Po440 on my 2000 f150 flare side mean

P0440 - is a large EVAP leak. The EVAP system stores fuel vapor from the fuel tank and then delivers it into the engine under certain condition. The EVAP system basically consists of a purge solenoid, vent solenoid, charcoal canister, fuel tank and a fuel tank pressure sensor.

There are two common causes for this code. One is the fuel cap, make sure it is tight. Also check the filler knock where the gas caps seals to see if there is an excessive amount of rust build up which can also cause this code.

The other is the vent solenoid. If it sticks open the system will not be able to go into a vacuum mode. The vent solenoid is usually tucked up in the quarter panel on the drivers side right behind the tire.

A scan can tool is usually needed to monitor data and activate solenoids.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

The P0440 code means that the control module has detected a leak in the Evaporative Emission (EVAP). Loose fuel tank filler cap is the most common cause that triggers the P0440 code.
Read more: http://engine-codes.com/p0440_chevrolet.html#ixzz3Jq4J1Kp1

IF FLARE NUT WILL NOT TURN FREELY ON METAL PART OF LINE YOU HAVE A BAD PART RETURN AND CK NEW ONE

Is it your line 1/4"

the p0440 and p1126? if so, the p0440 means Evaporative Emission Control System, and the P1126 means Throttle Position (Narrow Range) Sensor Circuit Malfunction.
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VAS 5054A With OKI Chip

The technical meaning of the code is Evaporative Emission Control System Malfunction.

P0440 EVAP System No Flow can occur during the following conditions:
Fuel filler cap might be loose

• Leak in the fuel tank, fuel filler neck or fuelsending unit 'O' ring.
• PCM might have failed.
• Purge vapor line might have clogged.
• Purge or vent solenoid power circuit is open .
• Fuel tank pressure sensor is damaged, disconnected or it failed.
• Charcoal canister is filled with fuel or moisture.

Your not going to find one. Brake lines need to be made you can't buy prebent lines.The main lines runs down the drivers side of the vehicle to feed the rear barkes along the frame with the fuel lines and the parking brake cable. Thats the one that rusts out. You can buy line cheap but it has to be the same size and you just stratien it out. You will need a tubeing cutter a flareing tool and some brake fittings. You can also buy stright sections with the flare and fittings pre made but olny 4 feet long. This is the easyest way remove the rear fitting at the junction in the rear run the premade peice toward the front and cut the line at an easy spot to make the new flare so all you need to make is one flare and one new coupleing just make sure you put the new coupleing on before you do the flare then thread it all together and it will work for another 15 years good luck Inow this may sound complex but its not and if you can do this it will save you hunderds of dollars

p0440 is general evap failure it is commonly a vent solenoid that is located at the rear of the gas tank on the right side above the rear axle.

I had a 94 with the same problem. On the inside of the tail gate, you'll see a long, narrow cover, it should have several bolts, probably torx type. Remove that cover and you'll have access to the latch where you can unlatch with a pair of pliers or something.. Good luck.

Brake fluid is highly corrosive. If you can't get the line loose on the frame side then I would suggest replacing the hard line as well coming from the master cylinder. Or if you have a flaring tool you could cut the hard line just behind the rubber and put a new fitting on it. Pretty easy if you have the tool. Essentially you will wind up kinking or breaking the hard line anyway if the fitting won't come loose easy.