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H
2006 Navigator
OK I am fairly certain there are no massive leaks. I bypassed the evap control valve and can draw the tank into a vacuum. I pulled the vacuum line off while it was in a vacuum and plugged and 5 minutes later it was still in a negative. FYI I plugged the vent valve as it is open. During this...- howardhhjr
- Post #9
- Forum: 2nd Gen - 2003 - 2006
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H
2006 Navigator
I just read a article here https://www.motor.com/magazine-summary/fords-evap-system-operation-testing/ About how the system operates. I need to find where the system measures the fuel tank pressure. If the system can validate the sensor & solinoid don't function. It will throw code and...- howardhhjr
- Post #8
- Forum: 2nd Gen - 2003 - 2006
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H
2006 Navigator
I'm making the Assumption being that the fuel tank pressure is at 9 in h2o that the vent is always open and the vapor solenoid to the vacuum is always closed. First thing I need to do is resolve the high fuel tank pressure. Then I can look for leaks. For sure 100% the tank vent stays open. I'm...- howardhhjr
- Post #7
- Forum: 2nd Gen - 2003 - 2006
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H
2006 Navigator
I appreciate the reply. I have owned this navigator since 2017. It has always given me issues filling. The charcoal canister is most likely toast. I would have changed it but it is obsolete. I actually bought active charcoal and am going to try to rebuild it. With the fuel pressure reading 9...- howardhhjr
- Post #4
- Forum: 2nd Gen - 2003 - 2006
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H
2006 Navigator
Looking at the fuel rail, I wonder if it is combined, as there is another line connected coming from the tank. I was thinking it was a return line, bot there is no clamp on it so I dont think they would have a hp fuel pressure sensor with a return.- howardhhjr
- Post #2
- Forum: 2nd Gen - 2003 - 2006
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H
2006 Navigator
Good afternoon. I have a 2006 Lincoln Navigator and have a hard time filling the tank and P0455. Thought it was the tank vent solenoid, that wasn't it. the purge valve works. When I look at the tank fuel pressure it is .3 psi or 9" H2o. This has not moved. I make the assumption that the sensor...- howardhhjr
- Thread
- Replies: 8
- Forum: 2nd Gen - 2003 - 2006
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