I have a 1997 nissan pathfinder and had it trouble shoot. The computer read kout was P1447, which means that the EVAP perge flow monitor. i would like to know where to locate this on the vehicle so i could replace it or repair it. Mine is a 4wd with the spare on the back of the vehicle

ZJ Limited

• 17989 Answers
• Posted on Jan 14, 2011

SOURCE: I have a code P1447

P1447 - Evaporative Emission (EVAP) Control System, Purge Flow Monitor
In this evaporative emission (EVAP) control system, purge flow occurs during non-closed throttle conditions. Purge volume is related to air intake volume. Under normal purge conditions (non-closed throttle), the EVAP canister purge volume control solenoid valve is open to admit purge flow. Purge flow exposes the EVAP control system pressure sensor to intake manifold vacuum.

Under normal conditions (non-closed throttle), sensor output voltage indicates if pressure drop and purge flow are adequate. If not, a fault is determined. Malfunction is detected when EVAP control system does not operate properly, EVAP control system has a leak between intake manifold and EVAP control system pressure sensor.

Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)

Possible causes
* EVAP canister purge volume control solenoid valve stuck closed
* EVAP control system pressure sensor and the circuit
* Loose, disconnected or improper connection of rubber tube
* Blocked rubber tube
* Cracked EVAP canister
* EVAP canister purge volume control solenoid valve circuit
* Closed throttle position switch
* Blocked purge port
* Closed throttle position switch


Test is and send us your updated.

SOURCE: I have a code P1447

My experience with my own 97 Pathfinder was that the EVAP canister internally ruptured, spreading charcoal pellets throughout connected portions of the vacuum system.

The tech replaced the EVAP canister and blew lines out with compressed air, but the P1447 code came back.

A few weeks later I had the tech check why the P1447 code came back, and he determined that the EVAP Canister Purge Volume Control Solenoid Valve had failed, as it did not pass certain resistance measurement tests. He replaced the valve, $288 + labor, blew a few remaining carbon bits out, and the problem seems to be fixed.

I kind of choked at the $288 price though, and took the part home. Two screws to pop it open. Turns out it was filled (surprise) with pulverized charcoal dust and would not operate.

The valve is a little rotating magnet that turns and screws a lipstick-style plunger up and down. I tapped out all the carbon and then started turning the bearings, which were crunchy sounding. However, the carbon eventually gave way to the bearings and they're spinning just fine now. I haven't tested the part, but from the simplicity of it, I have no doubt it would get me down the road many more miles.

SOURCE: HOW DO YOU DISENGAGE 4WD 1997 PATHFINDER

Hi Diamond, These vehicles do sometimes have a problem in disengaging the 4 X 4. Start up and drive it backwards and forwards slowly (3 or 4 miles per hour will do). Gently put pressure on the lever in the direction of the 2 high and after some time it will change. (If nothing has been damaged inside the box, which is unlikely) Regards John