I did some research online, and I found a case similar to yours, I give credit to RegalRanger for this one. I hope this benefits
Less than two months ago, I purchased a used 1997 Ford Ranger XLT, Regular Cab (2.3 L I-4, 5 spd.). Shortly after the purchase, the check engine light came. I had the code read at a local auto parts store, and the code P1443 was returned. The description for the code was "Evaporative Emission Control System Control Valve". Initially, I didn't do anything to fix the problem. The light ended up clearing itself a couple of days after it first came on. However, the light only stayed off for a few driving cycles before it came back on (and stayed on). I had the code read again, and again I got the P1443 code.
I did some research on the web and found that the problem could be the Canister Purge Assembly. This assembly connects the intake manifold to the charcoal canister and the assembly is made up of hoses, a valve and a sensor. On my 1997 Ranger, it is located near the front of the engine compartment on the driver's side (the canister is right behind the driver's side headlight). Apparently, if there are any cracks in the hoses, or if the valve or the sensor wears out, this will cause the check engine light to come on, and return the P1443 code. After looking around on the web for a couple of days, I was lucky enough to find a few part numbers for the canister purge solenoid/flow sensor assemblies:
F57Z-9C987-AB Canister Purge Solenoid/Flow Sensor
Assembly - 2.3L
F57Z-9C987-CA Canister Purge Solenoid/Flow Sensor
Assembly - 3.0L
F57Z-9C87-BA Canister Purge Solenoid/Flow Sensor
Assembly - 4.0L
After trying to get the part at a few different auto parts stores, I made a trip to the dealer to order the part. It ended up costing about $65 (although, I have heard it can cost $80 - $100 depending on the exact part number that you need). It only took 5 or 10 minutes to install the part, and it was fairly simple. Initially, I started the truck and the check engine light was still on. However, the light cleared itself after a few driving cycles and it has stayed off ever since (it has been about 5 weeks and 1500 miles).
Hopefully this helps someone who had the same problems that I did. From my experience, and from what I have found in my research, if you get the P1443 code on a late 90's Ranger, this is the way to fix it. Hopefully you will be able to use the part numbers above to order your parts (I am not sure where on the web I originally got the part numbers from, but I did use them to order the part that I needed). I believe this is a part that you can only get at a dealer, so you may not even want to waste time trying to order it from the auto parts stores. I would rate this as a fairly easy thing to replace as long as you have some knowledge about working on cars and trucks. However, if you don't feel comfortable doing it yourself, you may want to ask for help from a friend who is knowledgeable before you spend the money to have someone else do it.
Follow the troubleshooting tree that is associated with that code.
depends on the year. copy and paste the code to see. http://www.racepages.com/parts/radiator/mercury/tracer.html
Code P1443 is idle air Control (IAC) valve Speed fault
NEED COLOR CODE FOR RADIO SPEAKER WIRE 93 MERCURY
P1443 EVAP System - Tank Cap Missing Mostly it may be damaged. usually appears with code P0455
you have a fault code on emission systems
P1443 Evaporative Emission Control System - Vacuum System - Purge Control Solenoid or Purge Control Valve fault Loose or defective gas cap will cause this code.
The code P1443 for the 1996 Ranger means that there is a problem with the EVAP Pressure Sensor. The real culprit might be the Vapor Canister Purge Valve since the EVAP Pressure Sensor rarely fails. The VCP Valve is around $60. Before purchasing this part, check all hoses around it for leaks.
The p1443 code means a problem with the evaporative emissions system. There could be a problem with a broken or unhooked vacuum hose. Also could be a problem with the solenoid or sensor between throttle body and evaporative canister.
Trouble code P1507 means: Idle air control (IAC) underspeed error
P1443 code evap emissions control malfuction no voltage at solenoid.
Trouble code P0118 means: Engine Coolant Temperature Circuit High Input Trouble code P1443 means: Evaporative Emission System Control Valve (low/no flow) Trouble code P0301 means: Cylinder 1 Misfire Detected Trouble code P0306 means: Cylinder Number 6 Misfire Detected