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I Can't Fill the Tank! V70-XC70 1999

posted by  BCoote on  Wed Dec 6 10:28 CST 2006
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Yep on the error codes - p0422, p0446, and p0453 read. Two had to do with evap system and pressure - the other was a cat conv thing.

I read about a Canister Purge valve and evap canister shutoff valve in my manual, and how they can affect the cat conv diagnostic as well as other evap functions, but I don't get it. Before reading the codes, I could only put 3/4 gal in before the pump stopped, so I drove to another station and tried their pump. Again, 3/4 gal was all it would accept. Next, I get a code reader and clear the codes, drove 5 miles, and tried again. This time, 11 gallons, no problem. Is there a blockoff or shutoff for the fuel filler?

The mystery continues... recap:

1. Check engine light came on (couldn't find my code reader).
2. Filled tank, light went off after 2 trips around town.
3. at 6 gal remaining, light came on again.
4. Noticed fuel gauge varying between 2 and 6 gal intermittently.
5. Tried to refuel, unable as above.
6. Noticed exaggerated vacuum sound when cap removed, and fuel tank sucked up off of straps when I looked underneath (less after opening gas cap).
7. Read and cleared codes.
8. Drove and refueled; normal except I expected it to take a few gallons more to top off...

Is it the canister purge valve? Where is it? How can I test it? Sorry for being longwinded, and I really appreciate your help.






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