P0455 suddenly?
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More Turbo
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P0455 suddenly?
Last two times using the truck (2008 3v V10) it's been stumbling/stuttering a bit. Pulled the codes, got a P0455 Evap Exhaust code. I know this is commonly related to the gas cap, but I hadn't gotten gas since long before this started. As a precaution I added about 10 gallons and screwed the cap back on as well as possible. Still seems to be stumbling.
Have read some info on other vehicles, Fords included, but nothing V10 specific. Anything unique I should know about before pressing forward?
One thread I read about reported that wasps can cause issues with a CANV, which wasps are a large problem in my area. Anyone know if this is true?
Have read some info on other vehicles, Fords included, but nothing V10 specific. Anything unique I should know about before pressing forward?
One thread I read about reported that wasps can cause issues with a CANV, which wasps are a large problem in my area. Anyone know if this is true?
Hotshot
Joined: Jan 2004
Posts: 19,760
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From: St Louis
The conditions that cause a P0455 Evap code probably won't cause the engine issues, treat them separately. Just to make sure, take the gas cap off and run the truck while the engine issue is apparent to see if the engine issue continues or not (ignore any P0455 or gas cap error lights during this period).
The engine issue could be anything from bad gas to a misfire to a restricted vent in the fuel tank. To check for that last one and assuming the fuel cap is properly installed, run the truck until the symptom shows up, then go back and remove the gas cap while listening for any inrush of air as the seal is broken. If the tank isn't venting air into it to replace the volume of fuel used, eventually the engine starves for fuel.
The engine issue could be anything from bad gas to a misfire to a restricted vent in the fuel tank. To check for that last one and assuming the fuel cap is properly installed, run the truck until the symptom shows up, then go back and remove the gas cap while listening for any inrush of air as the seal is broken. If the tank isn't venting air into it to replace the volume of fuel used, eventually the engine starves for fuel.
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More Turbo
Joined: Dec 2017
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The conditions that cause a P0455 Evap code probably won't cause the engine issues, treat them separately. Just to make sure, take the gas cap off and run the truck while the engine issue is apparent to see if the engine issue continues or not (ignore any P0455 or gas cap error lights during this period).
The engine issue could be anything from bad gas to a misfire to a restricted vent in the fuel tank. To check for that last one and assuming the fuel cap is properly installed, run the truck until the symptom shows up, then go back and remove the gas cap while listening for any inrush of air as the seal is broken. If the tank isn't venting air into it to replace the volume of fuel used, eventually the engine starves for fuel.
The engine issue could be anything from bad gas to a misfire to a restricted vent in the fuel tank. To check for that last one and assuming the fuel cap is properly installed, run the truck until the symptom shows up, then go back and remove the gas cap while listening for any inrush of air as the seal is broken. If the tank isn't venting air into it to replace the volume of fuel used, eventually the engine starves for fuel.
I'll try out the cap method. Hopefully wherever this inlet is, it's not hard to get at.
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Joined: Jul 2002
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From: Long Island USA
Sounds like your issue is a big ole vacuum leak that might be causing your engine to stumble
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https://www.ford-trucks.com/forums/9...t-gas-cap.html
Sounds like your issue is a big ole vacuum leak that might be causing your engine to stumble
Sounds like your issue is a big ole vacuum leak that might be causing your engine to stumble
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