Must be an epidemic...... Same thing happened to me, 1 wire to EVAP solenoid completely split, the other 1/2 way there. Cut/crimped/spliced/wrapped and 150 miles later no light. Thanks lgeiger13

 

pleiger and another person THANK YOU!!

the p1451 code on my expedition was exactly what and where you said it would be, frayed wire by the canister, I belie you saved me a couple hiundred dollars!!

 

On my 2003 F150 I had a P0457. I got rid of that with a new gas cap. I still have a P1451 so I need to check the CVS for continuity. How many Ohms should it read and whats the best way to test that? My CVS is under the hood, bolted to the fire wall, very easy to get at. I've check the hoses front to back, no problems.

 

The more I read, the more confused I become, is the solenoid under the hood or back by the fuel tank?

 

The CVS is mounted on the charcoal canister above the spare tire. You're confusing it with the VMV (Vapor Management Valve) on the firewall.

 

Thank you! Now I just have to figure out how to get it down from there and check it. Thanks again

 

Where can I buy a canister vent solenoid? Looking online, all I find are the Vapor Solenoids on the firewall.

 

Gee, most people would check their dealer's parts department...

 

you could remove the cansters as one and check for cracks around the edge it should four bolts them just slide it out you will see once you get it i think it goes forwod and then down

 

Being that I'm not a mechanic, and this is all new to me, I take it you meant to say "It's a dealer item only".

 

Finally got it! Traced all the wiring from front to back, checked all the fuses, tested the Vapor Solenoid, and checked for kinks or blockage in the hoses. When I got the Canister Vent Solenoid off, it look pretty bad. Tested it and found it was bad, replaced it and now the check engine light has been off for a week. Also, got it to pass echeck .Thanks to all you guys for your help!!!!

RL

 

I just got a 98 f150 an my check engine light is on and advanced auto parts checked it and p1451 code came anyone know what that is an how much to fix it an where it's located on the truck

 

Geez... did you read any of this thread other than the heading before posting your question? Try looking at post #1, #2, #3, #13 through 19, specifically #20, #23, and #26 (right before yours!). You will have your answer.

 

I'm new to IL6. What does the charcoal canister do? Does it need periodic replacement?

 

@Drfeelgood95

Charcoal possesses the unique ability to absorb large quantities of hydrocarbon vapors, the stuff we smell when fuling our tank. And it can give up (release) those vapors into fresh air efficiently for many cycles without needing to be replaced.

The evaporative emission (EVAP) control system limits fuel vapors from escaping into the atmosphere. Fuel tank vapors are allowed to move from the fuel tank, due to heat expansion / pressure in the tank, through the vapor pipe, into the EVAP canister. The carbon in the canister absorbs and stores the fuel vapors. Excess pressure is vented through the vent line and EVAP vent solenoid to the atmosphere. The EVAP canister stores the fuel vapors until the engine is able to use them. At an appropriate time, the PCM will command the EVAP purge valve open, allowing engine vacuum to be applied to the EVAP canister. With the EVAP vent valve open, and fresh air is drawn through the valve and vent line to the EVAP canister. Fresh air is drawn through the canister, pulling fuel vapors from the carbon. The air/fuel vapor mixture continues through the EVAP purge pipe and EVAP purge valve into the intake manifold to be consumed during normal combustion. The EVAP system requires the PCM be able to detect a leak as small as 0.040 inch in the EVAP system. The PCM uses several tests to determine if the EVAP system is leaking.


Even if raw gasoline gets into the canister due to overfilling your tank, the system will evaporate it over time and draw it, in vapor form, back through the intake manifold.