by the scanner. After driving more than 2K miles and after many fuel tanks later, the check engine light is still off. Take pictures before removing any hoses if necessary. So be careful when removing those hoses from the canister. You can not confuse them either (You may trigger other codes as well). Even with the valve, there is an inlet and outlet hose. There are many hoses at the canister and you would not want to confuse them not to get other related CEL codes. So you actually do not need to remove the entire canister to remove the valve. There is only one screw holding the valve to the canister. Hello there! I am glad to have helped you. Last thing I need is to damage a line and create further headaches. canister beforehand? Before I start just pulling on the lines that attach to the valve, I wanted to check. I just have a few quick questions I was hoping you (or anyone else) could help me with: is there any technique to getting the vapor pressure value off? Did you have to remove the evap. Your posts have been incredibly helpful to this point, so I thank you for them. Right now I am experiencing the same problem (CEL P0446) with my Vibe, which needs to be emissions tested in 2 weeks time. Which AC Delco fuel cap would fit my 2003 Vibe? I also noticed that there come different fuel tank caps for AWD and FWD, do they? Would the ACDelco for 2003 Trix fuel cap fit my 2003 Vibe with the correct standards not to CEL? I found that the ACDelco GT287 one is meant for 2006-2010 Vibe and the ACDelco GT273 is meant for 2005 Vibe. It makes a lot of sense to try to change the fuel cap before anything. Now that you mentioned it, when I tie up the fuel tank cap, the CEL takes longer to show up or not even show until the next fuel fill. I noticed that both of them pointed to the fuel tank cap. I saw /phpBB3/viewtopic.php?f=12&t=41115 so at the end of the month I'll try a long drive with the OEM cap from my son's trix, just to be sure and fully eliminate the cap as a factor. I need to give a more earnest attempt to check out the VSV tinman999 mentioned in that other thread I looked at the canister in a half hearted manner, wasn't obvious how to solve the hose/electrical connectors so I gave up. I bought a replacement gas cap, but that didn't solve the problem. I've been throwing a P0446 for a while now. Joatmon wrote:also see /phpBB3/viewtopic.php?f=28&t=23940 However, I wanted to see if there is anything in particular that I have to look for based on your experience. I understand that this code refers to the vapor canister. I also double checked the gas tank cap and it seems tied. I checked the hoses around the engine to see if there were any leaks but I found nothing. The P0446 code shows up most of the times when I first start up my Vibe in the morning to go to work. After the fuel gauge finally drops a little, the P0446 code tends to trigger. I also noticed that my fuel gauge stays on full for longer than expected even when driving many miles. Sometimes the P0446 code takes a week or two to show up and even longer. I have a code reader and I have erased the code a couple times. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.My 2003 Vibe AWD has two CEL codes which are P0446 (Evaporative Emission Control System Vent Control Circuit Malfunction) + P0446P (Yes the same code with a P at the end :-s ). If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it.
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