What is the real problem with P1443 code on a ford ranger?

Answer 1

As others have stated p1443 code can be caused by purge valve solenoid, purge valve sensor, vacuum hose cracked,or at the other end ,the gas tank vascuum hose connection. The thing everyone is not telling you is WHY the purge valve fails. Here is the REAL reason :

as the vehicle is shut down the pv solenoid engergizes plugging the vacuum line.This then stores the gas fumes in the evac cannister. When you turn on the key and start the ranger the solenoid opens the vac tube up and allows stored gas fumes to be sucked into the throttle body to be burned up.So if the pv solenoid never engerizes or de-energizes yoiu get the P1443 code.Now for the fun part :the pv solenoid never really fails ,some electrically do, but most of them just get 2 or 3 grains of carbon from the evac canister which then sticks in the solenoid port.The easy fix is replace the pv solenoid. But what if in a period of 2 weeks you put in 4 pv solenoids and the problem keeps coming back ?

What we are now doing is puting a clear in line filter between the cv canister and the pv solenoid to trap the black carbon grit. This works wonderful.Especially on older rangers say with high mileage. My suspicions are the ev canister that contains carbon is breaking down and being sucked out into the pv solenoid.You obviously can replace the evac canister but check the cost.Anytway i thought someone who is pulling there hair out with this problem deserves a true answer.